JP2020071398A - Imaging apparatus and interchangeable lens device - Google Patents

Abstract

To secure a shiftable amount for vibration isolation of an imaging element even when the center of an image circle of an interchangeable lens is deviated without enlarging the interchangeable lens.SOLUTION: A lens device 200 of the present invention is a lens device capable of being attached to and detached from an imaging apparatus, which can move an imaging element at the time of vibration isolation. The lens device includes: an imaging optical system 210; a storage part 227 which has stored image circle information indicating a relationship between an imaging condition and positional information of an image circle of the imaging optical system; and a transmission part 229 for transmitting at least a part of the image circle information to an imaging device 100.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an imaging device and an interchangeable lens device (hereinafter referred to as an interchangeable lens).

  2. Description of the Related Art Some image pickup apparatuses such as digital cameras and video cameras perform image stabilization by reducing an image shake by shifting an image pickup element that picks up a subject image with respect to an optical axis of an image pickup optical system. However, in the interchangeable lens type camera, the image circle diameter of the attached interchangeable lens does not have a margin for the size of the image sensor, or the center of the image circle is displaced from the center of the image sensor due to manufacturing errors of the interchangeable lens. There is a case. In such a case, a sufficient shift amount for performing good image stabilization cannot be obtained.

  Patent Document 1 discloses a method of communicating information on the center position of the image circle of the interchangeable lens to the camera and shifting the center of peripheral light amount correction in the camera. According to this method, even if the image pickup device shifts in the direction opposite to the direction in which the center position of the image circle shifts, it is possible to make the light amount drop in the shift direction side portion of the image pickup device inconspicuous.

  Further, Patent Document 2 discloses a method in which an image of a chart formed by an interchangeable lens is captured by an image sensor and the shift origin position of the image sensor is determined based on the chart image.

JP, 2016-167801, A JP, 2009-139877, A

  However, the method of shifting the center of peripheral light amount correction as disclosed in Patent Document 1 is an effective method only when the image sensor shifts within the image circle. For this reason, it is not possible to sufficiently secure the shift amount of the image sensor in the direction opposite to the direction in which the center position of the image circle is displaced. In order to secure a sufficient shift amount of the image pickup element, it is necessary to make the image circle of the interchangeable lens sufficiently large, in other words, upsize the interchangeable lens. On the other hand, if the shift origin position of the image sensor is determined after capturing the chart image as disclosed in Patent Document 2, it is necessary to capture the chart image every time a new interchangeable lens is used. ..

  Therefore, according to the present invention, even when the position of the image circle of the image pickup optical system (interchangeable lens device) is shifted, the moving range of the image pickup element can be secured during image stabilization without increasing the size of the interchangeable lens. An apparatus and an interchangeable lens are provided.

  The lens device of the present invention is a lens device that is attachable to and detachable from an image pickup device capable of moving an image pickup element during image stabilization, and includes an image pickup optical system, shooting conditions, and position information of an image circle of the image pickup optical system. And a transmission unit for transmitting at least a part of the image circle information to the image pickup apparatus, the storage unit storing the image circle information indicating the relationship.

  An image pickup apparatus according to the present invention is an image pickup apparatus in which an interchangeable lens device having an image pickup optical system is detachable, and includes an image pickup element movable in a plane intersecting an optical axis of the image pickup element, and an image pickup element for vibration isolation. At least a part of the image circle information indicating a relationship between the photographing condition and the position information of the image circle of the image pickup optical system from the interchangeable lens device, the control unit having a control unit that controls the movement of the image pickup device. Is received, and the received image circle information is used to set an initial position for image stabilization by the image sensor.

  INDUSTRIAL APPLICABILITY The accessory device and the camera system of the present invention can reduce the possibility that a defect of an element in the accessory device occurs.

The figure which shows the shiftable amount of an image sensor when the center of the image circle of an interchangeable lens has not shifted | deviated with respect to the center of an image sensor. The figure which shows the shiftable amount of an image sensor when the center of the image circle of an interchangeable lens has shifted | deviated with respect to the center of an image sensor. FIG. 3 is a diagram showing a shiftable range of the image sensor that is allowed in the case of FIG. 2. FIG. 7 is a diagram showing a shiftable range of the image sensor that is set when the center of the image circle of the interchangeable lens is displaced from the center of the image sensor in the first embodiment. 3 is a block diagram showing the configurations of the image pickup apparatus and the interchangeable lens of Embodiment 1. FIG. FIG. 6 is a diagram showing a method of holding information about an image circle in the first embodiment. 6 is a flowchart showing a process performed in the first embodiment. 9 is a flowchart showing the processing performed in the second embodiment. 9 is a flowchart showing the processing performed in the third embodiment. 9 is a flowchart showing the processing performed in the fourth embodiment. 9 is a flowchart showing the processing performed in the fifth embodiment. 6A and 6B are diagrams illustrating a shift of a zoom center according to a sixth embodiment. 16A and 16B are diagrams showing a data table of a zoom center shift amount in Embodiment 6. 10 is a flowchart showing the processing performed in the sixth embodiment. 20 is a flowchart showing the processing performed in the seventh embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 5 shows a configuration of a camera system including an image pickup apparatus (hereinafter referred to as a camera) 100 according to the first embodiment and an interchangeable lens device (hereinafter referred to as an interchangeable lens) 200 that is attachable to and detachable from the camera 100. The camera 100 may be a still camera or a video camera.

  In the camera 100, the image pickup element 101 picks up (photoelectrically converts) a subject image formed by the image pickup optical system 210 included in the interchangeable lens 200. The output signal (image pickup signal) from the image pickup element 101 is input to the image processing unit 108. The image processing unit 108 performs various image processes on the image pickup signal to generate image data. The image data is displayed on a monitor (not shown) or recorded on a recording medium (not shown).

  The image pickup element 101 can be moved in a plane orthogonal to the optical axis 210a of the image pickup optical system 210 (in a plane intersecting with it) by a shift mechanism (not shown). For example, it is possible to shift in a plane orthogonal to the optical axis 210a or rotate about the optical axis 210a as a rotation center in a plane orthogonal to the optical axis 210a. In the following description, the case where the image sensor 101 is shifted will be mainly described.

  The camera shake detection unit 105 detects a shake of the camera 100 (hereinafter, referred to as camera shake) caused by a user's hand shake or the like. The camera shake detection unit 105 includes at least one of an acceleration sensor and an angular velocity sensor, and outputs a detection signal indicating the shake amount of the camera 100 to the camera microcomputer 102.

  The camera microcomputer 102 has a function as a control unit that controls the movement of the image sensor 101. The camera microcomputer 102 calculates a shift amount of the image sensor 101 for reducing (correcting) image shake due to camera shake based on a detection signal from the camera shake detection unit 105, and gives an image stabilization instruction including the shift amount. It outputs to the sensor image stabilization control unit 103. The sensor image stabilization control unit 103 controls the actuator included in the shift mechanism in accordance with the image stabilization instruction from the camera microcomputer 102 to shift the image sensor 101 by the shift amount calculated by the camera microcomputer 102. As a result, sensor image stabilization (image shake correction) is performed.

  The camera microcomputer (control unit) 102 can communicate with the lens microcomputer 226 via the camera communication unit 106 and the lens communication unit 229 in the interchangeable lens 200.

  The attitude detection unit 104 detects the attitude of the camera 100 (hereinafter, referred to as camera attitude). Then, the detection signal indicating the camera posture is output to the camera microcomputer 102. The camera posture includes normal position, upper grip vertical position, lower grip vertical position, and upward.

  In the interchangeable lens 200, the imaging optical system 210 has a variable power lens 202, a diaphragm 202, a focus lens 203, and a vibration proof lens (optical element) 204. The zoom control unit 221 can detect the position of the variable magnification lens 202 (hereinafter, referred to as a zoom position), and changes the magnification by driving the variable magnification lens 202 according to a zoom drive command from the camera microcomputer 102. The focus control unit 223 can detect the position of the focus lens 203 (hereinafter, referred to as a focus position), and performs focus adjustment (focusing) by driving the focus lens 203 according to a focus drive command from the camera microcomputer 102. .. It should be noted that the variable power lens 201 typically shows one of the lenses that moves during zooming, and the focus lens 203 typically shows one of the lenses that moves during focusing.

  The aperture control unit 222 can detect the aperture diameter of the aperture 202 (hereinafter referred to as aperture position), and drives the aperture 202 according to the aperture drive command from the camera microcomputer 102 to adjust the light amount. The aperture control unit 222 may detect and control the aperture position continuously, or may detect and control the aperture position discontinuously in the open state, two stages (intermediate), and one stage (minimum). May be. Further, the detection of the aperture position may be performed by detecting the aperture position by using the drive amount of the drive mechanism that drives the aperture 202.

  The zoom position, the aperture position, and the focus position detected by the zoom control unit 221, the aperture control unit 222, and the focus control unit 223 are transmitted to the camera microcomputer 102. The zoom position transmitted by the zoom control unit 221 to the camera microcomputer 102 may be information on the position of the variable power lens 202 or information on the focal length corresponding to the zoom position.

  The image stabilizing lens 204 can be shifted in a direction including a component orthogonal to the optical axis 210a by a shift mechanism (not shown) at the time of image stabilization. That is, it is possible to shift within a plane orthogonal to the optical axis 210a, or to rotate about a point on the optical axis 210a as a rotation center. In the following description, the case where the anti-vibration lens 204 is shifted within the plane orthogonal to the optical axis 210a will be mainly described.

  The lens shake detection unit 228 detects the shake of the interchangeable lens 200 (hereinafter referred to as lens shake) caused by the user's hand shake or the like, and outputs a detection signal indicating the lens shake to the lens microcomputer 226.

  The lens microcomputer 226 uses the detection signal from the lens shake detection unit 228 to calculate the shift amount of the shake correction lens 204 for reducing (correcting) the image shake due to the lens shake, and the shake prevention instruction including the shift amount. Is output to the lens stabilization control unit (control unit) 224. The lens anti-vibration control unit (lens anti-vibration unit) 224 controls the movement of the anti-vibration lens 204. Specifically, the image stabilization lens 204 is driven by the calculated shift amount by controlling the actuator included in the shift mechanism according to the image stabilization instruction from the lens microcomputer 226. As a result, lens vibration isolation is performed. In the following description, the range in which the image stabilizing lens 204 can shift is referred to as the lens shiftable range.

  The lens microcomputer 226 has a function as a transmission unit that reads information such as image circle information stored in the data storage unit (storage unit) 227 and transmits the image circle information and the like to the imaging device 100.

  The data storage unit 227 stores optical information such as a zoom range (focal length variable range), a focus range (focusable distance range), and an aperture value variable range of the imaging optical system 210. The data storage unit 227 also stores information about the image circle of the imaging optical system 210 (hereinafter referred to as image circle information). In this embodiment, the image circle information includes position information of the image circle and information indicating the size of the image circle. In this embodiment, the image circle center information indicating the center position of the image circle is stored as the position information of the image circle.

  Each of the zoom ring 201a, the aperture ring 202a, and the focus ring 203a is a ring-shaped operation member that can be operated by the user. The camera microcomputer 102 determines a zoom drive command, a focus drive command, and an aperture drive command according to the operation amounts of the zoom ring 201a, the aperture ring 202a, and the focus ring 203a. Although the interchangeable lens 200 includes the zoom ring 201a, the aperture ring 202a, and the focus ring 203a in FIG. 5, the camera 100 may include these operation members.

  FIG. 1 is an ideal view in which the center 3 of the image circle 1 of the image pickup optical system 210 coincides with the center 8 of the image pickup element 2 (101) when viewed from the extending direction of the optical axis 210a (viewed in the optical axis direction). In this case, the shiftable amount 4 of the image sensor 2 is shown. In this case, the shiftable amount 4 becomes maximum regardless of which of the diagonal directions the image pickup element 2 shifts. That is, the sensor shiftable range, which is the range in which the image sensor 2 can be moved, becomes the maximum.

  2 is different from the ideal image circle 1 shown in FIG. 1 in that the image circle 5 (the center 3 ′ of the image circle) is located on the lower right side of the image sensor 2 (the center 8 of the image sensor 2) due to manufacturing error of the interchangeable lens. The state is shifted. In this state, when the image sensor 2 is shifted in the upper left direction or the lower left direction, the shiftable amount 6 is reduced as compared with the state in FIG. In the state of FIG. 2, when the image sensor 2 is shifted in the upper left direction or the lower left direction by the same shift amount 4 as shown in FIG. 1, the upper left portion and the lower left portion of the image sensor 2 are outside the image circle. Deviate to. As a result, the upper left corner and the lower left corner of the image formed by the image pickup signal become black, and the quality of the image deteriorates.

  Since the manufacturing error of the interchangeable lens is caused by the eccentricity of the optical element forming the imaging optical system 210 from the optical axis 210a, it can be caused in either direction depending on the eccentric direction of each interchangeable lens. Therefore, in order for the image sensor 2 not to deviate from the image circle regardless of which interchangeable lens is attached, as shown in FIG. 3, an effective image that does not protrude from the image circle 5 that is shifted due to a manufacturing error in the original image circle 1. Circle 7 needs to be defined. That is, it is necessary to set the inside of the effective image circle 7 as the sensor shiftable range. However, in this case, the shiftable amount of the image pickup element 2 decreases in any direction, and it is not possible to sufficiently perform the image stabilization of the sensor.

  It is not preferable to enlarge the image circle 1 at the design stage in order to enlarge the effective image circle 7, because the entire interchangeable lens becomes large. Therefore, in the interchangeable lens of the present embodiment, the image circle information is stored in advance in the data storage unit 227, that is, stored (prepared). The image circle information is obtained, for example, by measuring each individual interchangeable lens when manufacturing the interchangeable lens. For example, the displacement amount and the displacement direction of the actual center position (3 ′) of the image circle 5 with respect to the original center position (3) of the image circle 1 shown in FIG. 2 are measured by individual interchangeable lenses. Then, the vector information indicating the shift amount and the shift direction obtained by the measurement is stored in the data storage unit 227 as image circle center information indicating the actual center position of the image circle 5, that is, stored (prepared). The lens microcomputer 226 transmits the image circle information to the camera microcomputer 102.

  The camera microcomputer 102 sets the sensor shiftable range using the image circle information received from the lens microcomputer 226. That is, the camera microcomputer 102 uses the received image circle center information to shift the initial position of the image sensor 2 (hereinafter referred to as the sensor shift initial position) 9 as the origin of movement during image stabilization, as shown in FIG. To set. At this time, the camera microcomputer 102 sets the sensor shift initial position 9 so that the center 8 ′ of the image sensor 2 approaches the actual center 3 ′ of the image circle 5 when viewed from the direction of the optical axis 210a. By making the sensor shift initial position 9 coincide with the center 3'and shifting the image sensor 2 from the set sensor shift initial position 9, the same degree of shift as the ideal state shown in FIG. The possible amount 10 can be secured.

  The lens microcomputer 226 also holds image circle size information indicating the size (diameter) of the image circle as image circle information in the data storage unit 227, and also sends the image circle size information to the camera microcomputer 102. The camera microcomputer 102 of the present embodiment also uses the image circle size information to set a shiftable amount by which the image sensor 2 can be shifted to the maximum from the set initial position 9.

  FIG. 6 shows image circle center information and image circle size information stored in the data storage unit 227. In this embodiment, image circle center information, which is vector information, is stored in the data storage unit 227 as two-dimensional coordinates (shift_x, shift_y), and image circle size information is stored as a scalar quantity (circle).

  Further, in the present embodiment, the center 8 ′ and the size of the image circle 5 are set to the zoom position, the focus position, and the aperture position (open, 2 steps (intermediate), 1 step (minimum)) as the optical state of the imaging optical system 210. Change accordingly. Further, the center 8'and the size of the image circle 5 change according to the camera posture (normal position, grip upper vertical position, grip lower vertical position, upward). Therefore, in the data storage unit 227, different information is stored as the image circle center information and the image circle size information depending on the optical condition of the imaging optical system 210 and the shooting conditions such as the camera posture.

  As described above, in this embodiment, different image circle information is transmitted to the camera microcomputer 102 depending on the optical state of the image pickup optical system 210 and the camera posture. Then, the camera microcomputer 102 is caused to set the sensor shiftable range using the image circle information according to the actual optical state and the camera posture. As a result, the maximum sensor shiftable range can be set according to the usage state of the camera system.

  The processing performed by the camera microcomputer 102 and the lens microcomputer 226 in this embodiment will be described using the flowchart of FIG. The camera microcomputer 102 and the lens microcomputer 226 read out a control program which is a computer program and execute this processing according to the control program. The control program executed by the camera microcomputer 102 is stored in the data storage unit 102a (shown in FIG. 5), and the control program executed by the lens microcomputer 226 is stored in the data storage unit 227. This also applies to other embodiments described later.

  In FIG. 7, steps S501 to S506 indicate processing executed by the camera microcomputer 102, and steps S601 to S602 indicate processing executed by the lens microcomputer 226.

  In step S501, the camera microcomputer 102 transmits the image circle information (image circle center information and image circle size information) and the current position information including the current zoom position, the current focus position, and the current aperture position to the lens microcomputer. Request to 226.

  In step S601, the lens microcomputer 226 collectively transmits all the image circle information read from the data storage unit 227 to the camera microcomputer 102 in response to this transmission request.

  Subsequently, in step S602, the lens microcomputer 226 provides the camera with current position information including the current zoom position, the current focus position, and the current aperture position detected by the zoom control unit 221, the focus control unit 223, and the aperture control unit 222, respectively. It is transmitted to the microcomputer 102.

  In step S502, the camera microcomputer 102 receives all the image circle information transmitted from the lens microcomputer 226 and stores it in the data storage unit 102a. In step S503, the camera microcomputer 102 receives the current position information transmitted from the lens microcomputer 226.

  Next, in step S503, the camera microcomputer 102 detects the current camera posture through the posture detection unit 104.

  Then, in step S504, the camera microcomputer 102 reads, from the data storage unit 102a, the image circle information corresponding to the current zoom position, the current focus position, the current aperture position, and the current camera attitude, out of all the image circle information. If the image circle information corresponding to the current zoom position, the current focus position, the current aperture position, and the current camera posture is not saved in the data storage unit 102a, interpolation using the saved image circle information is performed. The necessary image circle information may be acquired by calculation or the like. Furthermore, in this step, the camera microcomputer 102 uses the read image circle information (image circle center information and image circle size information) to determine (set) the sensor shiftable range as shown in FIG. That is, the sensor shift initial position is set based on the image circle center information, and the shiftable amount of the image sensor 101 is set using the image circle size information.

  The above-described interpolation calculation may be performed based on a predetermined approximation function indicating the relationship between the current zoom position, the current focus position, the current aperture position, the current camera posture, and the center position of the image circle. .. Alternatively, the interpolation calculation may be performed based on a predetermined approximation function such as a linear function that indicates the rotation angle of each rotation ring and the center position of the image circle. In this embodiment, the rotating ring in this case is at least one of the zoom ring 201a, the aperture ring 202a, and the focus ring 203a. Although the case where the center position of the image circle is interpolated as the image circle information has been described here, the diameter of the image circle can be interpolated in the same manner.

  In step S505, the camera microcomputer 102 moves the image sensor 101 to the sensor shift initial position determined in step S504. As a result, when viewed from the optical axis direction, the center position of the image sensor 101 overlaps the center position of the image circle.

  In steps S506 and S507, the sensor image stabilization control is performed based on the instruction from the camera microcomputer 102. That is, when camera shake is detected by the camera shake detection unit 105 in step S506, the image sensor 101 is shift-driven by the sensor image stabilization control unit 103 in step S507 so as to reduce image shake caused by the detected camera shake.

  As described above, the lens microcomputer 226 determines the zoom position of the imaging optical system 210, the focus position of the imaging optical system 210, the diaphragm position of the imaging optical system 210, the shooting conditions such as the attitude of the camera 100, and the center position of the image circle. Stores information indicating the relationship. Then, the image sensor 101 is moved to the sensor shift initial position 9 of the image sensor 101 determined by the camera microcomputer 102 based on the information. As a result, according to the present embodiment, the shiftable amount of the image pickup element 101 during image stabilization can be secured even if the center of the image circle of the interchangeable lens 200 shifts without increasing the size of the interchangeable lens 200. ..

  Steps S501 to S502 and steps S601 to S602 are transmitted and received by initial communication performed when the interchangeable lens is mounted on the camera 100, for example. Note that the lens microcomputer 226 may detect the lens posture by the posture detection unit provided in the interchangeable lens 200 instead of the posture detection unit 104 provided in the camera 100. Further, the lens microcomputer 226 may perform the process of step S602 before step S601.

  Processing performed by the camera microcomputer 102 and the lens microcomputer 226 in the second embodiment will be described with reference to the flowchart of FIG. The configurations of the camera 100 and the interchangeable lens 200 of the second embodiment are the same as those of the first embodiment.

  In the first embodiment, the camera microcomputer 102 collectively receives all the image circle information from the lens microcomputer 226, and the camera microcomputer 102 corresponds to the current zoom position, current focus position, current aperture position, and current camera attitude. The case where the image circle information to be obtained is acquired has been described. On the other hand, in the present embodiment, the camera microcomputer 102 acquires image circle information corresponding to the current zoom position, current focus position, current aperture position, and current camera attitude from the lens microcomputer 226.

  In FIG. 8, steps S701 to S708 show processing executed by the camera microcomputer 102, and steps S801 to S803 show processing executed by the lens microcomputer 226.

  In step S701, the camera microcomputer 102 requests the lens microcomputer 226 to transmit image circle information (image circle center information and image circle size information).

  Subsequently, in step 702, the camera microcomputer 102 detects the camera posture through the posture detection unit 104. Then, in step S703, the camera microcomputer 102 transmits information indicating the detected camera posture to the lens microcomputer 226.

  In step S801, the lens microcomputer 226 receives the image circle information transmission request from the camera microcomputer 102 and the information indicating the camera posture.

  Next, in step S802, the lens microcomputer 226 acquires the current zoom position, the current focus position, and the current aperture position detected by the zoom control unit 221, the focus control unit 223, and the aperture control unit 222, respectively.

  Next, in step S803, the lens microcomputer 226 reads the image circle information corresponding to the current zoom position, the current focus position, the current aperture position, and the current camera attitude from the data storage unit 227, and these are read. Send to. If the lens microcomputer 226 does not store image circle information corresponding to the current zoom position, current focus position, current aperture position, and current camera posture in the data storage unit 227, the stored image is stored. The necessary image circle information may be acquired by interpolation calculation or the like using the circle information. The interpolation calculation method is as described above.

  In step S704, the camera microcomputer 102 receives the image circle information corresponding to the current zoom position, focus position, diaphragm position, and detected camera posture, which are transmitted from the lens microcomputer 226.

  After that, in steps S705 to S708, the camera microcomputer 102 determines the sensor shift possible range in the same manner as in steps S504 to S507 of the first embodiment (FIG. 7) and detects the image shake due to the camera shake. Anti-vibration control is performed.

  According to the present embodiment, the camera microcomputer 102 receives from the lens microcomputer 226 only the image circle information used for the sensor image stabilization control according to the shooting condition at that time. Therefore, in addition to the effect similar to that of the first embodiment, the required capacity of the data storage unit 102a can be reduced as compared with the case where all the image circle information is received and held in the data storage unit 102a as in the first embodiment. You can

  Note that the lens microcomputer 226 may detect the lens posture by the posture detection unit provided in the interchangeable lens 200 instead of the posture detection unit 104 provided in the camera 100. Then, image circle information corresponding to the current zoom position, focus position, aperture position, and detected lens posture may be transmitted to the camera microcomputer 102.

  The camera microcomputer 102 may perform step S701 in parallel with steps S702 and S703, or after step S702 and step S703 and before step S801. The lens microcomputer 226 may perform step S802 before step S801.

  Further, when the camera microcomputer 102 and the lens microcomputer 226 periodically communicate with each other in accordance with the vertical synchronizing signal, the lens microcomputer 226 provides an image according to the shooting condition such as the zoom position at each vertical synchronizing signal. Circle information may be sent.

  Processing performed by the camera microcomputer 102 and the lens microcomputer 226 in the third embodiment will be described with reference to the flowchart of FIG. The configurations of the camera 100 and the interchangeable lens 200 of Example 3 are the same as those of Example 1.

  In FIG. 9, in step S701, the camera microcomputer 102 transmits all image circle information (image circle center information and image circle size information) and current zoom position, current focus position and current aperture position information to the lens microcomputer. Request to 226.

  In step S1001, the lens microcomputer 226 collectively transmits all the image circle information read from the data storage unit 227 to the camera microcomputer 102 in response to the transmission request. Subsequently, in step S1002, the lens microcomputer 226 provides the camera microcomputer 102 with information about the current zoom position, the current focus position, and the current aperture position detected by the zoom control unit 221, the focus control unit 223, and the aperture control unit 222, respectively. Send to.

  In step S902, the camera microcomputer 102 receives all image circle information and stores it in the data storage unit 102a. Further, the information on the current zoom position, the current focus position, and the current aperture position transmitted from the lens microcomputer 226 is received.

  Next, in step S903, the camera microcomputer 102 detects the camera posture through the posture detection unit 104. The camera microcomputer 102 also reads from the data storage unit 102a information representing the size (for example, diagonal size) of the image sensor 101, which is stored in advance in the data storage unit 102a.

  Then, in step S904, the camera microcomputer 102 reads out, from the data storage unit 102a, image circle information corresponding to the current zoom position, the current focus position, the current aperture position, and the detected camera posture, out of all the image circle information. .. Similar to the first embodiment, the image circle information corresponding to the current zoom position, the current focus position, the current aperture position, and the detected camera posture may be acquired by interpolation calculation or the like. The interpolation calculation method is as described above. Further, is it necessary for the camera microcomputer 102 to set the sensor shiftable range and the lens shiftable range according to the deviation of the image circle by using the read image circle information and the information indicating the size of the image sensor 101? Determine (select) whether or not. If the determination result is necessary, the camera microcomputer 102 determines the sensor shiftable range and the lens shiftable range using the image circle information and the zoom position (focal length) information acquired in step S902. ..

Specifically, the relationship between the shift amount ΔY of the image sensor 101 and the image stabilization angle (camera shake angle at which image stabilization is possible) Δθ obtained thereby is as follows:
ΔY = f · tan Δθ
Is. That is, the image stabilization sensitivity changes according to the focal length. Therefore, when the image pickup optical system 210 is a telephoto system (the focal length f is long), the image stabilization angle Δθ does not increase so much even if the image pickup element 101 is shifted. In such a case, main image stabilization is performed by shifting the image stabilizing lens 204, and the lens shiftable range and the sensor shiftable range are determined so that the shift of the image sensor 101 corrects the deviation of the image circle. On the other hand, when the image pickup optical system 210 is a wide angle system (the focal length f is short), a large image stabilization angle Δθ can be obtained by shifting the image pickup element 101. In such a case, main image stabilization is performed by shifting the image sensor 101, and the sensor shiftable range and the lens shiftable range are determined so that the shift of the image stabilizing lens 204 corrects the deviation of the image circle. That is, one of the image pickup device 101 and the image stabilizing lens 204 performs main image stabilization, and the other corrects the deviation of the image circle, so that good image stabilization is performed as a whole. Distributable range is set. Correcting the shift of the image circle means reducing the shift between the initial position of the image circle and the initial position of the image sensor 101.

  As described above, when the image position on the image sensor 101 is corrected by a predetermined amount (anti-vibration control), the anti-vibration lens 204 is used to correct the image circle shift according to the focal length of the imaging optical system 210. The movement sharing ratio of the image sensor 101 is different. Specifically, when the focal length of the image pickup optical system 210 is the first length, the sensor shift initial position of the sensor shift initial position is more than when the focal length is the second length which is shorter than the first length. The shift amount (allocation ratio of the image sensor 101) is increased. On the contrary, when the focal length of the imaging optical system 210 is the first length, the shift amount of the lens shift initial position is larger than when the focal length is the second length which is shorter than the first length. The share of the image stabilizing lens 204 is reduced.

  Similarly, the image stabilization angle θ between the image stabilization lens 204 and the image sensor 101 when the image position on the image sensor 101 is corrected by a predetermined amount (anti-shake control) based on the focal length of the imaging optical system 210. Use different proportions of (anti-vibration correction angle). Specifically, when the focal length of the image pickup optical system 210 is the first length, the shift amount of the image pickup element 101 is larger than when the focal length is the second length which is shorter than the first length. Is reduced (the proportion of the image stabilization correction angle of the image stabilization lens 204 is reduced). On the contrary, when the focal length of the imaging optical system 210 is the first length, the shift amount of the image stabilizing lens 204 is smaller than that when the focal length is the second length which is shorter than the first length. Increase the value (increase the proportion of the image stabilization correction angle of the image stabilization lens 204).

  Depending on the focal length, one of the image pickup device 101 and the image stabilizing lens 204 may be used only for correcting the deviation of the image circle, and the other image stabilizing control may be performed.

  When the imaging optical system 210 is a zoom lens, it is preferable to continuously change the sharing ratio of the correction of the image circle shift and the sharing ratio of the image stabilization angle in accordance with the change of the focal length. This can prevent the position of the image on the image sensor 101 from changing discontinuously.

  In this embodiment, control of the image sensor 101 and the image stabilizing lens 204 is performed in cooperation. One of the lens microcomputer 226 and the camera microcomputer 102 may determine the share ratio of the correction of the image circle deviation and the share ratio of the image stabilization angle, and the determination contents may be transmitted to the other. Both the lens microcomputer 226 and the camera microcomputer 102 may determine these based on the same program.

  In this way, the camera microcomputer 102, which has determined the sensor shift initial position, the sensor shift possible range, and the sensor shift possible range, detects camera shake through the camera shake detection unit 105 in step S905.

  Then, in step S906, the camera microcomputer 102 shifts the image sensor 101 through the sensor image stabilization control unit 103 within the set sensor shift possible range in accordance with the detected camera shake. The camera microcomputer 102 also calculates a lens shift amount in the set lens shift possible range according to the detected camera shake, and transmits the calculated lens shift amount to the lens microcomputer 226 by including it in the lens stabilization command. In step S1003, the lens microcomputer 226 that has received this lens stabilization command shift-drives the stabilization lens 204 by the lens shift amount included in the lens stabilization command.

  According to the present embodiment, even if the center of the image circle of the interchangeable lens 200 deviates from the design value, good image stabilization can be performed by using the shift of the image sensor 101 and the shift of the image stabilization lens 204. it can.

  When the interchangeable lens 200 is not a zoom lens, the camera microcomputer 102 may request the lens microcomputer 226 to transmit information on the focal length of the image pickup optical system 210 instead of the current zoom position, and acquire the information. .. The information on the focal length may be acquired before step S904. The information indicating the focal length does not necessarily have to be the focal length information, but may be individual information (ID information) that can specify the interchangeable lens 200. The lens microcomputer 226 may transmit the individual number to the camera microcomputer 102, and the camera microcomputer 102 may acquire the focal length corresponding to the acquired individual information from the database stored in the data storage unit 102a.

  The above description is based on the assumption that the interchangeable lens 200 has the anti-vibration lens 204. However, if it is not known whether the interchangeable lens 200 has the anti-vibration lens 204, that is, whether or not it has the lens anti-vibration function, The camera 100 may inquire of the interchangeable lens 200 by communication whether or not it has a lens anti-vibration function. The communication is performed, for example, in the initial communication performed when the interchangeable lens 200 is attached to the camera 100. When the interchangeable lens 200 is notified that it has the lens anti-shake function as a result of inquiring whether it has the lens anti-shake function, the camera microcomputer 102 executes the process according to the flowchart of FIG. 9. If the interchangeable lens 200 does not respond for a predetermined time as a result of inquiring whether or not it has the lens anti-shake function, or if the interchangeable lens 200 notifies that the lens does not have the anti-shake function, the camera microcomputer 102 Performs image stabilization control using only the image sensor 101 as in the first and second embodiments.

  Next, a fourth embodiment will be described. The configurations of the camera 100 and the interchangeable lens 200 of the fourth embodiment are the same as those of the first embodiment.

  In Examples 1 to 3, the sensor shift possible range was set using the image circle information. However, the sensor shiftable amount of the image sensor 101 is limited by mechanical constraints, power constraints for driving the image sensor 101, and magnetic noise generated by shifting the image sensor 101. It Therefore, it may not be possible to simply set the sensor shiftable range using only the image circle information. In this case, it is possible to correct the shift of the center position of the image circle by shifting the shift initial position of the image stabilizing lens 204 of the interchangeable lens 200 (hereinafter referred to as the lens shift center in this embodiment). This makes it possible to optimize the anti-vibration control of each of the camera 100 and the interchangeable lens 200 while improving the optical performance of the entire camera system.

  The flowchart of FIG. 10 describes processing performed by the camera microcomputer 102 and the lens microcomputer 226 in the fourth embodiment. Here, the process will be described until the camera microcomputer 102 and the lens microcomputer 226 respectively determine the lens shift center and the sensor shift initial position (hereinafter referred to as the sensor shift center in this embodiment).

  In step S1101, the lens microcomputer 226 sets the shift amount of the sensor shift center (hereinafter, referred to as sensor shift center shift amount) from the lens individual information of the interchangeable lens 200 (image circle center information stored in the data storage unit 227). ..

  Next, in step S1102, the lens microcomputer 226 transmits the sensor shift center shift amount calculated in step S1101 to the camera microcomputer 102.

  Then, in step S1201, the camera microcomputer 102 determines whether the sensor shift center shift amount received from the lens microcomputer 226 is an allowable shift amount. The allowable shift amount of the sensor shift center is the shift amount of the sensor shift center that is sufficient for the image stabilization in the sensor shiftable range. The sensor shiftable range at this time is a mechanical constraint on the shift of the image sensor 101, a constraint due to electric power for shift driving the image sensor 101, a constraint due to the influence of magnetic noise generated by shifting the image sensor 101, and the like. Depends on

  Next, in step S1202, the camera microcomputer 102 sets an unacceptable sensor shift center shift amount (difference with the allowable shift amount) as a lens shift center shift amount (hereinafter referred to as a lens shift center shift amount). It is transmitted to the microcomputer 226. When the sensor shift center shift amount is allowable, the camera microcomputer 102 sets the lens shift center shift amount to 0 and transmits the lens shift center shift amount to the lens microcomputer 226, or does not transmit the lens shift center shift amount itself.

  In step S1103, the lens microcomputer 226 that has received the lens shift center shift amount shifts the lens shift center shifted by the lens shift center shift amount from the origin position, which is the position of the image stabilizing lens 204 when mounted on the interchangeable lens 200. decide.

  On the other hand, in step S1203, the camera microcomputer 102 also determines a sensor shift center that is shifted by an allowable sensor shift center shift amount from the original sensor shift center when there is no image circle shift. At this time, since the sensor shift center shift amount which is not allowable in the camera 100 is shared by the interchangeable lens 200 side as the lens shift center shift amount, the sensor shift center is shifted by the allowable sensor shift center shift amount in the camera 100 side. Good.

  Processing performed by the camera microcomputer 102 and processing performed by the lens microcomputer 226 in the fifth embodiment will be described using the flowchart of FIG. Specifically, the processing until the camera microcomputer 102 determines the sensor shift center (right side in FIG. 11) and the processing until the lens microcomputer 226 determines the lens shift center and the sensor shift center (left side in FIG. 11) explain. The configurations of the camera 100 and the interchangeable lens 200 of Example 5 are the same as those of Example 1.

  In step S1301, the camera microcomputer 102 calculates a sensor shift center shiftable amount by which the sensor shift center can be shifted, and sends it to the lens microcomputer 226. The camera microcomputer 102 determines the amount by which the sensor shift center can be shifted, the mechanical restrictions on the shift of the image sensor 101, the power for shifting the image sensor 101, and the influence of magnetic noise generated by shifting the image sensor 101. And so on.

  Next, in step S1401, the lens microcomputer 226 calculates the sensor shift center shift amount from the lens individual information. Further, the lens microcomputer 226 compares the calculated sensor shift center shift amount with the sensor shift center shift amount received from the camera microcomputer 102. When the sensor shift center shift amount is less than or equal to the sensor shift center shift amount, the sensor shift center shift amount is set as the fixed sensor shift center shift amount. On the other hand, when the sensor shift center shift amount is larger than the sensor shift center shift amount, the sensor shift center shift amount is set as the fixed sensor shift center shift amount.

  Next, in step S1402, the lens microcomputer 226 transmits the sensor shift center shift amount determined in step S1401 to the camera microcomputer 102.

  Then, in step S1403, the lens microcomputer 226 determines the lens shift center according to the sensor shift center shift amount determined in step S1401. Specifically, when the sensor shift center shift amount is equal to or smaller than the sensor shift center shift amount in step S1401, the original position of the image stabilizing lens 204 is left unchanged. On the other hand, when the sensor shift center shift amount is larger than the sensor shift center shift amount in step S1401, the lens shift center shifted from the original position of the image stabilizing lens 204 by the difference is determined.

  On the other hand, in step S1302, the camera microcomputer 102 determines a sensor shift center that is shifted by the sensor shift center shift amount received from the lens microcomputer 226 from the original sensor shift center when there is no image circle shift. In step S1403, the lens microcomputer 226 determines the sensor shift center shift amount in comparison with the sensor center shift amount, and therefore, the unacceptable sensor shift shift amount on the camera 100 side is not transmitted to the camera microcomputer 102.

  In the first embodiment, the center position of the image circle is changed according to the zoom position (focal length) and the countermeasure (processing) against the change is described. In the sixth embodiment, a modified example thereof will be described.

  If the center position of the image pickup device is deviated from the optical axis 210a of the image pickup optical system due to a manufacturing error or the like when the image pickup optical system is variable in magnification, as shown in FIG. A phenomenon called "zoom center shift" occurs in which the subject images 14 and 15 to be formed move with zooming. In other words, the center position of the image circle moves during zooming. The subject image 14 is a subject image at the wide-angle end, and the subject image 15 is a subject image at the telephoto end. Then, due to the shift of the zoom center (movement of the center position of the image circle), variations in the amount of light occur at the four corners of the image sensor 101, or one of the four corners protrudes outside the image circle.

  In the present embodiment, the magnitude of the zoom center shift (hereinafter, referred to as the zoom center shift amount) is expressed in the xy coordinate system as the shift amount from the center of the image sensor 101. Since the zoom center shift amount changes according to the focal length, the zoom center shift amount according to the focal length is stored in the data storage unit 227 in the interchangeable lens 200. Further, since the zoom center shift amount changes depending on the camera (or lens) posture, the zoom center shift amount according to the focal length and the camera posture may be stored in the data storage unit 227.

  Although not shown, when the attachment lens is mounted on the object side or the image plane side of the interchangeable lens 200, it is desirable to change the zoom center shift amount according to the magnification (optical characteristics) of the attachment lens. .. For example, when the magnification of the attachment lens is β, the zoom center shift amount is multiplied by β.

  FIG. 13A shows a data table of the zoom center shift amount stored in the data storage unit 227. As described above, since the zoom center shift amount changes depending on the zoom position and the camera attitude, in the data table shown in FIG. 13A, each camera attitude (ANGLE [0] to [m]) and zoom position (ZOOM [0] to The zoom center shift amount (x [1] to [n], y [1] to [n]) for each [xx]) is described.

It is also possible to calculate the zoom center shift amount Y at the zoom position x using a cubic polynomial expressed by the following equation (1).
Y = Ax ³ + Bx ² + Cx + D (1)

  A, B, C and D in the equation (1) are coefficients, and these coefficients may be stored in the data storage unit 227 as a data table as shown in FIG. 13B. Each coefficient is prepared for each of the x coordinate and the y coordinate. Further, each coefficient is prepared for each camera posture. The expression (1) is merely an example, and may be expressed by a polynomial such as a quartic or a quintic.

  The flowchart of FIG. 14 shows the processing performed by the camera microcomputer 102 and the lens microcomputer 226 in this embodiment.

  When the power of the camera 100 is turned on in step S1501, the camera microcomputer 102 detects the camera attitude through the attitude detection unit 104 in step S1502.

  Next, in step S1503, the camera microcomputer 102 causes the lens microcomputer 226 to shift the zoom center (that is, the image circle center) from the data storage unit 227 according to the current zoom position (that is, when the power is turned off last time). (Information) is requested to be read and transmitted. The lens microcomputer 226 transmits the requested zoom center shift amount to the camera microcomputer 102.

  Then, in step 1504, the camera microcomputer 102 sets the shift amount of the image sensor 101 from the zoom center shift amount received from the lens microcomputer 226. Next, in step 1505, the camera microcomputer 102 shifts the image sensor 101 by the shift amount set in step S1504. As a result, the shift of the zoom center is corrected.

  Next, in step 1506, the camera microcomputer 102 takes an image with the zoom center deviation corrected in accordance with the user's imaging instruction. Next, in step S1507, the camera microcomputer 102 determines whether or not the user has given an imaging stop (OFF) instruction. If the imaging stop instruction has not been issued, the camera microcomputer 102 proceeds to step S1508.

  In step 1508, the camera microcomputer 102 determines whether the zoom operation has been performed by the user, that is, whether the focal length has been changed. If the camera microcomputer 102 determines that the zoom operation has not been performed, the processing returns to step S1506, and if it determines that the zoom operation has been performed, the processing proceeds to step S1509.

  In step 1509, the camera microcomputer 102 detects the camera attitude through the attitude detection unit 104 and determines whether or not there is a change from the camera attitude detected in step S1502. The camera microcomputer 102 returns to step S1506 if it determines that the camera attitude has not changed, and proceeds to step S1510 if it determines that the camera attitude has changed.

  In step 1510, the camera microcomputer 102 requests the lens microcomputer 226 to transmit the zoom center shift amount according to the new zoom position and camera posture. In response to the request, the lens microcomputer 226 reads the zoom center shift amount from the data storage unit 227 and transmits it to the camera microcomputer 102. Upon receiving the zoom center shift amount, the camera microcomputer 102 returns to step S1504 and sets the shift amount of the image sensor 101 from the zoom center shift amount received in step S1510.

  If the user gives an instruction to stop imaging in step S1507, the camera microcomputer 102 proceeds to step S1511 to stop imaging, and then ends this processing.

  In the present embodiment, the camera microcomputer 102 corrects the image circle deviation according to the image circle diameter. That is, the initial position of the image sensor 101 is set so that the correction residual amount in the control of bringing the center position of the image circle close to the center position of the image sensor 101 changes according to the diameter of the image circle.

  When the image circle diameter is small (first diameter), the shiftable amount of the image sensor 101 during image blur correction becomes smaller than when the image circle diameter is large (second diameter). Therefore, when the image circle diameter is small, it is preferable that the shiftable amount be maximized by correcting the image circle shift. On the other hand, when the image circle diameter is larger than the predetermined value, the shift amount of the image pickup element 101 is large, and therefore the image circle shift does not necessarily have to be corrected.

  Therefore, in this embodiment, when the image circle is larger than a predetermined value, the image circle shift is not corrected, and when the image circle is smaller than the predetermined value, the image sensor 101 is moved to correct the image circle shift. ..

  For example, the camera microcomputer 102 executes the program shown in the flowchart of FIG. At the start of this flowchart, the initial communication between the camera 100 and the interchangeable lens device 200 is finished.

  In step S801, the camera microcomputer 102 determines whether or not at least one of the focal length and the camera posture of the image pickup optical system 210 has changed, and repeats the process of step S801 until there is a change. When at least one of the focal length and the camera orientation of the imaging optical system 210 has changed, the camera microcomputer 102 acquires image circle information corresponding to the current zoom position and camera orientation in step S802. The acquisition method is as described above in the first embodiment.

  In step S803, the camera microcomputer 102 determines whether the image circle diameter included in the image circle information is larger than a predetermined value.

  When the camera microcomputer 102 determines in step S803 that the image circle diameter is larger than the predetermined value, the process proceeds to step S804, and the camera microcomputer 102 does not change the initial position of the image sensor 101.

  When the camera microcomputer 102 determines in step S803 that the image circle diameter is smaller than the predetermined value, the process proceeds to step S805, and the camera microcomputer 102 changes the initial position of the image sensor 101 to correct the image circle deviation. .. That is, control is performed to bring the center position of the image circle, which corresponds to the current zoom position and camera posture, closer to the center position of the image sensor 101. After that, the camera microcomputer 102 returns to the step S801.

  By correcting the deviation of the image circle only when necessary, it is possible to reduce the moving time of the image sensor 101 to the sensor shift initial position.

  Note that the correction residual amount at the time of correcting the center position may be different depending on whether the image circle diameter is larger or smaller than the predetermined value. For example, when the image circle diameter is larger than the predetermined value, the correction residual amount may be larger than when the image circle diameter is smaller than the predetermined value.

  When the correction of the image circle shift is performed by moving the image stabilizing lens 204 based on the instruction from the lens microcomputer 226, the same control method as that of the image pickup element 101 can be applied.

(Other embodiments)
The present invention supplies a program that implements one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus read and execute the program. It can also be realized by the processing. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

  In each of the above-described embodiments, the case where the lens microcomputer 226 transmits information regarding the image circle in response to the transmission request from the camera microcomputer 102 has been described. However, when the interchangeable lens 200 is attached to the camera 100, the lens microcomputer 226 is described. 226 may voluntarily transmit the information about the image circle to the camera microcomputer 102.

  The image circle information stored in the data storage unit 227 does not necessarily include the size information of the image circle. If the interchangeable lens 200 included in the imaging system has a small image circle size variation and the camera microcomputer 102 can acquire the image circle size information from the individual number of the interchangeable lens 200, the interchangeable lens 200 is Only the center information of the image circle may be transmitted as the information about the image circle.

  In each of the above-described embodiments, the case where the position information of the image circle stored in the interchangeable lens 200 is the center information of the image circle has been described, but the position information of the image circle is not limited to this. For example, when the image circle has an elliptical shape, it may be information on two focal positions of the ellipse, or information on a plurality of representative positions on the outer circumference of the image circle.

  The image circle size information may be the size information of the image circle. For example, when the image circle is a circle, the image circle size information may be radius, diameter, circumference length, or the like. When the image circle is an ellipse, it may be the length of the major axis and the length of the minor axis, or the length of either the major axis and the minor axis, the ratio of the major axis to the minor axis, or the like.

  Only the case where the position information of the image circle and the size information of the image circle are different depending on the zoom position, the focus position, the aperture position of the imaging optical system 210 and the posture of the camera 100 has been described. Not limited to The data storage unit 227 may store at least information indicating the relationship between at least one parameter of the shooting condition and the position information of the image circle that differs depending on the parameter. For example, when the position information of the image circle greatly depends on the zoom position, the information stored in the data storage unit 227 is the same as the position information of the image circle at the same zoom position, and the zoom position changes. Only the information in which the position information of the image circle changes may be used.

  The image circle information stored in the data storage unit 227 may be only one image circle information (one lens shift initial position and one image circle size) per one interchangeable lens device 200. Alternatively, the information about the image circle may be different depending on at least one of the zoom position, the focus position, and the aperture position.

  The control of the anti-vibration lens 204 at the time of anti-vibration control is based on only the detection signal from the camera shake detection unit 105, or based on the new detection signal from the lens shake detection unit 228 and the detection signal from the camera shake detection unit 105. You can go. Also. The control of the image sensor 101 during the image stabilization control may be performed based on only the detection signal from the lens shake 228 or based on the new detection signal from the lens shake detection unit 228 and the detection signal from the camera shake detection unit 105. Good.

  It should be noted that in the present specification, image stabilization (also referred to as image blur correction) refers to reducing the blur of the position of the image on the image pickup element caused by the blur of the camera 100.

  The embodiments described above are merely representative examples, and various modifications and changes can be made to the embodiments when implementing the present invention.

100 camera (imaging device)
101 image sensor 102 camera microcomputer (control unit)
200 lens device 226 lens microcomputer (control unit)
229 Lens communication unit (transmitting unit)
227 data storage unit (storage unit)

Claims (30)

A lens device attachable to and detachable from an image pickup device capable of moving an image pickup device during image stabilization,
An imaging optical system,
A storage unit that stores image circle information, which indicates a relationship between shooting conditions and position information of the image circle of the imaging optical system,
A lens unit, comprising: a transmission unit that transmits at least a part of the image circle information to the imaging device.   The position information of the image circle corresponds to at least one of a zoom position of the image pickup optical system, a focus position of the image pickup optical system, a diaphragm position of the image pickup optical system, a posture of the interchangeable lens device or the image pickup device. The lens device according to claim 1, which is different. The image circle information is first image circle information, and the storage unit stores second image circle information indicating a relationship between shooting conditions and image circle size information of the imaging optical system,
The lens device according to claim 1, wherein the transmission unit transmits at least a part of the second image circle information to the imaging device.   The size information of the image circle corresponds to at least one of a zoom position of the image pickup optical system, a focus position of the image pickup optical system, a diaphragm position of the image pickup optical system, a posture of the interchangeable lens device or the image pickup device. The lens device according to claim 3, which is different.   The lens device according to claim 1, wherein the transmitting unit collectively transmits the image circle information to the imaging device.   The said transmission part transmits the positional information on the image circle corresponding to the present imaging condition among said image circle information to the said imaging device, The any one of Claim 1 thru | or 5 characterized by the above-mentioned. Lens device. The image pickup optical system includes an optical element that is movable in a direction including a component orthogonal to the optical axis of the image pickup optical system during image stabilization,
A control unit that controls the movement of the optical element during the image stabilization,
7. The lens apparatus according to claim 1, wherein the control unit moves the optical element to correct an image circle shift.   In order to correct the image circle deviation, the control unit may move the optical circle in a direction in which a position of the image circle of the image pickup optical system approaches an initial position for image stabilization by the image pickup device when viewed from the optical axis direction. The lens device according to claim 7, wherein the element is moved. The imaging optical system is an optical system having a variable focal length,
9. The lens apparatus according to claim 8, wherein the control unit changes the movement share ratio of the optical element for correcting the image circle shift according to the focal length of the imaging optical system.   When the focal length of the imaging optical system is the first distance, the control unit allocates the movement of the optical element to correct the image circle shift, as compared with the second distance that is shorter than the first distance. The lens device according to claim 9, wherein the ratio is increased. The imaging optical system is an optical system having a variable focal length, and includes an optical element movable in a direction including a component in a direction orthogonal to an optical axis of the imaging optical system at the time of image stabilization.
11. The lens device according to claim 1, wherein the control unit changes a share ratio of the image stabilization correction angle of the optical element according to a focal length of the imaging optical system. ..   When the focal length of the image pickup optical system is the first distance, the control unit reduces the share of the image stabilization correction angle of the optical element as compared with the case where the second distance is shorter than the first distance. The lens device according to claim 11, wherein: An imaging device in which an interchangeable lens device having an imaging optical system is detachable,
An image sensor movable in a plane intersecting the optical axis of the optical system,
It has a control unit for controlling the movement of the image pickup device for image stabilization,
The control unit is
From the interchangeable lens device, at least a part of the image circle information indicating the relationship between the shooting conditions and the position information of the image circle of the imaging optical system is received, and the received at least a part of the image circle information is used. An imaging device, wherein an initial position for image stabilization by the imaging device is set.   The position information of the image circle corresponds to at least one of a zoom position of the image pickup optical system, a focus position of the image pickup optical system, a diaphragm position of the image pickup optical system, a posture of the interchangeable lens device or the image pickup device. The imaging device according to claim 13, which is different. The image circle information is the first image circle information,
The control unit receives from the interchangeable lens device at least a part of second image circle information indicating a relationship between a shooting condition and size information of an image circle of the imaging optical system, and receives from the interchangeable lens device. 15. The image pickup apparatus according to claim 13, wherein a movable amount for image stabilization by the image pickup device is set using the second image circle information.   The size information of the image circle corresponds to at least one of a zoom position of the image pickup optical system, a focus position of the image pickup optical system, a diaphragm position of the image pickup optical system, a posture of the interchangeable lens device or the image pickup device. The imaging device according to claim 15, wherein the imaging device is different.   The image pickup apparatus according to claim 13, wherein the control unit receives the image circle information from the interchangeable lens apparatus in a lump.   If the image circle information received from the interchangeable lens device does not include image circle position information corresponding to the current shooting conditions, the control unit uses the image circle information received from the interchangeable lens device. The image pickup apparatus according to claim 13, wherein the image circle information received from the interchangeable lens device is acquired by performing an interpolation calculation.   The said control part receives the positional information on the said image circle corresponding to the present photography condition among said image circle information from the said interchangeable lens apparatus, The any one of Claim 13 thru | or 18 characterized by the above-mentioned. The imaging device described.   20. The control unit sets an initial position for image stabilization by the image pickup device so as to approach a position of an image circle of the image pickup optical system when viewed from the optical axis direction. The imaging device according to the item. The image pickup optical system includes an optical element that is movable in a direction including a component in a direction orthogonal to an optical axis during image stabilization,
21. The control unit changes a movement share ratio of the image pickup device for correcting an image circle shift according to a focal length of the image pickup optical system. The imaging device according to.   When the focal length of the image pickup optical system is the first distance, the control unit moves the image pickup element to correct the image circle shift, as compared with the case where the second distance is shorter than the first distance. The imaging device according to claim 21, wherein the sharing ratio is reduced. The image pickup optical system includes an optical element that is movable in a direction including a component in a direction orthogonal to an optical axis during image stabilization,
23. The image pickup according to claim 13, wherein the control unit changes the proportion of the image stabilization correction angle of the image pickup device according to the focal length of the image pickup optical system. apparatus.   In the case where the focal length of the imaging optical system is the first distance, the control unit increases the share of the image stabilization angle of the image sensor, compared to the case where the second distance is shorter than the first distance. The image pickup apparatus according to claim 23, wherein   25. The control section changes the movement share ratio of the image pickup device for correcting the image circle shift according to the size of the image circle of the image pickup optical system. The imaging device according to item 1.   When the attachment lens is arranged between the interchangeable lens and the image pickup apparatus, the control unit controls the image pickup device based on the image circle information received from the interchangeable lens and the optical characteristic of the attachment lens. The imaging device according to any one of claims 13 to 25, wherein an initial position for image stabilization is set. A method for controlling a lens device having an imaging optical system, which is attachable to and detachable from an imaging device capable of moving an imaging element during image stabilization,
A step of preparing image circle information showing a relationship between shooting conditions and position information of the image circle of the imaging optical system,
Transmitting at least a part of the image circle information to the imaging device. A method for controlling an image pickup apparatus, wherein an interchangeable lens apparatus having an image pickup optical system is detachable, and an image pickup element is moved during image stabilization.
From the interchangeable lens device, receiving at least a part of image circle information indicating a relationship between shooting conditions and position information of an image circle of the imaging optical system,
And a step of setting an initial position for image stabilization by the image sensor using the received at least part of the image circle information.   A program that is attachable to and detachable from an image pickup device capable of moving an image pickup device during image stabilization, and causes a computer of a lens device having an image pickup optical system to execute processing according to the control method of claim 27.   A control program, wherein an interchangeable lens device having an image pickup optical system is detachable, and causes a computer of an image pickup device that moves an image pickup device during image stabilization to execute a process according to the control method according to claim 28.

Images