Shift lens splicing device and method for performing tilt shift, vertical shift, and horizontal shift axis splicing using the same

Abstract

The present invention relates to the field of photography and videography, and in particular to a shift lens splice device and a method for performing oblique shift and vertical and horizontal shift axis splices using the same. The shift lens splice device comprises a fixed portion and an opening and closing portion connected to each other; the fixed portion and the opening and closing portion are used to clamp and support a swinging assembly of a shift lens, and the bottom of the fixed portion has a horizontal connection portion and an oblique connection portion for connecting with a camera bracket or a camera pan head; when the oblique connection portion is connected with the camera bracket or the camera pan head, the lens body portion can be obliquely moved relative to the lens optical lens portion through the shift assembly, so that the body can be moved along an "X"-shaped trajectory, and the body can maintain a horizontal or vertical shooting posture through a bayonet assembly, and moving the body in this way can seamlessly connect images at different shift positions into a rectangular image with a wider field of view.

Description

Technical Field

[0001] The invention relates to the technical field of photography and videography, and in particular to a shift lens splicing device and a method for performing oblique shifting, vertical shifting and horizontal shifting by using the device. Background Art

[0002] Currently, tilt-shift lenses are used in ordinary interchangeable lens cameras and are widely used in architectural and interior photography. Figure 1 , Figure 2 and Figure 3 As shown, a mainstream tilt-shift lens today is divided into four parts from front to back: a lens assembly 16, a swing assembly 15, a shift assembly 14, and a bayonet assembly 13. Except for the lens assembly, the other three parts do not include optical lenses. The shift assembly includes a front shift group 1402 and a rear shift group 1403; by adjusting the shift knob 1401, the front shift group and the rear shift group can slide parallel to an axis on a plane; the front shift group is rotationally connected to the swing assembly in front of it, and the rotation is usually in one direction of clockwise or counterclockwise, and because the cable inside the lens needs to transmit information between the lens assembly and the camera body, the rotation stroke between the front shift group and the swing assembly in front of it is usually limited (usually 90°); the rear shift group is rotationally connected to the bayonet assembly, and the rotation can usually be rotated by a certain angle in both clockwise and counterclockwise directions (usually -90° to +90°). When in use, the shift lens is mounted on the camera, the camera body 17 is fixed on a tripod, the body bayonet 1701 is connected to the bayonet assembly, and the lens assembly is driven to move by the shift front group. When photographing high-rise buildings, the camera can be kept in a horizontal position, and the image of the scenery above can be captured by moving the lens assembly upward, so as to avoid the vertical lines in the space from converging on the photo due to the tilt of the camera. The ability to rotate between the shift rear group and the bayonet assembly from -90° to 90° can change the sliding direction of the shift front group and the two front components connected thereto, so that they can move up and down, left and right, or diagonally at any angle.

[0003] In the prior art, there is a technical camera with a back shift. The technical camera is a photographic device specially used for photographing buildings and indoor spaces. It is a special body with a shift function, which includes a shift front group and a shift rear group. The shift front group has a lens card plate connected to the lens, and the shift rear group has a back card plate connected to the imaging device (such as a digital back or a film back). The shift front group and the shift rear group can slide parallel to each other in the x and y axes, so there is no need to rotate the parts to achieve up and down movement, left and right movement, or oblique movement at any angle. The shift front group usually has a connecting seat connected to a tripod or a pan head, so the lens connected to the shift front group is actually fixedly connected to the tripod, and the imaging device is moved by the shift rear group. The lens is connected to the imaging device through an independent external cable. When shooting high-rise buildings, the purpose of intercepting the image of the scenery above is achieved by moving the imaging device downward, avoiding the vertical lines in the space from converging on the photo due to tilting the camera, and avoiding the change of the viewpoint caused by moving the optical lens of the lens.

[0004] The difference in the use effect between the tilt-shift lens and the camera with back-shift technology: The camera with back-shift technology has the lens position fixed, and the relative shift with the lens is achieved by changing the position of the imaging device. Since the viewpoint position is determined by the position of the optical lens rather than the position of the camera body, the viewpoint position does not change before and after the shift. In other words, the relative position relationship of the objects in the photo - that is, the perspective of the photo - is consistent before and after the shift. The images before and after the shift can be regarded as images captured at different positions in the imaging circle of an unchanged lens. This is helpful for composition and can seamlessly connect images at different shift positions into an image with a wider field of view.

[0005] Lens shift is to fix the camera and change the position of the lens assembly to achieve relative displacement with the camera imaging element. Since the viewpoint position depends on the position of the optical lens rather than the position of the camera body, the viewpoint position changes before and after the shift, that is, the relative position relationship of the objects in the photo changes before and after the shift. This is not only easy to produce unexpected changes in the composition adjustment, but also when trying to connect the images of different shift positions into an image with a wider field of view, the overlapping parts cannot be completely aligned - objects at different distances from the lens in the two photos before and after the shift cannot be aligned at the same time.

[0006] When switching between horizontal and vertical shooting, the lens shift fixes the body, so you can only rotate the gimbal or change the installation angle of the camera on the gimbal using the L-plate attached to the camera.

[0007] Therefore, the existing technology using lens shift has the problem that the field of view cannot be expanded by shifting the lens during shooting, and the switching between horizontal and vertical camera positions is inconvenient. Summary of the invention

[0008] 1. Technical issues to be resolved

[0009] The technical problem to be solved by the present invention is to provide a shift lens splicing device and a method for performing horizontal, vertical and diagonal shift splicing using the same, so as to solve the problems of inconvenience in switching between horizontal and vertical positions and inability to perform horizontal, vertical and diagonal shift splicing in existing solutions of ordinary cameras with shift lenses.

[0010] (II) Technical solution

[0011] In order to solve the above technical problems, the present invention provides a shift lens connecting device, comprising a fixed part and an opening and closing part connected to each other; the fixed part and the opening and closing part are used to clamp and support the swing assembly of the shift lens, the bottom of the fixed part has a horizontal connecting part for connecting to a camera bracket or a camera pan head, and the bottom of the fixed part has an inclined connecting part for connecting to a camera bracket or a camera pan head.

[0012] Wherein, the angle between the base surface of the inclined connection part and the base surface of the horizontal connection part is 45°.

[0013] The fixing portion and the opening and closing portion are circumferentially butted against each other, the first end of the fixing portion is hinged to the first end of the opening and closing portion, and the second end of the fixing portion is connected to the second end of the opening and closing portion via a locking member.

[0014] Among them, the side of the horizontal connection part is a dovetail rail to cooperate with the dovetail groove on the camera bracket or the camera pan head; the side of the inclined connection part is a dovetail rail to cooperate with the dovetail groove on the camera bracket or the camera pan head; during installation, the horizontal connection part or the inclined connection part is fastened to the camera bracket or the camera pan head through the fasteners on the camera bracket or the camera pan head.

[0015] It also includes a level meter arranged on the fixed part or the opening and closing part and parallel to the base surface of the horizontal connecting part, and a level meter arranged on the fixed part or the opening and closing part and parallel to the base surface of the inclined connecting part.

[0016] Wherein, the first end of the fixing portion is hinged to the first end of the opening and closing portion via an opening and closing shaft, and the opening and closing shaft is a damping shaft.

[0017] It also includes a skateboard, the side of the skateboard is a dovetail rail to cooperate with the dovetail groove on the camera bracket or the camera gimbal, the dovetail rail of the skateboard and the dovetail rail of the horizontal connecting part are perpendicular to each other, the skateboard is connected to the horizontal connecting part by screws, and the fixing part is connected to the camera bracket or the camera gimbal through the skateboard.

[0018] The invention also includes an adapter which is arranged between the fixing part and / or the opening and closing part and the swinging assembly, so that the lens adapter ring is adapted to the tilt-shift lens.

[0019] Wherein, a detachable bracket extending forward is also included above the opening and closing portion.

[0020] Another aspect of the present invention provides a method for performing tilt-shift lens splicing using the above-mentioned shift lens splicing device, comprising the following steps:

[0021] S1, installing a tilt-shift lens connecting piece device on the swing assembly of the tilt-shift lens, and connecting the inclined connecting part of the fixing part to a camera bracket or a camera gimbal;

[0022] S2. Use a level gauge parallel to the base surface of the tilt connection part to adjust the tilt-shift lens joint device to an accurate 45-degree tilt.

[0023] S3, rotating the bayonet assembly relative to the shift assembly to rotate the camera body, rotating the camera body to a horizontal or vertical position according to an electronic level built into the camera body or a level attached to the camera body, shifting the camera body along the current shift track to a first side of the shift track through the shift assembly, and taking a first photo;

[0024] S4, shifting the camera body along the current shift track to the second side of the shift track by using the shift assembly, and taking a second photo;

[0025] S5, rotating the shift assembly 90 degrees so that the shift direction is rotated 90 degrees, rotating the bayonet assembly relative to the shift assembly to rotate the camera body, and rotating the camera body to a horizontal or vertical position (consistent with S3) according to the electronic level built into the camera body or the level attached to the camera body during the rotation, and taking a third photo;

[0026] S6. Shift the camera body along the shift track toward the first side of the shift track through the shift assembly, and take the fourth photo. The stitching and shooting is completed.

[0027] Another aspect of the present invention provides a method for performing vertical shift lens splicing using the above-mentioned shift lens splicing device, comprising the following steps:

[0028] S1, installing a tilt-shift lens connector on a swing assembly of the tilt-shift lens, and connecting the horizontal connection portion of the fixed portion to a camera bracket or a camera gimbal;

[0029] S2, placing the camera in a horizontal or vertical position as required, rotating the bayonet assembly relative to the shift assembly to switch the camera between the horizontal and vertical positions; vertically shifting the camera body along the shift track to the first side of the shift track through the shift assembly, and taking a first photo;

[0030] S3. The camera body is vertically shifted along the shift track to the second side of the shift track by using the shift assembly, and a second photo is taken. The stitching and shooting is completed.

[0031] Another aspect of the present invention provides a method for performing horizontal shift lens splicing using the above-mentioned shift lens splicing device, comprising the following steps:

[0032] S1, installing a tilt-shift lens connector on a swing assembly of the tilt-shift lens, and connecting the horizontal connection portion of the fixed portion to a camera bracket or a camera gimbal;

[0033] S2, rotating the shift assembly 90 degrees to rotate the shift direction 90 degrees;

[0034] S3, placing the camera in a horizontal or vertical position as required, rotating the bayonet assembly relative to the shift assembly to switch the camera between the horizontal and vertical positions, shifting the camera body laterally along the shift track to a first side of the shift track through the shift assembly, and taking a first photo;

[0035] S4. The camera body is laterally shifted along the shift track to the second side of the shift track by using the shift assembly, and a second photo is taken. The stitching and shooting is completed.

[0036] (III) Beneficial effects

[0037] The above technical scheme of the present invention has the following advantages: in the shift lens joint device provided by the present invention, the opening and closing part is connected to the fixing part, the fixing part is connected to the camera bracket or the pan head, and the opening and closing part and the fixing part together clamp and support the swinging assembly of the camera moving lens, so that not only the optical lens part of the lens is kept stationary relative to the camera bracket or the pan head through the fixing part, or the relative position relationship is kept unchanged, but also the movement direction of the shift rear group relative to the optical lens part of the lens can be controlled by the rotation between the shift front group and the swinging assembly, so that the camera can be moved in different directions, and the bayonet assembly part can make the body rotate around the shift rear group, so that the horizontal and vertical positions of the camera body can be adjusted when the camera body moves in various moving directions; because the viewpoint position depends on the position of the optical lens rather than the body position, the viewpoint position does not change before and after the shift, that is, the relative position relationship of the objects in the photo (that is, the perspective of the photo) is consistent before and after the shift, and the camera body can be adjusted in the horizontal and vertical positions when the camera body moves in various moving directions. The image after shooting can be regarded as images captured at different positions in the imaging circle of an unchanged lens. The cooperation method of the above-mentioned fixed part and the camera in the present application makes use of this point, which is not only helpful for composition, but also can seamlessly connect the images at different shift positions into an image with a wide field of view. For example, when shooting high-rise buildings, the purpose of capturing the image of the scenery above is achieved by moving the imaging device downward, avoiding the change of the viewpoint caused by moving the optical lens of the lens; in particular, the bottom of the fixed part has an inclined connecting part for connecting to the camera bracket or the camera gimbal. When the inclined connecting part is connected to the camera bracket or the camera gimbal, the camera body part (imaging device) can be obliquely moved (displaced) relative to the optical lens part of the lens through the shift assembly. In this way, the body can be moved according to an "X"-shaped trajectory, and the body can maintain a horizontal or vertical shooting posture through the bayonet assembly. Moving the body in this way can seamlessly connect the images at different shift positions into a rectangular image with a wider field of view. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of the structure of a tilt-shift lens;

[0039] Figure 2 It is a schematic diagram of the movement of various components of the lens shift for a fixed camera;

[0040] Figure 3 Schematic diagram of the movement of the components that move the camera body to fix the swing assembly

[0041] Figure 4 It is a schematic diagram of the assembly structure of the shift lens splicing device of the present invention;

[0042] Figure 5 It is a structural schematic diagram of the film joining device of the tilt-shift lens of the present invention;

[0043] Figure 6It is a structural schematic diagram of the opening and closing part of the shift lens splicing device of the present invention when it is in an open state;

[0044] Figure 7 It is a schematic structural diagram of the buckling of the shift lens connecting device and the swing assembly of the present invention;

[0045] Figure 8 It is a schematic diagram of the structure of the shift lens splicing device of the present invention after the slide plate is installed;

[0046] Fig. 9 It is a flow chart of a method for performing horizontal and oblique shifting and splicing of films by using a shift lens splicing device according to the present invention;

[0047] Fig.10 It is a schematic diagram of the splicing effect of horizontal and oblique shift splices by using the shift lens splicing device of the present invention;

[0048] Fig.11 The present invention is a flow chart of a method for performing horizontal camera vertical shift splicing by utilizing a shift lens splicing device.

[0049] Fig.12 The present invention is a flow chart of a method for performing vertical shift lens splicing by utilizing a shift lens splicing device.

[0050] Fig.13 The present invention is a flow chart of a method for horizontally shifting and splicing a lens in the left and right directions by using a shift lens splicing device.

[0051] Fig.14 The present invention is a flow chart of a method for performing left-right shift lens splicing in a vertical position by using a shift lens splicing device.

[0052] In the figure: 1. fixing part; 2. opening and closing part; 3. locking member; 4. bracket; 5. horizontal connection part; 6. inclined connection part; 7. slide plate; 8. screw; 9. first level; 10. second level; 11. third level; 12. fourth level; 13. bayonet assembly; 14. shift assembly; 15. swing assembly; 16. lens assembly; 17. body; 1401. shift knob; 1402. shift front group; 1403; shift rear group; 1701. body bayonet. DETAILED DESCRIPTION

[0053] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0054] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] like Figure 1-8 As shown, the shift lens splice device provided by the present invention comprises a fixed portion 1 and an opening and closing portion 2 connected to each other; the fixed portion 1 and the opening and closing portion 2 are used to clamp and support the swing assembly 15 of the shift lens, the bottom of the fixed portion 1 has a horizontal connection portion 5 for connecting to a camera bracket or a camera head, and the bottom of the fixed portion 1 has an inclined connection portion 6 for connecting to a camera bracket or a camera head. The fixed portion 1 and the opening and closing portion 2 of the shift lens splice device are connected and matched to form a ring structure,

[0057] In the above embodiment, the opening and closing part 2 is connected to the fixing part 1, and the fixing part 1 is connected to the camera bracket or the pan-tilt head. The opening and closing part 2 and the fixing part 1 together clamp and support the swing assembly 15 of the camera moving lens, which not only makes the optical lens part of the lens remain stationary relative to the camera bracket or the pan-tilt head through the fixing part 1, or keeps the relative position relationship unchanged, but also uses the rotation between the shift front group 1403 and the swing assembly 15 to control the moving direction of the shift rear group 1402 relative to the optical lens part of the lens, so that the camera can be moved in different directions, and the bayonet assembly 13 can make the body 17 rotate around the shift rear group 1402, so that the camera body 17 can be adjusted when moving in various directions. horizontal and vertical positions; since the viewpoint position depends on the position of the optical lens rather than the position of the body 17, the viewpoint position does not change before and after the shift, that is, the relative position relationship of the objects in the photo (that is, the perspective of the photo) is consistent before and after the shift, and the images before and after the shift can be regarded as images of different positions captured in the imaging circle of an unchanged lens. The cooperation method of the above-mentioned fixed part 1 and the camera in the present application makes use of this point, which is helpful for composition and can seamlessly connect the images of different shift positions into an image with a wide field of view. For example, when shooting high-rise buildings, the purpose of capturing the image of the scenery above can be achieved by moving the imaging device downward, avoiding the change of viewpoint caused by moving the optical lens of the lens.

[0058] In particular, the bottom of the fixing portion 1 has an inclined connection portion 6 for connecting to a camera bracket or a camera head. When the inclined connection portion is connected to the camera bracket or the camera head, the camera body 17 (imaging device) can be obliquely moved (shifted) relative to the lens optical lens portion through the shift assembly 14. In this way, the body 17 can be moved along an "X"-shaped trajectory, and the body 17 can maintain a horizontal or vertical shooting posture through the bayonet assembly 13. Moving the body 17 in this way can seamlessly connect images at different shift positions into a rectangular image with a wider field of view.

[0059] Specifically, the angle between the base surface of the inclined connection part 6 and the base surface of the horizontal connection part 5 is 45°, and this angle of 45° is exactly half of the rotatable range (90°) of the lens swing assembly relative to the shift assembly. In this way, when the lens swing assembly is fixed and the camera head or bracket is connected using the inclined connection part, the lens shift assembly can be shifted obliquely within a range of 45° on both sides, and the shift trajectory is X-shaped.

[0060] Specifically, the fixing part 1 and the opening and closing part 2 are butted against each other in a circumferential manner, the first end of the fixing part 1 is hinged to the first end of the opening and closing part 2, the second end of the fixing part 1 is connected to the second end of the opening and closing part 2 via a locking piece 3, the locking piece 3 is opened, the opening and closing part 2 is opened, the lens can be loaded or removed, the locking piece 3 is tightened, the fixing part 1 and the opening and closing part 2 are butted against each other, and the entire connecting ring is easy to assemble and disassemble and is firmly fixed.

[0061] Preferably, the side of the horizontal connection part 5 is a dovetail rail to match the dovetail groove on the camera bracket or camera gimbal; the side of the inclined connection part 6 is a dovetail rail to match the dovetail groove on the camera bracket or camera gimbal. During installation, the horizontal connection part 5 and the inclined connection part are fastened to the camera bracket or camera gimbal through fasteners on the camera bracket or camera gimbal.

[0062] Preferably, it also includes a second level 10 and a third level 11 (the second level 10 adjusts the left and right level, and the third level 11 adjusts the front and back level) arranged on the fixing part 1 or the opening and closing part 2 and parallel to the base surface of the horizontal connection part 5, so as to adjust the level of the lens when shooting in the forward direction, and a first level 9 arranged on the fixing part 1 or the opening and closing part 2 and parallel to the base surface of the inclined connection part, so as to adjust the level of the lens when shooting in an oblique direction. It also includes a fourth level 12, which is arranged on the side of the fixing part 1 and is used to adjust the level of the lens when the camera is shooting directly upward or directly downward.

[0063] Preferably, the first end of the fixed part 1 is hinged to the first end of the opening and closing part 2 through an opening and closing axis, and the opening and closing axis is a damping axis. The opening and closing part 2 can rotate and open relative to the fixed part 1, and the opening and closing axis is a damping axis. When the lens is installed, the opening and closing part 2 will not move at will to affect the installation, and the lens fixing is more convenient.

[0064] Furthermore, it also includes a slide plate 7, the side of the slide plate 7 is a dovetail rail to cooperate with the dovetail groove on the camera bracket or the camera gimbal, the dovetail rail of the slide plate 7 and the dovetail rail of the horizontal connecting part 5 are perpendicular to each other, the slide plate 7 is connected to the horizontal connecting part 5 by a screw 8, and the fixing part 1 is connected to the camera bracket or the camera gimbal through the slide plate 7, so that the front and rear distance between the fixing part 1 and the camera bracket or the gimbal can be adjusted.

[0065] Preferably, it also includes an adapter disposed between the fixing portion 1 and / or the opening and closing portion 2 and the swing assembly 15, so that the lens adapter ring is adapted to the tilt-shift lens and is fixed firmly.

[0066] Preferably, the opening and closing portion 2 further includes a detachable bracket 4 extending forward. The bracket 4 can meet the glare shielding requirements by placing a visor on the bracket 4 and moving it forward and backward to meet the glare shielding requirements under different shift amounts.

[0067] like Fig. 9 and 10 As shown, combined with Figure 3 As shown, another invention of the present invention also provides a method for tilting and splicing lenses using the above-mentioned shift lens splicing device, which is characterized by comprising the following steps:

[0068] S1, installing a tilt-shift lens connector on the swing assembly 15 of the tilt-shift lens, and connecting the inclined connecting portion 6 of the fixing portion 1 to a camera bracket or a camera gimbal;

[0069] S2, using a level gauge parallel to the base surface of the tilting connection portion 6, adjust the shift lens splicing device to an accurate 45-degree tilt;

[0070] S3, rotating the bayonet assembly 13 relative to the shift assembly 14 to rotate the camera body 17, rotating the camera body 17 to a horizontal or vertical position according to an electronic level built into the camera body 17 or a level attached to the camera body 17, shifting the camera body 17 along the current shift track to a first side of the shift track through the shift assembly 14, and taking a first photo;

[0071] S4, shifting the body 17 along the current shift track to the second side of the shift track through the shift assembly 14, and taking a second photo;

[0072] S5, rotating the shift assembly 14 by 90 degrees so that the shift direction is rotated by 90 degrees, rotating the bayonet assembly 13 relative to the shift assembly 14 to rotate the camera body 17, and rotating the camera body 17 to a horizontal or vertical position (consistent with S3) according to the built-in electronic level of the camera body 17 or the level attached to the camera body 17 during the rotation, and taking a third photo;

[0073] S6. Shift the body 17 along the shift track toward the first side of the shift track through the shift assembly 14, and take a fourth photo. The stitching and shooting is completed.

[0074] In the above embodiment, specifically, the posture of the camera body 17 is changed by the rotation between the shift rear group 1402 and the bayonet assembly 13 to determine horizontal or vertical shooting, and the camera body 17 is horizontal; the camera body 17 is driven to one end of the shift movement direction by the shift knob 1401 to take the first photo, and then the camera body 17 is driven to the other end of the shift movement direction by the shift knob 1401 to take another photo; the shift direction is adjusted to another oblique upward direction of the X track by the rotation between the shift front group 1403 and the swing assembly 15, and the camera body 17 is in the wrong direction at this time, and the posture of the camera body 17 is adjusted to be consistent with the previous posture (horizontal or vertical shooting posture) by the rotation between the shift rear group 1402 and the bayonet assembly 13, and the camera body 17 is horizontal, and the third photo is taken at this position; the camera body 17 is driven to the other end of the X track by the shift knob 1401, and the fourth photo is taken, and the splicing is completed ( Fig.10 It shows that the viewing range can be expanded by using the X-shaped oblique shift joint, and the dotted rectangle is the viewing range when the shift is not performed).

[0075] like Figure 11-14 As shown, another aspect of the present invention provides a method for performing vertical shift lens splicing using the above-mentioned shift lens splicing device, which is characterized by comprising the following steps:

[0076] S1. Install the shift lens joint device on the swing assembly 15 of the shift lens, and connect the horizontal connection part 5 of the fixed part 1 to the camera bracket or the camera head; at this time, the camera bracket or the head can be adjusted by a level to make the joint device level.

[0077] S2, placing the camera in a horizontal or vertical position as required, rotating the bayonet assembly 13 relative to the shift assembly 14 to switch the camera between the horizontal and vertical positions; vertically shifting the camera body 17 along the shift track to the first side of the shift track through the shift assembly 14, and taking a first photo;

[0078] S3. The body 17 is vertically shifted along the shift track to the second side of the shift track by using the shift assembly 14, and a second photo is taken. The stitching and shooting is completed.

[0079] Another aspect of the present invention provides a method for performing positive left-right direction shift lens splicing using the above-mentioned shift lens splicing device, characterized in that it includes the following steps:

[0080] S1, installing a shift lens connector on the swing assembly 15 of the shift lens, and connecting the horizontal connecting portion 5 of the fixing portion 1 to a camera bracket or a camera gimbal;

[0081] S2, rotating the shift assembly 14 90 degrees to rotate the shift direction 90 degrees;

[0082] S3, placing the camera in a horizontal or vertical position as required, rotating the bayonet assembly 13 relative to the shift assembly 14 to switch the camera between the horizontal and vertical positions, shifting the camera body 17 laterally along the shift track to the first side of the shift track through the shift assembly 14, and taking a first photo;

[0083] S4. The body 17 is laterally shifted along the shift track to the second side of the shift track by the shift assembly 14, and a second photo is taken. The stitching and shooting is completed.

[0084] In the above embodiment, the shift direction can be determined by the rotation between the front shift group 1403 and the swing assembly 15; the camera posture is changed by the rotation between the rear shift group 1402 and the bayonet assembly 13 to determine horizontal or vertical shooting; the camera body 17 connected to the bayonet assembly 13 is driven by the shift knob 1401 on the shift lens to move to an appropriate position; when the camera body 17 is exposed at two (or more than two) positions, the overlapping parts of the obtained photos can be completely aligned, so that these photos can be seamlessly spliced.

[0085] The shift lens splicing device provided by the present invention can conveniently realize the horizontal camera vertical shift, vertical camera vertical shift, horizontal camera horizontal shift, vertical camera horizontal shift, and horizontal and vertical camera diagonal movement on the widely used shift lens without changing the position of the lens assembly 16, and there is no need to tilt the pan / tilt head significantly for the diagonal movement, thereby facilitating composition and realizing seamless splicing.

[0086] Specifically, using a 36X24mm camera and a tilt-shift lens with a shift amount of 12mm, the oblique-shift stitched photos can achieve a maximum field of view and resolution of approximately 251%, which is equivalent to increasing the frame to 53X41mm, which is close to the frame of the expensive top-level medium format digital back.

[0087] By using stitching, different orthogonal shift stitching methods and oblique shift stitching methods can be applied to different scenes. By changing the shift amount and the oblique shift angle, infinite variations of the frame ratio can be achieved, rather than just the horizontal and vertical aspect ratios in the prior art. The most appropriate aspect ratio can be made for shooting targets of different spatial sizes, such as shopping malls, cinemas, high-rise buildings, etc.

[0088] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A shift lens splicing device, characterized in that: It comprises a fixed part and an opening and closing part connected to each other; the fixed part and the opening and closing part are used to clamp and support the swing component of the tilt-shift lens, the bottom of the fixed part has a horizontal connection part for connecting to a camera bracket or a camera pan head, the bottom of the fixed part has an inclined connection part for connecting to a camera bracket or a camera pan head, the angle between the base surface of the inclined connection part and the base surface of the horizontal connection part is 45°, the fixed part and the opening and closing part are circumferentially butted, the first end of the fixed part is hinged to the first end of the opening and closing part, the second end of the fixed part is connected to the second end of the opening and closing part by a locking piece, the side of the horizontal connection part is a dovetail rail to cooperate with the dovetail groove on the camera bracket or the camera pan head; the side of the inclined connection part is a dovetail rail to cooperate with the dovetail groove on the camera bracket or the camera pan head; during installation, the horizontal connection part or the inclined connection part is fastened to the camera bracket or the camera pan head by fasteners on the camera bracket or the camera pan head.

2. The shift lens splicing device according to claim 1, wherein: It also includes a level meter arranged on the fixing part or the opening and closing part and parallel to the base surface of the horizontal connecting part, and a level meter arranged on the fixing part or the opening and closing part and parallel to the base surface of the inclined connecting part.

3. The shift lens splicing device according to claim 1, wherein: The first end of the fixing portion is hinged to the first end of the opening and closing portion via an opening and closing shaft, and the opening and closing shaft is a damping shaft.

4. The shift lens splicing device according to claim 1, wherein: It also includes a skateboard, the side of the skateboard is a dovetail rail to cooperate with the dovetail groove on the camera bracket or the camera gimbal, the dovetail rail of the skateboard and the dovetail rail of the horizontal connecting part are perpendicular to each other, the skateboard is connected to the horizontal connecting part by screws, and the fixing part is connected to the camera bracket or the camera gimbal through the skateboard.

5. The shift lens splicing device according to claim 1, wherein: It also includes an adapter which is arranged between the fixing part and / or the opening and closing part and the swing assembly, so that the lens adapter ring is adapted to the tilt-shift lens.

6. The shift lens splicing device according to claim 1, wherein: A detachable bracket extending forward is also provided above the opening and closing portion.

7. A method for performing tilt-shift lens splicing using the shift lens splicing device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, installing a tilt-shift lens connecting piece device on the swing assembly of the tilt-shift lens, and connecting the inclined connecting part of the fixing part to a camera bracket or a camera gimbal; S2. Use a level gauge parallel to the base surface of the tilt connection part to adjust the tilt-shift lens joint device to an accurate 45-degree tilt. S3, rotating the bayonet assembly relative to the shift assembly to rotate the camera body, rotating the camera body to a horizontal or vertical position according to an electronic level built into the camera body or a level attached to the camera body, shifting the camera body along the current shift track to a first side of the shift track through the shift assembly, and taking a first photo; S4, shifting the camera body along the current shift track to the second side of the shift track by using the shift assembly, and taking a second photo; S5, rotating the shift assembly 90 degrees so that the shift direction is rotated 90 degrees, rotating the bayonet assembly relative to the shift assembly to rotate the camera body, and rotating the camera body to a horizontal or vertical position (consistent with S3) according to the electronic level built into the camera body or the level attached to the camera body during the rotation, and taking a third photo; S6. Shift the camera body along the shift track toward the first side of the shift track through the shift assembly, and take the fourth photo. The stitching and shooting is completed.

8. A method for performing vertical shift lens splicing using the shift lens splicing device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, installing a tilt-shift lens connecting piece device on the swing assembly of the tilt-shift lens, and connecting the horizontal connecting part of the fixing part to a camera bracket or a camera gimbal; S2, placing the camera in a horizontal or vertical position as required, rotating the bayonet assembly relative to the shift assembly to switch the camera between the horizontal and vertical positions; vertically shifting the camera body along the shift track to the first side of the shift track through the shift assembly, and taking a first photo; S3. The camera body is vertically shifted along the shift track to the second side of the shift track by using the shift assembly, and a second photo is taken. The stitching and shooting is completed.

9. A method for performing horizontal shift lens splicing using the shift lens splicing device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S2, rotating the shift assembly 90 degrees to rotate the shift direction 90 degrees; S3, placing the camera in a horizontal or vertical position as required, rotating the bayonet assembly relative to the shift assembly to switch the camera between the horizontal and vertical positions, shifting the camera body laterally along the shift track to a first side of the shift track through the shift assembly, and taking a first photo; S4. The camera body is laterally shifted along the shift track to the second side of the shift track by using the shift assembly, and a second photo is taken. The stitching and shooting is completed.

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