Imaging device

Abstract

To provide an imaging device that can facilitate image capture within a range of focal lengths desired by a user.SOLUTION: An imaging device includes a main body to which an optical system can be detachably attached, an imaging unit that captures a subject image via the optical system and generates image data, an input unit that acquires a zoom amount indicating the degree of a user's zoom operation related to the optical system, and a control unit that changes the magnification of an image cut out from the image data so as to realize a hybrid zoom operation in which a first focal length of the optical system is changed to a second focal length corresponding to the angle of view of the subject image in the image data according to the zoom amount from the input unit. The control unit maintains the characteristic of the second focal length with respect to the zoom amount before and after the change of the optical system.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to an imaging device having an electronic zoom function. [Background technology]

[0002] Patent document 1 discloses that in a trimming camera system, the trimming magnification of the electronic zoom and the shooting magnification of the optical zoom are determined in the same way whether the electronic zoom operation member of the camera body is operated or the optical zoom operation member of the zoom lens is operated. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 4-284433 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides an imaging device that can facilitate image capture within a focal length range that is desired by a user. [Means for solving the problem]

[0005] An imaging device according to one aspect of the present disclosure includes: A main body to which an optical system can be detached; an imaging unit that captures an object image via an optical system and generates image data; an input unit for acquiring a zoom amount indicating a degree of a user's zoom operation on the optical system; a control unit that changes the magnification of an image cut out from the image data so as to realize a hybrid zoom operation in which a first focal length of the optical system is changed to a second focal length corresponding to an angle of view of a subject image in the image data in accordance with a zoom amount from an input unit; The control unit maintains the characteristic of the second focal length with respect to the zoom amount before and after the change of the optical system.

[0006] An imaging device according to one aspect of the present disclosure includes: A main body to which an optical system can be detached; an imaging unit that captures an object image via an optical system and generates image data; an input unit for acquiring a zoom amount indicating a degree of a user's zoom operation on the optical system; a control unit that changes the magnification of an image cut out from the image data so as to realize a hybrid zoom operation in which a first focal length of the optical system is changed to a second focal length corresponding to an angle of view of a subject image in the image data in accordance with a zoom amount from an input unit; an operation unit that receives a user operation for setting a characteristic of the second focal length, In the hybrid zoom operation, the control unit changes the second focal length in accordance with the zoom amount based on the characteristics of the second focal length. Effect of the Invention

[0007] The imaging device according to the present disclosure can facilitate image capture within a focal length range that is desirable for the user. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a block diagram showing a configuration of a digital camera according to an embodiment of the present disclosure. [Diagram 2] 1 is a flowchart illustrating a zoom operation in a digital camera; [Diagram 3] Example of a settings menu on a digital camera [Figure 4] Example of focal length information displayed on a digital camera [Diagram 5] 3 is a flowchart illustrating the profile setting process of FIG. 2. [Figure 6] An example of a profile setting screen on a digital camera [Figure 7] A flowchart illustrating the important zoom end selection mode of FIG. 5. [Figure 8]An example of a screen for selecting the zoom limit of importance on a digital camera [Figure 9] FIG. 1 is a diagram illustrating a linear profile set in a digital camera; [Figure 10] FIG. 13 is a diagram illustrating an example of a W-end emphasis profile set in a digital camera; [Figure 11] FIG. 13 is a diagram illustrating an example of a T-edge emphasis profile set in a digital camera; [Figure 12] FIG. 13 is a diagram illustrating an example of a profile that emphasizes both ends and is set in a digital camera; [Figure 13] An example of the threshold setting screen for the Wide-end profile [Figure 14] An example of the threshold setting screen for the T-edge weighted profile [Figure 15] An example of the threshold setting screen for both-end weighted profile [Figure 16] FIG. 1 is a diagram for explaining substantial maintenance of a linear profile before and after changing an interchangeable lens. [Figure 17] A diagram to explain the substantial maintenance of the wide-edge weighted profile before and after changing interchangeable lenses [Figure 18] A diagram to explain the substantial maintenance of the T-edge weighted profile before and after changing the interchangeable lens. [Figure 19] A diagram for explaining the substantial maintenance of a profile with emphasis on both ends before and after changing interchangeable lenses. [Figure 20] FIG. 1 is a diagram for explaining a complement mode in a digital camera; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the embodiments will be described with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. Note that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0010] 1. Configuration 1 is a block diagram showing the configuration of a digital camera 1 according to an embodiment of the present disclosure. The digital camera 1 of this embodiment is composed of a camera body 100 and an interchangeable lens 200 that is detachable from the camera body 100.

[0011] 1-1.Camera body The camera body 100 includes an image sensor 110 , a display monitor 130 , an operation unit 150 , a camera control unit 140 , a RAM 141 , a flash memory 142 , a body mount 160 , and a card slot 170 .

[0012] The image sensor 110 is an element that captures an object image incident via the interchangeable lens 200 and generates an image signal. The image sensor 110 is, for example, a CCD, a CMOS image sensor, or an NMOS image sensor. The AD converter 111 digitizes the image signal generated by the image sensor 110 and outputs image data (also called imaging data). The image data output from the AD converter 111 is input to the camera control unit 140. The camera control unit 140 performs predetermined image processing on the image data. The predetermined image processing is, for example, gamma correction processing, white balance correction processing, scratch correction processing, YC conversion processing, electronic zoom processing, and JPEG compression processing. The image sensor 110 and the AD converter 111 are an example of an imaging unit of the present disclosure.

[0013] The image sensor 110 operates at a timing controlled by a timing generator 112. The image sensor 110 generates still or moving images for recording, or a live view image. The live view image is an example of a moving image displayed on the display monitor 130 to allow a user to visualize the real-time imaging results by the image sensor 110.

[0014] The display monitor 130 is an example of a display unit that displays images such as live view images and various information such as a menu screen on a display screen. The display monitor 130 can be configured with a display device such as a liquid crystal display device or an organic EL device. In addition to or instead of the display monitor 130, the digital camera 1 may be equipped with an electronic viewfinder (EVF) having a display screen as an example of another display unit in the camera body 100, for example.

[0015] Operation unit 150 is a general term for a user interface that can input operations (instructions) from the user. When operation unit 150 receives input of a user operation, it transmits an operation signal indicating various instructions corresponding to the user operation to camera control unit 140. Operation unit 150 includes, for example, physical buttons, levers, dials, touch panels, switches, etc. Operation unit 150 may also include virtual buttons, icons, etc. displayed on display monitor 130.

[0016] The camera control unit 140 controls the operation of the entire digital camera 1 by controlling components such as the image sensor 110 in response to instructions from the operation unit 150. The camera control unit 140 may be configured as a hardwired electronic circuit, or may be configured as a microcomputer that executes a program. The camera control unit 140 transmits a vertical synchronization signal to the timing generator 112. In parallel with this, the camera control unit 140 generates a synchronization signal synchronized with the vertical synchronization signal, and transmits this synchronization signal to the lens control unit 230 via the body mount 160 and the lens mount 250. The camera control unit 140 uses the RAM 141 as a working memory when performing operations such as control and image processing.

[0017] The flash memory 142 stores data such as programs and parameters used by the camera control unit 140 when performing control.

[0018] The body mount 160 can be mechanically and electrically connected to the lens mount 250 of the interchangeable lens 200. The body mount 160 can transmit and receive data to and from the interchangeable lens 200 via the lens mount 250. The body mount 160 transmits an exposure synchronization signal received from the camera control unit 140 to the lens control unit 230 via the lens mount 250.

[0019] In addition, the body mount 160 transmits other control signals received from the camera control unit 140 to the lens control unit 230 via the lens mount 250. In addition, the body mount 160 transmits signals received from the lens control unit 230 via the lens mount 250 to the camera control unit 140.

[0020] The card slot 170 is capable of receiving a memory card 171, and controls the memory card 171 under control of the camera control unit 140. The digital camera 1 is capable of storing image data in the memory card 171 and reading image data from the memory card 171.

[0021] 1-2.Interchangeable lenses 1, the interchangeable lens 200 is an example of an optical system including, for example, a focus lens 210, a zoom lens 220, and an aperture 260. Alternatively, the interchangeable lens 200 includes an optical system including, for example, a focus lens 210, a zoom lens 220, and an aperture 260.

[0022] The interchangeable lens 200 further includes a focus lens driver 211, a zoom lens driver 221, an aperture driver 261, a lens controller 230, a RAM 231, a flash memory 232, and a lens mount 250. The interchangeable lens 200 may further include a camera shake correction lens in addition to the lenses shown in FIG.

[0023] Moreover, the interchangeable lens 200 further includes operating members such as a focus ring 212 and a zoom ring 222. The operating members of the interchangeable lens 200 are not limited to these, and may include, for example, buttons provided on the exterior.

[0024] The lens control unit 230 controls the overall operation of the interchangeable lens 200. The lens control unit 230 may be configured as a hardwired electronic circuit, or may be configured as a microcomputer that executes a program.

[0025] The RAM 231 functions as a work memory used during control by the lens control unit 230. The flash memory 232 stores information such as programs, parameters, lens data, etc. used during control by the lens control unit 230.

[0026] The zoom lens 220 is a lens for changing the magnification of a subject image formed by the optical system. The zoom lens 220 may be configured with any number of lenses or groups. The zoom lens driving unit 221 is a mechanical mechanism that moves the zoom lens 220 along the optical axis of the optical system based on the user's operation of the zoom ring 222. The position of the zoom lens 220 is detected by the zoom lens position detection unit 223. The zoom lens position detection unit 223 transmits information indicating the detected position of the zoom lens 220 to the lens control unit 230.

[0027] The zoom ring 222 has a predetermined angle range (e.g., 90°) within which the optical focal length of the zoom lens 220 in the interchangeable lens 200 can be moved between the wide-angle end, at which it is the shortest, and the telephoto end, at which it is the longest. The zoom ring 222 is an example of an operating member that can perform a zoom operation by operating it to various rotation angles within that angle range.

[0028] The focus lens 210 is a lens for changing the focus state of a subject image that is incident from the optical system and formed on the image sensor 110. The focus lens 210 may be configured with any number of lenses or groups. The focus lens driving unit 211 drives the focus lens 210 to move forward and backward along the optical axis of the optical system under the control of the lens control unit 230. The focus lens driving unit 211 can be realized by, for example, a stepping motor, a DC motor, an ultrasonic motor, or the like.

[0029] The diaphragm 260 adjusts the amount of light incident on the image sensor 110. The diaphragm 260 is driven by an diaphragm driving unit 262, and the size of the opening is controlled. The diaphragm driving unit 262 includes a motor or an actuator.

[0030] 2. Operation 2-1. Overview The operation of the digital camera 1 configured as above will now be described.

[0031] In the digital camera 1 of this embodiment, the interchangeable lens 200 performs optical zooming by driving the zoom lens 220 to change the optical focal length in response to a user's operation of rotating the zoom ring 222 (an example of a zooming operation).

[0032] In response to the zoom operation described above, the digital camera 1 of this embodiment performs an operation in which electronic zoom (sometimes called "crop zoom") by cropping an image from the imaging data of the image sensor 110 is performed in conjunction with the optical zoom, i.e., a hybrid zoom operation. With this hybrid zoom operation, the range of effective focal lengths (so-called pseudo focal lengths) that take into account the effect of electronic zoom in conjunction with optical zoom in the image data of the shooting result can be expanded from the range of optical focal lengths of the interchangeable lens 200.

[0033] When performing hybrid zoom operation, the digital camera 1 of this embodiment maintains the focal length characteristics of the hybrid zoom operation relative to the zoom amount before and after changing the interchangeable lens 200. This enables the digital camera 1 to easily capture images within a focal length range that is desired by the user. The operation of the digital camera 1 of this embodiment will be described below.

[0034] 2-2. Overall operation 2 is a flowchart illustrating a zoom operation in the digital camera 1 of this embodiment. The process shown in this flow is executed, for example, by the camera control unit 140 of the digital camera 1. The digital camera 1 of this embodiment accepts a user operation on, for example, a setting menu at the operation unit 150, and performs zoom setting and zoom operation processing.

[0035] Fig. 3 shows an example of the display of a setting menu in the digital camera 1. In the example of Fig. 3, the display monitor 130 of the digital camera 1 displays menu items such as "hybrid zoom" in the setting menu.

[0036] In the example of FIG. 3, "hybrid zoom" in the setting menu accepts user operations via the operation unit 150 to turn on / off (enable / disable) the hybrid zoom operation and to instruct profile settings, which will be described later.

[0037] 2, the camera control unit 140 determines whether or not to operate in a hybrid zoom mode in which a hybrid zoom operation is performed (S1). The camera control unit 140 determines to operate in the hybrid zoom mode when "hybrid zoom" is turned ON in the setting menu by a user operation.

[0038] When operating in hybrid zoom mode (Yes in S1), the camera control unit 140 determines whether or not to perform a profile setting process to set a profile (S2). For example, when the user selects "hybrid zoom" in the setting menu of FIG. 3 and selects "Settings", the camera control unit 140 determines to perform the profile setting process.

[0039] If the answer is Yes in step S2, the camera control unit 140 proceeds to a profile setting process S3, and if the answer is No in step S2, the camera control unit 140 proceeds to step S4. The profile data is characteristic data that defines the relationship between the rotation angle of the zoom ring 222 (an example of a zoom amount that indicates the degree of the user's zoom operation on the interchangeable lens 200) and the focal length of the hybrid zoom operation. In the profile setting process S3, the degree of change in the focal length of the hybrid zoom operation according to the change in the rotation angle of the zoom ring 222 can be set according to the user's preference. Details of the profile setting process S3 will be described later.

[0040] The camera control unit 140 acquires profile data (S4). The profile data is recorded in advance in the flash memory 142. For example, the profile data is recorded in the flash memory 142 in the profile setting process S3.

[0041] Next, the camera control unit 140 acquires resolution data indicating the zoom resolution of the interchangeable lens 200 from the lens control unit 230 (S5). The zoom resolution is the smallest operation unit between the wide-angle end (W end) and the telephoto end (T end) at which zooming is possible. Alternatively, the zoom resolution is the smallest change unit of zooming operation or the position of the zoom lens.

[0042] In one example, the zoom resolution is defined by how many parts the section from the W end to the T end is divided into. For example, if the section from the W end to the T end is divided into 10 parts, it is expressed as a resolution N = 10. Alternatively, the zoom resolution may be expressed as the minimum change unit of the focal length (such as 0.1 mm).

[0043] The zoom resolution depends on the minimum unit of position of the zoom lens 220 that can be controlled by the zoom lens driving unit 221, the minimum unit of position of the zoom lens 220 that can be detected by the zoom lens position detection unit 223, and the like.

[0044] The camera control unit 140 judges whether the zoom resolution indicated by the acquired resolution data is higher (better) than a reference level (S6). For example, when the number of divisions N of the section from the W end to the T end is defined as the zoom resolution, the camera control unit 140 judges that the zoom resolution is higher than the reference level when the number of divisions N is larger than a threshold value Nth. Alternatively, when the zoom resolution is defined by the minimum change unit of the focal length, the camera control unit 140 judges that the zoom resolution is higher than the reference level when the zoom resolution is smaller than the threshold distance.

[0045] If the camera control unit 140 determines that the zoom resolution is higher than the reference level (Yes in S6), it turns off the complement mode (S7). If the camera control unit 140 determines that the zoom resolution is equal to or lower than the reference level, it turns on the complement mode (S8). The operation of the complement mode will be described later.

[0046] The camera control unit 140 detects whether or not the interchangeable lens 200 has been replaced (S9). For example, when an interchangeable lens 200 is attached to a camera body 100 to which no interchangeable lens 200 is attached, the camera control unit 140 detects that the interchangeable lens 200 has been replaced. Note that, although the same reference numerals are used here to refer to the interchangeable lens before and after replacement, the interchangeable lens before and after replacement may be individual lenses having different performances.

[0047] If the camera control unit 140 detects that the interchangeable lens 200 has been replaced (Yes in S9), it returns to step S5 and acquires resolution data indicating the zoom resolution of the replaced interchangeable lens 200 attached to the camera body 100.

[0048] When the camera control unit 140 does not detect that the interchangeable lens 200 has been replaced (No in S9), it determines whether or not to change the profile (S10). For example, the camera control unit 140 determines to change the profile when a user operation selects to change the profile in the setting menu.

[0049] If the camera control unit 140 determines to change the profile (Yes in S10), the process returns to step S3 and executes the profile setting process S3. If the camera control unit 140 determines not to change the profile (No in S10), the process proceeds to step S11.

[0050] When the camera control unit 140 detects a zoom operation by the user (Yes in S11), it performs a hybrid zoom operation (S12). For example, in step S11, the camera control unit 140 detects a zoom operation by detecting a change in the rotation angle of the zoom ring 222. In step S12, the camera control unit 140 performs a hybrid zoom operation according to the rotation angle of the zoom ring 222, the profile data, and the complementation mode. Details of step S12 will be described later.

[0051] If the camera control unit 140 does not detect a zoom operation (No in S11), the process returns to step S9. In the example of Fig. 2, steps S9 to S11 are looped, but the camera control unit 140 may end the flow of Fig. 2, for example, when a period during which a zoom operation is not detected exceeds a predetermined period, or when the power supply of the camera body 100 is turned off.

[0052] The camera control unit 140 causes the display monitor 130 to display focal length information indicating the focal length changed by the zoom operation (S13). FIG. 4 shows an example of how focal length information 131 is displayed in the digital camera 1. The focal length information 131 indicates the focal length of the hybrid zoom. The focal length of the hybrid zoom is expressed as a composite focal length that combines the focal length of the optical zoom with the focal length or enlargement factor of the electronic zoom (hereinafter sometimes referred to as "crop factor"). This allows the user to know the composite focal length.

[0053] 4, focal length information 131 is shown in a format that lists both the optical zoom focal length (60 mm) and the composite focal length (180 mm). The composite focal length may be displayed in a font, color, style, or the like that is different from that of the optical zoom focal length in order to inform the user that it is not the optical zoom focal length.

[0054] The display format of the focal length information 131 is not limited to this. For example, in the focal length information 131, the composite focal length may be displayed in a format in which the focal length of the optical zoom and the crop magnification are arranged side by side (for example, in a format such as "60 mm x 3.00"). Alternatively, the focal length information 131 may be displayed in a format in which the current composite focal length and the maximum value of the composite focal length (the longest composite focal length) are arranged side by side (for example, in a format such as "120 mm / 180 mm").

[0055] 4 is set to disappear after a predetermined period of time has elapsed so as not to interfere with the display of a live view image. For example, the camera control unit 140 causes the display monitor 130 to display the focal length information 131 when a zoom operation is detected, and ends the display of the focal length information 131 after a predetermined period of time has elapsed since the zoom operation is no longer detected.

[0056] On the other hand, when not operating in hybrid zoom mode (No in S1), the camera control unit 140 waits for a zoom operation by the user (S14), and when a zoom operation is detected (Yes in S14), performs an optical zoom operation according to the rotation angle of the zoom ring 222 (S15). For example, when the time during which a zoom operation is not detected exceeds a predetermined time, or when the power of the camera body 100 is turned off, the camera control unit 140 may end the flow of FIG.

[0057] 2-3. Profile setting process 2-3-1. Overall flow of profile setting process The following describes the profile setting process S3 in Fig. 2. Fig. 5 is a flowchart illustrating the profile setting process S3.

[0058] In Fig. 5, the camera control unit 140 displays a profile setting screen for setting a profile (S31). Fig. 6 shows an example of the profile setting screen. In the profile setting screen of Fig. 6, the user can select a plurality of menus such as (A) selection of the zoom end to be emphasized, and (B) threshold setting for improving accuracy of the zoom end to be emphasized. A display field 51 of Fig. 6 shows the focal length ranges for which an operation for improving accuracy is performed at the W end and T end determined based on the threshold setting of (B).

[0059] 5, for example, in a state in which a profile setting screen as exemplified in Fig. 6 is displayed on the display monitor 130, the camera control unit 140 accepts a user operation to select menu (A) or (B) on the operation unit 150 (S32). If menu (A) is selected by the user operation, the camera control unit 140 enters an important zoom end selection mode S33, and if menu (B) is selected, the camera control unit 140 enters a user threshold setting mode S34. Details of the important zoom end selection mode S33 and the threshold setting mode S34 will be described later.

[0060] The camera control unit 140 determines whether or not the profile setting is complete based on a user operation (S35). If the profile setting is not complete (No in S35), the camera control unit 140 returns to step S31 and continues the profile setting. If the camera control unit 140 determines that the profile setting is complete (Yes in S35), it stores the profile information set in steps S33 and S34 in, for example, the flash memory 142 (S36), and ends the process shown in FIG.

[0061] 2-3-2.Important zoom end selection mode Fig. 7 is a flow chart illustrating the important zoom end selection mode S33 of Fig. 5. The camera control unit 140 displays a selection screen for the important zoom end (S41). Fig. 8 shows an example of the selection screen for the important zoom end. When the user selects the "important zoom end" menu on the profile setting screen of Fig. 6, the camera control unit 140 transitions the screen to a selection screen as shown in Fig. 8. On the selection screen of Fig. 8, the user can select one of the following modes: (i) W end emphasis, (ii) T end emphasis, (iii) both ends emphasis, and (iv) OFF.

[0062] The W-end priority mode is a mode that aims to improve the accuracy of focal length adjustment near the W-end. In the W-end priority mode, the camera control unit 140 can adjust the focal length near the W-end more finely than in other focal length sections such as near the T-end. The T-end priority mode is a mode that aims to improve the accuracy of focal length adjustment near the T-end. The both-end priority mode is a mode that aims to improve the accuracy of focal length adjustment near both the W-end and the T-end.

[0063] Returning to Fig. 7, for example, with a selection screen as shown in Fig. 8 displayed on the display monitor 130, the camera control unit 140 accepts a user operation to select one of menus (i) to (iv) on the operation unit 150 (S42). The camera control unit 140 performs a process to set a profile according to the selected menu (S43 to S46). When OFF in menu (iv) is selected, the camera control unit 140 performs a linear profile setting (S46). In the linear profile setting, the accuracy of the focal length adjustment near the W end or T end does not need to be particularly differentiated from other focal length sections.

[0064] 9 is a diagram illustrating an example of the linear profile set in step S46. In the linear profile, the correspondence relationship between the optical focal length and the electronic zoom magnification is set so that the focal length between the W end and the T end specified by the user as described above gradually changes (linearly) according to the degree of zoom operation during hybrid zoom operation. This point will be described with reference to FIG. 9.

[0065] The dashed line graph in Fig. 9 illustrates the correspondence relationship between the rotation angle of the zoom ring 222 (an example of the zoom amount) and the optical focal length of the zoom lens 220. The optical focal length is indicated by the vertical axis on the left side of Fig. 9. For example, in the optical zoom of the interchangeable lens 200, the focal length of the zoom lens 220 changes linearly in accordance with the rotation angle of the zoom ring 222 between the focal length at the W end (20 mm in Fig. 9) and the focal length at the T end (60 mm in Fig. 9), as illustrated by the dashed line in Fig. 9.

[0066] The dashed-dotted line graph in FIG. 9 illustrates the correspondence relationship between the rotation angle of the zoom ring 222 and the electronic zoom magnification for realizing a hybrid zoom operation from the optical focal length. The electronic zoom magnification is shown on the vertical axis on the right side of FIG. 9. The electronic zoom magnification may be converted into the electronic zoom focal length. Such an electronic zoom focal length is calculated, for example, by multiplying the optical focal length of the zoom lens 220 by the electronic zoom magnification. The electronic zoom magnification is represented by the value obtained by dividing the number of diagonal pixels arranged in the diagonal direction of the image sensor 110 by the number of diagonal pixels of the image after electronic zoom.

[0067] FIG. 9 shows the magnification of the electronic zoom linearly in a schematic manner, but in a linear profile, the focal length of the hybrid zoom operation (composite focal length) only needs to be set to be linear with respect to the degree of zoom operation, and does not necessarily have to be linear as shown in FIG. 9.

[0068] 9 illustrates the correspondence relationship between the rotation angle of the zoom ring 222 and the focal length (composite focal length) of the hybrid zoom operation. The composite focal length is expressed as, for example, the sum of the optical focal length of the zoom lens 220 and the focal length of the electronic zoom. As shown in FIG. 9, the composite focal length is set in the digital camera 1 so as to change linearly according to the rotation angle of the zoom ring 222.

[0069] For example, the camera control unit 140 of the digital camera 1 assigns a setting value of the electronic zoom magnification for each optical focal length corresponding to each rotation angle of the zoom ring 222. The camera control unit 140 stores the setting value of the electronic zoom magnification as described above in the flash memory 142 as setting information resulting from the hybrid setting, for example.

[0070] According to the above process, during hybrid zoom operation of the digital camera 1 of this embodiment, the user can use the digital camera 1 with the feeling of operating the zoom ring 222 in the same way as optical zoom. According to the hybrid zoom operation of the digital camera 1 of this embodiment, electronic zoom is performed so as to change in conjunction with the optical zoom performed in response to the zoom operation of the user, and it is possible to reproduce the focal length range desired by the user.

[0071] During hybrid zoom operation, for example, the lens control unit 230 of the interchangeable lens 200 attached to the digital camera 1 acquires the focal length resulting from the optical zoom according to the rotation angle of the zoom ring 222. The lens control unit 230 sequentially transmits the acquired focal length data to the camera body 100 via the lens mount 250.

[0072] In the camera body 100, the camera control unit 140 receives focal length data from the interchangeable lens 200 via the body mount 160, and sequentially determines the electronic zoom magnification based on the focal length of the received data and the electronic zoom setting information. For example, the camera control unit 140 cuts out an image of a size smaller than the reciprocal of the determined electronic zoom magnification from the entire image indicated by the imaging data of the image sensor 110, and generates image data indicating an image obtained by enlarging the cut-out image by the electronic zoom magnification. In this manner, the hybrid zoom operation in the digital camera 1 is performed.

[0073] As described above, by using hybrid zoom operation according to a linear profile, the combined focal length of the hybrid zoom operation can be made to gradually change from the W end to the T end in accordance with the rotation angle of the zoom ring 222.

[0074] Fig. 10 is a diagram illustrating the W-end prioritized profile set in step S43 in Fig. 7. As shown in Fig. 10, in the W-end prioritized profile, the slope of the composite focal length of the hybrid zoom operation is gentle near the W end, and becomes relatively steep when the composite focal length exceeds a threshold value fα.

[0075] The threshold value fα can be set in step S34 of FIG. 5, as will be described later.

[0076] To enable a W-end weighted profile as shown in Fig. 10, in the W-end weighted profile setting step S43, when the rotation angle of the zoom ring 222 is between the W end and the threshold angle α, the gradient of the electronic zoom magnification is made gentler than in other sections. For example, when the rotation angle of the zoom ring 222 is between the W end and the threshold angle α, the camera control unit 140 sets the gradient of the electronic zoom to 0 as illustrated in Fig. 10, or fixes the electronic zoom magnification to, for example, 1. Here, the threshold angle α is the rotation angle of the zoom ring 222 corresponding to the threshold value fα of the composite focal length.

[0077] 10, in the W-end emphasis mode, the user can adjust the focal length near the W end more finely than in other focal length sections such as near the T end. Also, in the W-end emphasis mode, it is possible to reduce the risk of the composite focal length changing suddenly when the zoom ring 222 is at a position corresponding to the W end.

[0078] Fig. 11 is a diagram illustrating the T-end prioritized profile set in step S44 in Fig. 7. As shown in Fig. 11, in the T-end prioritized profile, the slope of the composite focal length of the hybrid zoom operation becomes gentler near the T end where the composite focal length exceeds the threshold fβ, compared to when the composite focal length is equal to or less than the threshold fβ.

[0079] 11, in the T-end-emphasized profile setting step S44, when the rotation angle of the zoom ring 222 is between the threshold angle β and the T end, the gradient of the electronic zoom magnification is made gentler than in other sections. Alternatively, in the T-end-emphasized profile setting step S44, when the rotation angle of the zoom ring 222 is between the threshold angle β and the T end, the electronic zoom magnification may be set not to change. Here, the threshold angle β is the rotation angle of the zoom ring 222 corresponding to the threshold fβ of the composite focal length.

[0080] 11, in the T-end emphasis mode, the user can adjust the focal length near the T end more finely than in other focal length sections such as near the W end. Also, in the T-end emphasis mode, it is possible to reduce the possibility that the composite focal length will change suddenly when the zoom ring 222 is at a position corresponding to the T end.

[0081] Fig. 12 is a diagram illustrating the both-end weighted profile set in step S45 in Fig. 7. As shown in Fig. 12, in the both-end weighted profile, the slope of the composite focal length of the hybrid zoom operation is gentler near the W end where the composite focal length is equal to or less than the threshold fα and near the T end where the composite focal length exceeds the threshold fβ, compared to when the composite focal length is greater than the threshold fα and equal to or less than fβ.

[0082] 12, in the both-end-weighted profile setting step S45, when the rotation angle of the zoom ring 222 is between the W end and the threshold angle α, and when it is between the threshold angle β and the T end, the slope of the electronic zoom magnification is made gentler than in other sections. Alternatively, in the both-end-weighted profile setting step S45, when the rotation angle of the zoom ring 222 is between the W end and the threshold angle α, and when it is between the threshold angle β and the T end, the electronic zoom magnification may be set not to change.

[0083] 12, in the both-side emphasis mode, the user can adjust the focal length near both the W end and the T end more finely than in other focal length sections. Also, in the both-side emphasis mode, it is possible to reduce the possibility that the composite focal length will change suddenly when the zoom ring 222 is at a position corresponding to the W end or the T end.

[0084] As described above, since the user can select the profile setting (S43 to S46) in the priority zoom end selection mode S33, it is possible to facilitate image capture within a focal length range desired by the user. For example, the user can adjust the focal length with a preferred profile that matches the user's operational feel for the zoom ring 222.

[0085] 2-3-3. Threshold setting by user Hereinafter, a detailed description will be given of threshold setting by the user S34 in Fig. 5. The thresholds α and β in the W-end weighted profile, T-end weighted profile and both-end weighted profile illustrated in Figs. 10 to 12, respectively, can be set by the user in threshold setting S34.

[0086] When the user selects the "Accuracy Improvement Threshold Setting" menu on the profile setting screen of Fig. 6, the camera control unit 140 transitions the screen to a threshold setting screen as shown in Fig. 13, 14, or 15. On the display monitor 130, when the W-end emphasis mode is selected, the threshold setting screen of Fig. 13 is displayed, when the T-end emphasis mode is selected, the threshold setting screen of Fig. 14 is displayed, and when the both-end emphasis mode is selected, the threshold setting screen of Fig. 15 is displayed.

[0087] In the threshold setting screen of Fig. 13 corresponding to the W-end emphasis mode, the threshold fα can be set. In the threshold setting screen of Fig. 14 corresponding to the T-end emphasis mode, the threshold fβ can be set. In the threshold setting screen of Fig. 15 corresponding to the both-end emphasis mode, both the thresholds fα and fβ can be set. The thresholds in each mode may be different.

[0088] As described above, since the user can set the threshold value, the user can adjust the focal length with a preferred profile that matches the user's operational feel for the zoom ring 222.

[0089] 2-4. Operations related to lens replacement 2, when the camera control unit 140 detects that the interchangeable lens 200 has been replaced (Yes in S9), it can perform a hybrid zoom operation according to the profile data (S12) without changing the profile (No in S10). That is, the camera control unit 140 can perform a hybrid zoom operation with the replaced interchangeable lens 200 by using the profile data set in the profile setting process S3 before the interchangeable lens 200 was replaced.

[0090] In this way, the camera control unit 140 of this embodiment maintains the profile data indicating the focal length characteristics of the hybrid zoom operation relative to the zoom amount before and after the interchangeable lens 200 is changed.

[0091] In this embodiment, the pre-change interchangeable lens 200 and the post-change interchangeable lens 200 are classified by the same resolution. For example, the pre-change interchangeable lens 200 and the post-change interchangeable lens 200 have the same resolution.

[0092] Even if the zoom resolution of the interchangeable lens 200 differs before and after the change, the profile data is substantially maintained. Figures 16 to 19 are diagrams for explaining how the profile data is substantially maintained before and after the interchangeable lens 200 is changed.

[0093] 16 is a graph illustrating an example of a linear profile when an interchangeable lens 200 with a zoom resolution of 400 is attached to the camera body 100. The lower graph (b) of Fig. 16 is a graph illustrating an example of a linear profile when an interchangeable lens 200 with a zoom resolution of 10 is attached to the camera body 100.

[0094] As shown in Fig. 16, when viewed locally (microscopically), the change in focal length in response to a change in the rotation angle of the zoom ring 222 in interchangeable lenses 200 with different zoom resolutions differs from one another. This is because, as is well shown in Fig. 16(b), when the resolution is low, there are many sections in which the focal length does not change even if the rotation angle of the zoom ring 222 is changed.

[0095] Although there are local differences as described above before and after changing the interchangeable lens 200, the digital camera 1 according to this embodiment substantially maintains the profile data indicating the change in focal length of the hybrid zoom operation in response to a change in the rotation angle of the zoom ring 222. For example, in the linear profile of Fig. 16, the camera control unit 140 maintains the rate of change (slope) of the focal length from the W end to the T end before and after changing the interchangeable lens 200. In the example of Fig. 16, in both graphs (a) and (b), the slope of the regression line or approximation line with respect to the solid line indicating the focal length of the hybrid zoom operation is maintained to be the same.

[0096] To enable such profile data to be maintained, the camera control unit 140 maintains the rate of change of the magnification of the electronic zoom before and after the interchangeable lens 200 is changed.

[0097] 17 is a graph illustrating a W-end-emphasized profile when an interchangeable lens 200 with a zoom resolution of 400 is attached to the camera body 100. The lower graph (b) of Fig. 17 is a graph illustrating a W-end-emphasized profile when an interchangeable lens 200 with a zoom resolution of 10 is attached to the camera body 100.

[0098] In the W-end emphasis mode, the camera control unit 140 maintains the rate of change of focal length when the rotation angle of the zoom ring 222 is between the W end and the threshold angle α, and the rate of change of focal length when the rotation angle is between the threshold angle α and the T end, before and after changing the interchangeable lens 200.

[0099] 18 is a graph illustrating a T-end-emphasized profile when an interchangeable lens 200 with a zoom resolution of 400 is attached to the camera body 100. The lower graph (b) of Fig. 18 is a graph illustrating a T-end-emphasized profile when an interchangeable lens 200 with a zoom resolution of 10 is attached to the camera body 100.

[0100] In the T-end emphasis mode, the camera control unit 140 maintains the rate of change of focal length when the rotation angle of the zoom ring 222 is between the W end and the threshold angle β, and the rate of change of focal length when the rotation angle is between the threshold angle β and the T end, before and after changing the interchangeable lens 200.

[0101] 19 is a graph illustrating a both-sides-oriented profile when an interchangeable lens 200 with a zoom resolution of 400 is attached to the camera body 100. The lower graph (b) of Fig. 19 is a graph illustrating a both-sides-oriented profile when an interchangeable lens 200 with a zoom resolution of 10 is attached to the camera body 100.

[0102] In the both-end emphasis mode, the camera control unit 140 maintains, before and after changing the interchangeable lens 200, the rate of change of focal length when the rotation angle of the zoom ring 222 is between the W end and the threshold angle α, the rate of change of focal length when the rotation angle is between the threshold angle α and the threshold angle β, and the rate of change of focal length when the rotation angle is between the threshold angle β and the T end.

[0103] As described above, by maintaining the profile data before and after changing the interchangeable lens 200, the user can adjust the focal length with a preferred profile that matches the user's operating feel of the zoom ring 222, even if the interchangeable lens 200 is changed.

[0104] 2-5. Complement mode Hereinafter, a detailed description will be given of the complement mode shown in step S8 in Fig. 2. The complement mode is turned ON when the zoom resolution is equal to or lower than the reference level.

[0105] Fig. 20 is a diagram for explaining the complement mode. The upper graph (a) of Fig. 20 is a graph illustrating, as a comparative example, a linear profile when the complement mode is OFF in a case where an interchangeable lens 200 with a zoom resolution of 5 is attached to the camera body 100. The lower graph (a) of Fig. 20 is a graph illustrating a linear profile when the complement mode is ON in the above case.

[0106] As shown in (a) of FIG. 20, when the zoom resolution is below a reference level (N=5 in FIG. 20), the focal length changes suddenly when the rotation angle of the zoom ring 222 reaches a predetermined value, which may result in a poor user experience.

[0107] Therefore, in this embodiment, when the zoom resolution is equal to or lower than the reference level, the camera control unit 140 turns on the complement mode. When the complement mode is on, the camera control unit 140 increases the frequency of changes in the magnification of the electronic zoom in response to changes in the zoom amount compared to when the complement mode is off.

[0108] For example, when the complement mode is ON, the camera control unit 140 changes the magnification of the electronic zoom at intervals d that are smaller than the difference D (see FIG. 20) between the rotation angles of the zoom ring 222 at which the focal length of the optical zoom changes. The magnification of the electronic zoom that changes at intervals d is set to be smaller than the magnification of the electronic zoom that changes when the rotation angle of the zoom ring 222 moves by D when the complement mode is OFF. d is greater than 0 and less than D. For example, d=0.5D.

[0109] As a result, when the complementation mode is ON, the digital camera 1 can reduce the degree to which the focal length changes suddenly when the rotation angle of the zoom ring 222 reaches a predetermined value.

[0110] Although an example in which the complementary mode is applied to a linear profile has been described with reference to FIG. 20, the complementary mode can also be applied to a profile in the W-end weighted mode, T-end weighted mode, and both-end weighted mode.

[0111] 3. Summary As described above, the digital camera 1 according to the present embodiment, which is an example of an imaging device, includes the camera body 100, an imaging unit, a body mount 160 which is an example of an input unit, and a camera control unit 140 which is an example of a control unit. The interchangeable lens 200 which is an example of an optical system can be attached and detached to the camera body 100. The imaging unit captures an image of a subject through the interchangeable lens 200 to generate image data. The body mount 160 acquires a zoom amount indicating the degree of zoom operation of the user on the interchangeable lens 200. The camera control unit 140 changes the magnification of an image cut out from the image data so as to realize a hybrid zoom operation that changes the focal length (composite focal length) of the hybrid zoom operation from an optical focal length which is an example of a first focal length by the interchangeable lens 200 to an example of a second focal length corresponding to the angle of view of the subject image in the image data according to the zoom amount from the body mount 160 (S12). The camera control unit 140 maintains the characteristic of the composite focal length with respect to the zoom amount before and after the change of the interchangeable lens 200.

[0112] According to the above-described digital camera 1, even if the interchangeable lens 200 is changed, it is possible to facilitate image capture within a focal length range desired by the user.

[0113] In the digital camera 1 of this embodiment, the pre-change interchangeable lens 200 and the post-change interchangeable lens 200 may be lenses classified by the same resolution. With this configuration, even if the interchangeable lens 200 is changed, the resolution does not change, so the user can take images within a focal length range that is desired by the user.

[0114] In the digital camera 1 of this embodiment, the pre-change interchangeable lens 200 and the post-change interchangeable lens 200 may be lenses having different zoom resolutions. With this configuration, even if the lens is replaced with one having a different zoom resolution, the user can take images within a focal length range that is desired by the user.

[0115] In the digital camera 1 of this embodiment, the interchangeable lens 200 may include a zoom lens. The digital camera 1 may further include a zoom ring 222 that can move the zoom lens by rotating. The zoom operation is an operation of rotating the zoom ring 222. With this configuration, the user can perform a zoom operation with an operation that matches the user's operating feel for the zoom ring 222, making it easier for the user to capture images within a focal length range desired by the user.

[0116] In the digital camera 1 of this embodiment, the camera control unit 140 may change the magnification ratio of the interchangeable lens 200 from the W end to the T end continuously or intermittently.

[0117] The digital camera 1 of this embodiment may further include an operation unit 150 that accepts a user operation for setting the characteristics of the composite focal length. The camera control unit 140 maintains the characteristics of the composite focal length that were set based on a user operation before changing the interchangeable lens 200, before and after changing the interchangeable lens 200. With this configuration, the characteristics of the composite focal length set by the user are maintained even if the interchangeable lens 200 is changed. Therefore, the digital camera 1 can make it easier for the user to capture images within a focal length range that is desired by the user.

[0118] In the digital camera 1 of this embodiment, the characteristics of the composite focal length may include a characteristic in which the composite focal length changes linearly from the W end to the T end of the interchangeable lens 200 in accordance with the zoom amount.

[0119] In the digital camera 1 of this embodiment, the characteristics of the composite focal length may include the following characteristics. Between the W end of the interchangeable lens 200 and a predetermined position between the W end and the T end, the composite focal length changes at a first rate of change with respect to the change in the zoom amount. Between the predetermined position and the T end, the composite focal length changes at a second rate of change different from the first rate of change in response to a change in the zoom amount. In this case, the digital camera 1 may further include an operation unit 150 that accepts a user operation for setting the predetermined position.

[0120] In the digital camera 1 of this embodiment, the characteristics of the composite focal length may include the following characteristics. Between the W end of the interchangeable lens 200 and a first predetermined position between the W end and the T end, the composite focal length changes at a first rate of change with respect to the change in the zoom amount. Between the first predetermined position and a second predetermined position between the first predetermined position and the T end, the composite focal length changes at a second rate of change different from the first rate of change in response to a change in the zoom amount. Between the second predetermined position and the T end, the composite focal length changes at a third rate of change different from the second rate of change in response to a change in the zoom amount. In this case, the digital camera 1 may further include an operation unit 150 that accepts a user operation for setting the first and second predetermined positions.

[0121] The above-described composite focal length characteristics allow the user to perform zoom operations according to the user's preferred operation feel for the zoom ring 222. Therefore, the digital camera 1 of this embodiment can facilitate image capture within a focal length range desired by the user.

[0122] The digital camera 1 of this embodiment may further include a display monitor 130, which is an example of a display unit. The camera control unit 140 causes the display monitor 130 to display information indicating the composite focal length. The information indicating the composite focal length may be a numerical value indicating the composite focal length. The display color of the information indicating the composite focal length may be different from the display color of the information indicating the optical focal length. With this configuration, the user can know the composite focal length by checking the information displayed on the display monitor 130.

[0123] In the digital camera 1 of this embodiment, the camera control unit 140 acquires resolution data indicating the zoom resolution of the interchangeable lens 200 (S5), and if the zoom resolution indicated by the resolution data is equal to or lower than a reference level (No in S6), the frequency of changes in the magnification ratio relative to changes in the zoom amount may be increased (S8) compared to when the zoom resolution is higher than the reference level. With this configuration, it is possible to reduce the degree to which the focal length changes suddenly when the zoom amount reaches a predetermined value.

[0124] 4. Other embodiments As described above, the embodiment has been described as an example of the technology in the present disclosure. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are appropriately performed. In addition, it is also possible to combine the components described in the above embodiment to form a new embodiment. Therefore, the following provides examples of modified examples as other embodiments.

[0125] 4-1.First modified example In the above embodiment, it has been described that the user can select one of the modes of (i) W-end emphasis, (ii) T-end emphasis, (iii) both ends emphasis, and (iv) OFF (linear profile), but the present disclosure is not limited thereto. For example, the profile that the user can select may be only a linear profile. Even in this case, the camera control unit 140 substantially maintains the selected linear profile as the characteristic of the composite focal length with respect to the rotation angle of the zoom ring 222 before and after the exchangeable lens 200 is changed.

[0126] 4-2. Second Modification Example For example, the number of recording pixels of the image is selected from 24M (L size), 12M (M size), and 6M (S size). For example, when the recording size of the image is near the W end where the combined focal length F is 20.0 mm (when the crop ratio C is 1), it is set to the L size. When 20.1 mm ≤ F ≤ 50.0 mm (1 < C ≤ 1.4), it is set to the M size. When 50.0 mm < F ≤ 120 mm (1.4 < C ≤ 2), it is set to the S size.

[0127] In the above settings, even if the user takes a picture with the zoom ring 222 moved to the W end to record an image in the L size, if the zoom ring 222 moves by 0.1 mm in focal length due to an accidental operation or vibration, the recording size may become the M size. Also, in the above settings, when shooting a moving image, if the zoom ring 222 is operated near the W end, the angle of view may change suddenly, and the recorded moving image may appear jerky.

[0128] Therefore, in this modification example, even when the hybrid zoom mode is ON, when the zoom ring 222 is rotated within a range of a predetermined angle (within the "play" range) from the W end, the camera control unit 140 does not perform crop zoom. The range of the predetermined angle is, for example, 10% of the rotation angle corresponding to from the W end to the T end with the W end as the starting point. Such a play setting can be realized as one setting of the W end priority mode described in the above embodiment.

[0129] Alternatively, in this modification example, in order to notify that an image may be recorded in a size unintended by the user when the hybrid zoom mode is ON, the camera control unit 140 may display a warning message on the display monitor 130. The warning message is, for example, a message such as "When using hybrid zoom, the image size (L / M / S) will be automatically switched according to the focal length."

[0130] According to this modification, it is possible to prevent an image from being recorded at an image size that is not intended by the user, and also to prevent the angle of view of a moving image from suddenly and unintentionally changing during shooting of the moving image.

[0131] 4-3.Third modified example In the above embodiment, the zoom operation is performed by rotating the zoom ring 222, but the zoom operation of the present disclosure is not limited to this. For example, the zoom lens 220 may be electrically operated, in which case the zoom operation may be performed by using a zoom lever, a function button, or the like.

[0132] 4-4.Fourth modified example In the above embodiment, an example has been described in which the profile setting process S3 and the hybrid zoom operation (S12) according to the set profile data are performed in the hybrid zoom mode (Yes in S1), but the present disclosure is not limited to this. For example, even when the camera control unit 140 performs a zoom operation using only the electric optical zoom, the camera control unit 140 may perform a profile setting process and a zoom operation according to the set profile data. Also, for example, even when the camera control unit 140 performs a zoom operation using only the crop zoom, such as when a fixed focal length lens is used, the camera control unit 140 may perform a profile setting process and a zoom operation according to the set profile data.

[0133] 5.Examples The following provides examples of aspects of the present disclosure.

[0134] <Aspect 1> A main body to which an optical system can be detached; an imaging unit that captures an object image via the optical system and generates image data; an input unit for acquiring a zoom amount indicating a degree of a user's zoom operation on the optical system; a control unit that changes the magnification of an image cut out from the image data so as to realize a hybrid zoom operation in which a first focal length of the optical system is changed to a second focal length corresponding to an angle of view of the subject image in the image data in accordance with the zoom amount from the input unit, The control unit maintains a characteristic of the second focal length with respect to the zoom amount before and after the change of the optical system.

[0135] <Aspect 2> 2. The imaging device of claim 1, wherein the optical system before the change and the optical system after the change are lenses classified with the same resolution.

[0136] <Aspect 3> 3. The imaging device according to aspect 1 or 2, wherein the pre-change optical system and the post-change optical system are lenses having different zoom resolutions.

[0137] <Aspect 4> the optical system includes a zoom lens; the imaging device further includes a zoom ring that can move the zoom lens by rotating; 4. The imaging device according to any one of aspects 1 to 3, wherein the zoom operation is an operation of rotating the zoom ring.

[0138] <Aspect 5> 5. The imaging device according to any one of aspects 1 to 4, wherein the control unit changes the magnification ratio continuously or intermittently from a wide-angle end to a telephoto end of the optical system.

[0139] <Aspect 6> an operation unit that receives a user operation for setting a characteristic of the second focal length, The imaging device according to any one of aspects 1 to 5, wherein the control unit maintains the characteristics of the second focal length that was set based on the user operation before the optical system was changed, before and after the optical system is changed.

[0140] <Aspect 7> 7. The imaging device of claim 6, wherein the characteristic of the second focal length includes a characteristic in which the second focal length changes linearly from the wide-angle end to the telephoto end of the optical system depending on the zoom amount.

[0141] <Aspect 8> The characteristic of the second focal length is that the second focal length is between a wide-angle end of the optical system and a predetermined position between the wide-angle end and a telephoto end, the zoom amount changes at a first rate of change with respect to the change in the zoom amount, Between the predetermined position and the telephoto end, the zoom amount changes at a second rate of change different from the first rate of change. 7. The imaging device of embodiment 6, comprising the characteristics.

[0142] <Aspect 9> 9. The imaging device according to aspect 8, further comprising an operation unit that accepts a user operation for setting the predetermined position.

[0143] <Aspect 10> The characteristic of the second focal length is that the second focal length is between a wide-angle end of the optical system and a first predetermined position between the wide-angle end and a telephoto end, the zoom amount changes at a first rate of change with respect to the change in the zoom amount, between the first predetermined position and a second predetermined position between the first predetermined position and the telephoto end, the zoom amount changes at a second rate of change different from the first rate of change; Between the second predetermined position and the telephoto end, the zoom amount changes at a third rate of change different from the second rate of change. 7. The imaging device of embodiment 6, comprising the characteristics.

[0144] <Aspect 11> 11. The imaging device according to aspect 10, further comprising an operation unit that accepts a user operation for setting the first predetermined position and the second predetermined position.

[0145] <Aspect 12> Further comprising a display unit, The control unit causes the display unit to display information indicating the second focal length. The imaging device according to any one of aspects 1 to 11.

[0146] <Aspect 13> 13. The imaging device of claim 12, wherein the information indicating the second focal length is a numerical value indicating the second focal length.

[0147] <Aspect 14> the display unit is capable of displaying information indicating the first focal length on the display unit, 13. The imaging device according to aspect 12, wherein a display color of the information indicating the second focal length is different from a display color of the information indicating the first focal length.

[0148] <Aspect 15> The control unit is obtaining resolution data indicative of a zoom resolution of the optical system; When the zoom resolution indicated by the resolution data is equal to or lower than a reference level, a frequency of change in the magnification ratio with respect to a change in the zoom amount is increased compared to a case where the zoom resolution is greater than the reference level. The imaging device according to any one of aspects 1 to 14.

[0149] <Aspect 16> A main body to which an optical system can be detached; an imaging unit that captures an object image via the optical system and generates image data; an input unit for acquiring a zoom amount indicating a degree of a user's zoom operation on the optical system; a control unit that changes the magnification of an image cut out from the image data so as to realize a hybrid zoom operation in which a first focal length of the optical system is changed to a second focal length corresponding to an angle of view of the subject image in the image data, in accordance with the zoom amount from the input unit; and an operation unit that receives a user operation for setting the second focal length characteristic, the control unit changes the second focal length in accordance with the zoom amount based on characteristics of the second focal length in the hybrid zoom operation. Imaging device.

[0150] <Aspect 17> 17. The imaging device of claim 16, wherein the characteristic of the second focal length includes a characteristic in which the second focal length changes linearly from the wide-angle end to the telephoto end of the optical system depending on the zoom amount.

[0151] <Aspect 18> The characteristic of the second focal length is that the second focal length is between a wide-angle end of the optical system and a predetermined position between the wide-angle end and a telephoto end, the zoom amount changes at a first rate of change with respect to the change in the zoom amount, Between the predetermined position and the telephoto end, the zoom amount changes at a second rate of change different from the first rate of change. 17. The imaging device of claim 16, comprising the characteristic.

[0152] <Aspect 19> 20. The imaging device according to aspect 18, further comprising an operation unit that accepts a user operation for setting the predetermined position.

[0153] <Aspect 20> The characteristic of the second focal length is that the second focal length is between a wide-angle end of the optical system and a first predetermined position between the wide-angle end and a telephoto end, the zoom amount changes at a first rate of change with respect to the change in the zoom amount, between the first predetermined position and a second predetermined position between the first predetermined position and the telephoto end, the zoom amount changes at a second rate of change different from the first rate of change; Between the second predetermined position and the telephoto end, the zoom amount changes at a third rate of change different from the second rate of change. 17. The imaging device of claim 16, comprising the characteristic.

[0154] <Aspect 21> 21. The imaging device according to aspect 20, further comprising an operation unit that accepts a user operation for setting the first predetermined position and the second predetermined position. [Industrial Applicability]

[0155] The present disclosure is applicable to imaging devices. [Explanation of symbols]

[0156] 1. Digital camera 100 Camera body 130 Display Monitor 140 Camera control unit 150 Operation section 160 Body Mount 200 Interchangeable Lenses 220 Zoom Lens 222 Zoom Ring

Claims

1. A main body to which an optical system can be detached; an imaging unit that captures an object image via the optical system and generates image data; an input unit for acquiring a zoom amount indicating a degree of a user's zoom operation on the optical system; a control unit that changes the magnification of an image cut out from the image data so as to realize a hybrid zoom operation in which a first focal length of the optical system is changed to a second focal length corresponding to an angle of view of the subject image in the image data in accordance with the zoom amount from the input unit, The control unit maintains a characteristic of the second focal length with respect to the zoom amount before and after the change of the optical system.

2. the optical system includes a zoom lens; the imaging device further includes a zoom ring that can move the zoom lens by rotating; The imaging device according to claim 1 , wherein the zoom operation is an operation of rotating the zoom ring.

3. The imaging device according to claim 1 , wherein the control unit changes the magnification ratio continuously or intermittently from a wide-angle end to a telephoto end of the optical system.

4. an operation unit that receives a user operation for setting a characteristic of the second focal length, The imaging device according to any one of claims 1 to 3, wherein the control unit maintains the characteristics of the second focal length set based on the user operation before the optical system is changed before and after the optical system is changed.

5. The imaging device according to claim 4 , wherein the characteristic of the second focal length includes a characteristic in which the second focal length changes linearly from a wide-angle end to a telephoto end of the optical system in accordance with the zoom amount.

6. The characteristic of the second focal length is that the second focal length is between a wide-angle end of the optical system and a predetermined position between the wide-angle end and a telephoto end, the zoom amount changes at a first rate of change with respect to the change in the zoom amount, Between the predetermined position and the telephoto end, the zoom amount changes at a second rate of change different from the first rate of change. The imaging device of claim 4 including the characteristic.

7. The imaging device according to claim 6 , further comprising an operation unit that accepts a user operation for setting the predetermined position.

8. The characteristic of the second focal length is that the second focal length is between a wide-angle end of the optical system and a first predetermined position between the wide-angle end and a telephoto end, the zoom amount changes at a first rate of change with respect to the change in the zoom amount, between the first predetermined position and a second predetermined position between the first predetermined position and the telephoto end, the zoom amount changes at a second rate of change different from the first rate of change; Between the second predetermined position and the telephoto end, the zoom amount changes at a third rate of change different from the second rate of change. The imaging device of claim 4 including the characteristic.

9. The imaging device according to claim 8 , further comprising an operation unit that accepts a user operation for setting the first predetermined position and the second predetermined position.

10. Further comprising a display unit, The control unit causes the display unit to display information indicating the second focal length. The imaging device according to claim 1 .

11. The control unit is obtaining resolution data indicative of a zoom resolution of the optical system; When the zoom resolution indicated by the resolution data is equal to or lower than a reference level, a frequency of change in the magnification ratio with respect to a change in the zoom amount is increased compared to a case where the zoom resolution is greater than the reference level. The imaging device according to claim 1 .

12. A main body to which an optical system can be detached; an imaging unit that captures an object image via the optical system and generates image data; an input unit for acquiring a zoom amount indicating a degree of a user's zoom operation on the optical system; a control unit that changes the magnification of an image cut out from the image data so as to realize a hybrid zoom operation in which a first focal length of the optical system is changed to a second focal length corresponding to an angle of view of the subject image in the image data, in accordance with the zoom amount from the input unit; and an operation unit that receives a user operation for setting the second focal length characteristic, The control unit changes the second focal length in accordance with the zoom amount based on a characteristic of the second focal length in the hybrid zoom operation. Imaging device.

13. The imaging device according to claim 12 , wherein the characteristic of the second focal length includes a characteristic in which the second focal length changes linearly from a wide-angle end to a telephoto end of the optical system in accordance with the zoom amount.

14. The characteristic of the second focal length is that the second focal length is between a wide-angle end of the optical system and a predetermined position between the wide-angle end and a telephoto end, the zoom amount changes at a first rate of change with respect to the change in the zoom amount, Between the predetermined position and the telephoto end, the zoom amount changes at a second rate of change different from the first rate of change. The imaging device of claim 12 including the characteristic.

15. The imaging device according to claim 14 , further comprising an operation unit that accepts a user operation for setting the predetermined position.

16. The characteristic of the second focal length is that the second focal length is between a wide-angle end of the optical system and a first predetermined position between the wide-angle end and a telephoto end, the zoom amount changes at a first rate of change with respect to the change in the zoom amount, between the first predetermined position and a second predetermined position between the first predetermined position and the telephoto end, the zoom amount changes at a second rate of change different from the first rate of change; Between the second predetermined position and the telephoto end, the zoom amount changes at a third rate of change different from the second rate of change. The imaging device of claim 12 including the characteristic.

17. The imaging device according to claim 16 , further comprising an operation unit that accepts a user operation for setting the first predetermined position and the second predetermined position.

Images