Image capture device, lens device, image capture system, image capture device and lens device control method, and program

Abstract

To provide an imaging apparatus capable of acquiring an image intended by a user with a simple operation.SOLUTION: An imaging apparatus (200) to / from which a lens device (100) which can be tilt-driven by actuators (121 to 124) can be attached / detached includes an image processing section (203) for adding the effect of emulating tilt-shift photography to the image acquired through the lens device (100) by image processing and a control section (207) for determining whether to add the effect to the image at least by the image processing or to add the effect to the image at least by tilt driving.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an imaging device, a lens device, an imaging system, a control method for an imaging device and a lens device, and a program. [Background technology]

[0002] Conventionally, lens devices are known that are capable of tilt photography, which focuses on the entire object surface tilted in the direction of the optical axis, by changing the optical axis of the imaging optical system, and reverse tilt photography, which focuses on only a certain area and blurs the rest. Also known are imaging devices that can acquire images that mimic reverse tilt photography using image processing. These images, which simulate real scenery in a miniature form, are called miniature-style or diorama-style images, and are often installed in imaging devices as a function to add special effects to images.

[0003] When such an interchangeable lens is used in combination with an imaging device, the tilt-tilt effect can be obtained by tilting the optical axis of the interchangeable lens, so it is conceivable that some users do not need to add the tilt-tilt effect through image processing. Furthermore, combining the operation of the interchangeable lens with image processing is complicated, and it may be difficult for users to achieve the effect they intend. Therefore, Patent Document 1 discloses an imaging device configured so that, when an interchangeable lens capable of providing the tilt-tilt effect is combined with an imaging device capable of image processing, the tilt-tilt effect cannot be obtained through image processing. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-239346 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the imaging device disclosed in Patent Document 1 does not allow the user to obtain an intended image with a simple operation.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an imaging device that allows a user to obtain an image that he or she desires with a simple operation. [Means for solving the problem]

[0007] According to one aspect of the present invention, there is provided an imaging device to which a lens device capable of being tilt-driven by an actuator can be attached and detached, the imaging device including: an image processing unit that applies a reverse tilt effect to an image captured through the lens device by image processing; When the lens device is attached to the imaging device, The image processing device further includes a control unit that determines whether to add the tilt-tilt effect to the image at least by the image processing or whether to add the tilt-tilt effect to the image at least by the tilt driving.

[0008] Other objects and features of the present invention are illustrated in the following examples. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide an imaging device that allows a user to obtain an image that he or she intends with a simple operation. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 2 is a configuration diagram of an imaging system in each embodiment. [Figure 2] 4 is a flowchart showing a process of the imaging system in the first embodiment. [Figure 3] 10 is a flowchart showing a process of the imaging system in the second embodiment. [Figure 4] FIG. 3 is an explanatory diagram of a display screen of a display unit in each embodiment. [Figure 5] 3A and 3B are diagrams illustrating the relationship between a subject, an imaging system, and a focal plane in each embodiment. [Figure 6]3A and 3B are diagrams illustrating the relationship between a subject, an imaging system, and a focal plane in each embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0012] <Image capture system configuration> First, an imaging system (camera system) 10 in each embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a configuration diagram of the imaging system 10. The imaging system 10 is configured to include an interchangeable lens (lens device) 100 and an imaging device (camera body) 200. The interchangeable lens 100 can be tilted (the angle between the subject plane and the focal plane (the tilt of the focal plane relative to the subject plane) can be changed) by an internal actuator, and is detachable from the imaging device 200.

[0013] The interchangeable lens 100 has an imaging optical system that forms a subject image. The imaging optical system includes, in order from the subject side (object side) to the image side, a field lens 101, a first lens (tilt / shift lens) 102, a second lens (tilt / shift lens) 103, an aperture unit 106, a zoom lens 104, and a focus lens 105. The first lens 102 and the second lens 103 generate a tilt effect or a shift effect. The aperture unit 106 adjusts the amount of light. The zoom lens 104 adjusts the focal length. The focus lens 105 functions as a focusing lens. A lens configuration in which the focus lens 105 is positioned behind the subject side is called a rear-focus lens, and is commonly used in small interchangeable lens cameras and compact digital cameras.

[0014] The first lens 102, the second lens 103, and the focus lens 105 are held by lens holding frames 111, 112, and 113, respectively, and are configured to be movable in the axial direction by guide shafts (not shown). The focus lens 105 is driven by a stepping motor 126 in a direction along the optical axis OA (optical axis direction).

[0015] The first lens 102 and the second lens 103 (two optical elements) are driven by stepping motors (actuators) 121, 122, 123, and 124 in the X and Y directions in FIG. 1, respectively, to generate a tilt effect or a shift effect. Specifically, when the first lens 102 and the second lens 103 are moved in opposite directions, a tilt effect can be obtained. On the other hand, when the first lens 102 and the second lens 103 are moved in the same direction, a shift effect can be obtained. The respective positions of the first lens 102, the second lens 103, and the focus lens 105 can be detected by position detection sensors (not shown).

[0016] The zoom lens 104 is provided with an encoder for detecting its position, and is capable of detecting changes in the imaging magnification or angle of view that accompany zooming.

[0017] Stepping motors 121, 122, 123, 124, 125, and 126 are motors that move first lens 102, second lens 103, focus lens 105, and aperture unit 106 in synchronization with drive pulses, respectively. Stepping motors 121 to 126, together with drive circuits 131 to 136 described below, constitute lens drive means that move first lens 102, second lens 103, focus lens 105, and aperture unit 106.

[0018] The lens microprocessor 150 controls the overall operation of the interchangeable lens 100 in response to lens control commands provided by the imaging device 200. The lens microprocessor 150 also transmits various types of lens information to a communication unit (camera communication unit) 205 of the imaging device 200 via a communication unit (lens communication unit) 151, or receives camera information.

[0019] The drive circuits 131, 132, 133, 134, 135, and 136 drive the stepping motors 121, 122, 123, 124, 125, and 126, respectively, in response to drive signals input from the lens microprocessor 150. That is, tilt / shift operations, focusing operations, and depth / exposure adjustment operations of the imaging optical system are performed by controlling the stepping motors 121, 122, 123, 124, 125, and 126. In this manner, the lens microprocessor 150 controls each motor (drive means) by supplying drive signals to each drive circuit. The motors that move the first lens 102, the second lens 103, the focus lens 105, and the aperture unit 106 may be DC motors or ultrasonic motors that use piezoelectric elements as vibrators, and the type of actuator is not limited.

[0020] The aperture unit 106 is configured to include aperture blades 106a and 106b. The states of the aperture blades 106a and 106b are detected by an aperture full-open position detection sensor 127 and input to a lens microprocessor 150. The lens microprocessor 150 outputs a control signal to a drive circuit 135 based on the input signal. The drive circuit 135 drives the stepping motor 125 based on the control signal. The aperture full-open position detection sensor 127 is configured to include a sensor (detection means) such as a photointerrupter, and detects whether the blades of the aperture unit 106 are in the full-open position (the position where the aperture diameter is maximum).

[0021] The tilt operation unit 141 is an operation unit for changing the amount and direction of tilt by a user's operation. The shift operation unit 142 is an operation unit for changing the amount and direction of shift by a user's operation. The first lens 102 and the second lens 103 are driven in accordance with the operation of the tilt operation unit 141 and the shift operation unit 142, thereby achieving the tilt effect and shift effect intended by the user.

[0022] The imaging device 200 has an imaging element 201, an A / D conversion circuit 202, a signal processing circuit (image processing unit) 203, a storage unit 204, a communication unit 205, a display unit 206, a camera unit microprocessor (control unit) 207, and an operation unit 208. The imaging element 201 is a photoelectric conversion element such as a CMOS (Complementary Metal-Oxide-Semiconductor) sensor or a CCD (Charge Coupled Device) sensor. The imaging element 201 photoelectrically converts a subject image (optical image) formed by the interchangeable lens 100 and outputs an electrical signal (analog signal).

[0023] An optical image that passes through the interchangeable lens 100 is converted into an analog signal by photoelectric conversion in the image sensor 201. The A / D conversion circuit 202 converts the analog signal output from the image sensor 201 into a digital signal. The signal processing circuit 203 performs various image processing on the electrical signal (digital signal) input from the A / D conversion circuit 202. As a result, the signal processing circuit 203 generates focus information that indicates the focus state of the image, detects the distance to the subject, generates luminance signal information that indicates the exposure state, and converts the data into a recordable data format. The signal processing circuit 203 also applies an effect simulating reverse tilt photography to the image (captured image) acquired through the interchangeable lens 100 by image processing. A storage unit 204 stores the output signal (image signal) from the signal processing circuit 203.

[0024] The display unit 206 displays the subject image (image signal) generated by the signal processing circuit 203. This allows the user to check the composition of the subject image being photographed, the focus state, etc. in real time. The display unit 206 is a touch panel, and the user can perform various inputs by touch operation.

[0025] The camera microprocessor 207 controls the imaging device 200 in response to input from a shooting instruction switch or camera setting related switches (not shown). The camera microprocessor 207 also issues operation requests or settings to the interchangeable lens 100, such as requests to drive the first lens 102, the second lens 103, the focus lens 105, or the aperture unit 106, to the lens microprocessor (control unit) 150.

[0026] The operation unit 208 is a member for inputting operations by the user, and includes a plurality of operation units that can be operated by the user, such as the touch panel of the display unit 206, a release button, and a dial. [Example]

[0027] Next, the processing of the imaging system 10 in the first embodiment will be described with reference to Fig. 2. Fig. 2 is a flowchart showing the processing of the imaging system 10 in the present embodiment. This processing starts when the imaging device 200 is powered on or the interchangeable lens 100 is attached to the imaging device 200.

[0028] First, in step S200, the user operates the imaging device 200 to switch to a mode that adds special effects during shooting (a creative filter mode that adds effects that mimic tilt-tilt photography). The camera microprocessor 207 then determines whether or not "diorama effect," which adds the effect of tilt-tilt photography, has been selected in that mode. If "diorama effect" has been selected, the process proceeds to step S201. On the other hand, if "diorama effect" has not been selected, the process repeats the determination in step S200.

[0029] Here, tilt photography is photography in which the optical axis OA of the imaging optical system is changed to bring the entire subject plane tilted in the direction of the optical axis into focus. Tilt-tilt photography is the opposite of tilt photography, in which only a portion of the subject plane is in focus and the rest of the plane is blurred. In other words, tilt-tilt photography is equivalent to photography in which the focal plane is tilted relative to the subject plane.

[0030] In step S201, the camera microprocessor 207 determines whether the interchangeable lens attached to the image capture device 200 is a powered TS lens. Here, a powered TS lens is a lens device that can be tilt-driven and shift-driven by an actuator within the interchangeable lens, and corresponds to the interchangeable lens 100 in this embodiment. The interchangeable lens 100 and the image capture device 200 are configured to be able to communicate with each other via their respective communication units 151 and 205, and information about the interchangeable lens 100 is sent to the image capture device 200. Based on that information, the image capture device 200 determines whether the attached interchangeable lens is a powered TS lens. If a powered TS lens is attached, the process proceeds to step S202. On the other hand, if a powered TS lens is not attached, the process proceeds to step S208, where an effect is added by image processing.

[0031] In step S202, the camera microprocessor 207 uses the effect adding means to select (determine) a method for adding a diorama-like effect. In this embodiment, the effect adding means displays three options for adding a diorama-like effect on the display unit 206: a method using image processing of the image capturing device 200, a method using tilt drive of a powered TS lens, or a method using both image processing and tilt drive. The camera microprocessor 207 can select one of the three options in response to a signal obtained from the operation unit 208 by a user operating the operation unit 208.

[0032] Next, in step S203, the camera microprocessor 207 branches the operation depending on the effect adding means selected in step S202. If a method using both image processing and tilt drive is selected, the operation proceeds to step S204. If a method using tilt drive is selected, the operation proceeds to step S206. If a method using image processing is selected, the operation proceeds to step S208.

[0033] If "both image processing and tilt drive" is selected in the effect adding means, in step S204, the camera microprocessor 207 adds an effect by image processing in response to a user operation. FIG. 4 is an explanatory diagram of the display screen of the display unit 206 at this time. A display for manipulating the area to be focused, as shown in FIG. 4, is displayed on the display unit 206, and the user adjusts the area to be focused in accordance with the display. In this embodiment, the direction (vertical, horizontal) of the area to be focused shown in FIG. 4(1), the width of the area shown in FIG. 4(2), and the position of the area shown in FIG. 4(3) can all be changed by a user operation.

[0034] Next, in step S205, if the area to be focused on is determined by the user's operation (if the effect is determined), the process proceeds to step S206. On the other hand, if the area to be focused on is not determined, the process returns to step S204, and the user's operation for adjustment continues.

[0035] If "tilt drive" is selected by the effect adding means, or if "both image processing and tilt drive" is selected and the image processing effect is determined, the process proceeds to step S206. In step S206, similar to step S204, a display for manipulating the area to be focused, as shown in FIG. 4, is displayed on the display unit 206, and the user adjusts the area to be focused according to the display. In this embodiment, the direction (vertical, horizontal) of the area to be focused shown in FIG. 4(1), the width of the area shown in FIG. 4(2), and the position of the area shown in FIG. 4(3) can all be changed by user operation.

[0036] Here, the focus position is adjusted by moving the tilt position. Depending on the tilt drive direction, the entire screen may be in focus. For this reason, defocus information for the entire screen is used to determine the direction for reverse tilt.

[0037] 5 and 6 are diagrams showing the relationship between the subject, the imaging system 10, and the focal plane. When the imaging system 10 and the subject have a positional relationship as shown in FIG. 5, the defocus information indicates that the lower side of the screen is in front focus and the upper side of the screen is in back focus. In this case, the tilt drive direction is determined so that the lower side of the screen is more front-focused and the upper side of the screen is more back-focused. As a result, the relationship between the subject and the focal plane is as shown in FIG. 6, and an image can be obtained in which the area other than the center of the screen where the focus is achieved is largely blurred. In this embodiment, the tilt drive direction may be determined by user operation without using defocus information.

[0038] 2, if the area to be focused on is determined by the user's operation (if the effect is determined), the process proceeds to step S210. On the other hand, if the area to be focused on has not been determined, the process returns to step S206.

[0039] If an interchangeable lens other than a powered TS lens is attached to the imaging device 200, or if a method using "image processing" is selected as the effect adding means, the process proceeds to step S208.

[0040] In step S208, as in step S204, a display for manipulating the area to be focused, as shown in Fig. 4, is displayed on the display unit 206, and the user adjusts the area to be focused in accordance with the display. In this embodiment, the orientation (vertical and horizontal) of the area to be focused shown in Fig. 4(1), the width of the area shown in Fig. 4(2), and the position of the area shown in Fig. 4(3) can all be changed by user operation. Note that, as in step S204, the image processing in step S208 is performed with the first lens 102 and the second lens 103 of the interchangeable lens 100 fixed.

[0041] Next, in step S209, if the area to be focused on is decided by the user's operation (if the effect is decided), the process proceeds to step S210. On the other hand, if the area to be focused on has not been decided, the process returns to step S208.

[0042] In step S210, the camera microprocessor 207 determines whether or not a release operation (operation of a release button included in the operation unit 208) has been performed by the user. If a release operation has not been performed, step S210 is repeated. On the other hand, if a release operation has been performed, the process proceeds to step S211. In step S211, the camera microprocessor 207 performs an image capture operation and stores the captured image in the storage unit 204. This completes the process.

[0043] According to this embodiment, in order to obtain a "diorama-style" effect, the user can select a method for adding the effect (effect adding means), and can easily add the effect by simply operating according to the displayed content. [Example]

[0044] Next, processing of the imaging system 10 in the second embodiment will be described with reference to Fig. 3. Fig. 3 is a flowchart showing processing of the imaging system 10 in the second embodiment. Note that steps S300, S301, and S303 to S312 in Fig. 3 are the same as steps S200 to S211 in Fig. 2, respectively, and therefore common explanations will be omitted.

[0045] In step S302, the camera microprocessor 207 drives the tilt position of the interchangeable lens 100 to the initial position (initial position, reference position). Here, the initial position is the position where the lens principal plane is parallel to the imaging plane (the surface of the image sensor 201), as shown in FIG. 5. At this position, there is no tilt effect, and the focal plane is parallel to the imaging plane. By returning the tilt position to the initial position before adding the effect, it becomes easier to grasp the image after the effect has been added.

[0046] Actual tilt driving is performed, for example, as follows. Communication is performed from the imaging device 200 to the interchangeable lens 100 via the communication units 205 and 151, and the camera microprocessor 207 sends a command to the interchangeable lens 100 to drive the tilt position to the initial position. The lens microprocessor 150 calculates the drive amounts of the first lens 102 and the second lens 103 required to move them from their current positions to their initial positions. The lens microprocessor 150 then drives the first lens 102 and the second lens 103 by the calculated drive amounts via the drive circuits 131 to 134 and the stepping motors 121 to 124. After driving is completed, the interchangeable lens 100 notifies the imaging device 200 that driving has been completed via the communication units 151 and 205. This completes the operation of driving the tilt position to the initial position.

[0047] According to this embodiment, before the diorama-like effect is added, the tilt position of the interchangeable lens 100 is driven to the initial position where no tilt effect is applied. This makes it possible to check the image before the effect is applied, and then add the effect from there, making it easier to get closer to the intended image.

[0048] According to each embodiment, the user can determine the means (method) for obtaining the tilt effect. Therefore, for example, it is possible to use the tilt mechanism of an interchangeable lens to add a tilt effect to an image that has already been given a tilt effect, and then use image processing technology to create an image representation. In addition, when adding effects using two means (methods), for example, by adding a horizontal tilt effect using tilt drive and a vertical effect using image processing, it is possible to obtain an image in which only the area where the horizontal and vertical directions intersect is in focus.

[0049] (Other Examples) The present invention can also be realized by supplying a program that realizes one or more functions of the above-described embodiments to a system or device via a network or a storage medium, and having one or more processors in the computer of the system or device read and execute the program. It can also be realized by a circuit (e.g., ASIC) that realizes one or more functions.

[0050] According to each embodiment, it is possible to provide an imaging device, a lens device, an imaging system, a control method for the imaging device and the lens device, and a program that enable a user to obtain an intended image with a simple operation.

[0051] The disclosure of each embodiment includes the following configurations and methods. (Configuration 1) An imaging device to which a lens device that can be tilted by an actuator can be attached and detached, an image processing unit that applies an effect simulating reverse tilt photography to an image acquired through the lens device by image processing; and a control unit that determines whether to add the effect to the image at least by the image processing or by the tilt drive. (Configuration 2) The imaging device according to configuration 1, wherein the control unit determines whether to add the effect to the image only through the image processing, only through the tilt drive, or both through the image processing and the tilt drive. (Configuration 3) The control unit If it is determined that the effect is to be added only by the image processing, the effect is added by the image processing of the image processing unit while the optical element of the lens device is fixed; When it is determined that the effect is to be added only by the tilt drive, the tilt drive is performed without performing the image processing; The imaging device according to configuration 2, characterized in that when it is determined that the effect is to be added in both the image processing and the tilt drive, the effect is added in one of the image processing or the tilt drive, and then the effect is added in the other of the image processing or the tilt drive. (Configuration 4) The imaging device according to configuration 2, wherein when the control unit determines to add the effect in both the image processing and the tilt driving, the control unit adds the effect in the image processing and then adds the effect in the tilt driving. (Configuration 5) 5. The imaging device according to any one of configurations 1 to 4, wherein the control unit moves a tilt position of the lens device to a position where a lens principal surface of the lens device is parallel to an imaging surface before the effect is applied. (Configuration 6) further comprising an operation unit operable by a user, 6. The imaging device according to any one of configurations 1 to 5, wherein the control unit determines a method for adding the effect in response to a signal obtained from the operation unit. (Configuration 7) A lens device detachably attached to an imaging device having an image processing unit that adds an effect simulating tilt-tilt photography by image processing, an optical element; an actuator that moves the optical element to perform tilt drive; a control unit that controls the actuator, the imaging device determines whether to add the effect to the image acquired through the lens device by at least the image processing or by at least the tilt drive; The control unit controls the actuator to perform the tilt drive when it receives a signal from the imaging device instructing it to perform the tilt drive to add the effect. (Configuration 8) a lens device capable of being tilted by an actuator; An imaging system comprising the imaging device according to any one of configurations 1 to 6. (Method 1) A control method for an imaging device to which a lens device capable of being tilted by an actuator can be attached or detached, comprising: a determining step of determining whether to add an effect simulating reverse tilt photography to an image acquired through the lens device by at least image processing, or to add the effect by at least the tilt drive; and adding the effect using the method determined in the determining step. (Method 2) A control method for a lens device detachable from an imaging device having an image processing unit that adds an effect simulating tilt-tilt photography by image processing, comprising: a receiving step of receiving, from the imaging device, a signal instructing tilt driving by moving an optical element to add the effect; a control step of controlling an actuator to perform the tilt drive in response to the signal, A control method for a lens device, characterized in that the signal is received in accordance with a decision made by the imaging device as to whether to add the effect at least by the image processing or at least by the tilt drive to an image acquired by the imaging device through the lens device. (Configuration 9) A program that causes a computer to execute the method for controlling an imaging device according to Method 1. (Configuration 10) A program that causes a computer to execute the lens device control method described in Method 2.

[0052] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist of the present invention.

[0053] In each embodiment, the camera microprocessor 207 selects one of three methods to add the effect simulating tilt photography: by image processing only, by tilt drive only, or by both image processing and tilt drive. However, the present invention is not limited to these. The camera microprocessor 207 only needs to be able to select whether to add the effect by image processing or by tilt drive.

[0054] In each embodiment, when the camera microprocessor 207 determines to add an effect in both image processing and tilt driving, it adds the effect in image processing and then in tilt driving, but the order of image processing and tilt driving may be reversed. That is, the camera microprocessor 207 may add an effect in either image processing or tilt driving, and then add the effect in the other of image processing or tilt driving. [Explanation of symbols]

[0055] 100 Interchangeable lenses (lens devices) 121, 122, 123, 124 Stepping motor (actuator) 200 Imaging device 203 Signal processing circuit (image processing section) 207 Camera microprocessor (control unit)

Claims

1. An imaging device to which a lens device that can be tilted by an actuator can be attached and detached, an image processing unit that applies a tilt-back effect to an image acquired through the lens device by image processing; and a control unit that, when the lens device is attached to the imaging device, determines whether to add the tilt effect to the image at least by the image processing or whether to add the tilt effect to the image at least by the tilt drive.

2. 2. The imaging device according to claim 1, wherein the tilt-shift effect is an effect of blurring an area other than a certain area in the image.

3. 2. The imaging device according to claim 1, wherein the control unit determines whether to add the tilt-tilt effect to the image only by the image processing, only by the tilt driving, or by both the image processing and the tilt driving.

4. The control unit when it is determined that the tilt-tilt effect is to be added only by the image processing, the tilt-tilt effect is added by the image processing of the image processing unit while the optical element of the lens device is fixed; When it is determined that the reverse tilt effect is to be added by the tilt drive alone, the tilt drive is performed without performing the image processing; 4. The imaging device according to claim 3, wherein, when it is determined that the tilt effect is to be applied in both the image processing and the tilt drive, the tilt effect is applied in one of the image processing or the tilt drive, and then the tilt effect is applied in the other of the image processing or the tilt drive.

5. 4. The imaging device according to claim 3, wherein, when the control unit determines that the tilt effect is to be applied in both the image processing and the tilt driving, the control unit applies the tilt effect in the image processing and then applies the tilt effect in the tilt driving.

6. 2. The imaging device according to claim 1, wherein the control unit moves the tilt position of the lens device to a position where a lens principal surface of the lens device is parallel to an imaging surface before the tilt effect is applied.

7. further comprising an operation unit operable by a user, 2. The imaging apparatus according to claim 1, wherein the control unit determines a method for applying the tilt-shift effect in response to a signal obtained from the operation unit.

8. A lens device detachable from an imaging device having an image processing unit that adds a tilt-forward effect by image processing, an optical element; an actuator that moves the optical element to perform tilt drive; a control unit that controls the actuator, When the lens device is attached to the imaging device, the imaging device determines whether to add the tilt-tilt effect to an image acquired through the lens device at least by the image processing or by the tilt drive; The control unit controls the actuator to perform the tilt drive when it receives a signal from the imaging device instructing it to perform the tilt drive to add the reverse tilt effect.

9. a lens device capable of being tilted by an actuator; An imaging system comprising the imaging device according to claim 1 .

10. A control method for an imaging device to which a lens device capable of being tilted by an actuator can be attached or detached, comprising: a determination step of determining whether to add a tilt-tilt effect to an image captured through the lens device by at least image processing or by at least the tilt drive when the lens device is attached to the imaging device; and adding the tilt-reverse effect using the method determined in the determining step.

11. A control method for a lens device detachable from an imaging device having an image processing unit that adds a tilt-forward effect by image processing, comprising: a receiving step of receiving, from the imaging device, a signal instructing tilt driving by moving an optical element to add the tilt-reverse effect; a control step of controlling an actuator to perform the tilt drive in response to the signal, a control method for a lens device, characterized in that, when the lens device is attached to the imaging device, the signal is received in accordance with a decision made by the imaging device as to whether to add the tilt effect at least by the image processing or whether to add the tilt effect at least by the tilt drive to an image acquired by the imaging device via the lens device.

12. A program causing a computer to execute the method for controlling an imaging device according to claim 10.

13. A program for causing a computer to execute the lens apparatus control method according to claim 11.

Images