JP4616961B2 - Image stabilization device, lens, camera and camera interchangeable lens - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention corrects the image blur caused by the shake based on the detection result of the shake detection means for detecting the shake state applied to the camera. Correction lens Have Image stabilizer, lens, camera And improvement of the interchangeable lens of the camera.
[0002]
[Prior art]
With current cameras, all the important tasks for shooting such as determining exposure and focusing are automated, so there is very little chance for people who are not familiar with camera operation to make shooting failures.
[0003]
Recently, a system for preventing camera shake applied to the camera has been studied, and there are almost no factors that cause a photographer to make a shooting mistake.
[0004]
Here, a system for preventing camera shake will be briefly described.
[0005]
Camera shake at the time of shooting is normally 1 to 12 Hz as a frequency, but as a basic idea to make it possible to take a picture with no image shake even if such camera shake occurs at the shutter release time. Therefore, it is necessary to detect the vibration of the camera due to the camera shake and to displace the correction lens in accordance with the detected value. Therefore, in order to achieve the ability to take a picture that does not cause image shake even if camera shake occurs, first, camera vibration is detected accurately, and second, optical axis displacement due to camera shake is corrected. It will be necessary.
[0006]
In principle, this vibration (camera shake) detection is performed by integrating the shake sensor that detects angular acceleration, angular velocity, angular displacement, etc., and the output signal of the shake sensor electrically or mechanically. This can be done by mounting the output means on the camera. Then, based on this detection information, a correction optical system that decenters the photographing optical axis is driven to suppress image blur.
[0007]
Here, the outline of the image stabilization system using the shake detection device will be described with reference to FIG.
[0008]
The example of FIG. 6 is a diagram of a system that suppresses image blur caused by the camera vertical shake 81p and the camera horizontal shake 81y in the direction indicated by the arrow 81. When the image shake correction device is provided in the interchangeable lens of a single-lens reflex camera, FIG.
[0009]
In the figure, reference numeral 82 denotes a lens barrel, 83p and 83y denote shake detection devices for detecting camera vertical shake vibration and camera horizontal shake vibration, respectively, and 84p and 84y indicate the respective vibration detection directions. Reference numeral 85 denotes a correction optical system (87p and 87y are coils for applying thrust to the correction optical system 85, and 86p and 86y are position detection elements for detecting the position of the correction optical system 85). The correction optical system 85 is a position control loop. Is driven with the outputs of the shake detection devices 83p and 83y as target values, and the stability on the image plane 88 is ensured.
[0010]
In addition, although the accuracy is lowered, the cost correction is achieved by eliminating the position detection of the correction optical system 85, and the open control method in which the shake correction control is performed only by the detected shake amount without providing the position control loop. Is possible.
[0011]
FIG. 7 is an exploded perspective view showing an example of an image blur correction apparatus using open control.
[0012]
In FIG. 7, 1 is a support frame for holding the correction lens, 2 is a base plate for holding the support frame 1, 3 is a first yoke, which is a magnetic body fixed to the base plate 2 with screws or the like (not shown), The winding coil is fixed to the support frame 1. Reference numeral 5 denotes a second yoke which is a magnetic body fixed to the base plate 2 with a screw or the like (not shown) so that the support frame 1 is sandwiched between the first yoke 3 and 6 is magnetically applied to the second yoke 5. Two permanent magnets that are attracted and fixed in a normal manner, and are provided with a position shifted by approximately 90 °. Reference numerals 7a to 7c denote shift pins that are press-fitted into the support frame 1 at one end and inserted into a long hole 2a provided at the base plate 2 at the other end. It is provided radially as the center. 8a to 8d are springs that elastically support the support frame 1 with respect to the base plate 2, and one is positioned by the projection 1a provided on the support frame 1, and the other is positioned by the projection 2b provided on the base plate 2. There are four locations approximately equally at 90 ° with the optical axis as the center. Since the protrusions 1a and 2b project radially from the optical axis and are provided so as to face each other on the same straight line, the springs 8 (8a to 8d) are also arranged radially from the optical axis. It becomes.
[0013]
In the assembling procedure, first, the first yoke 3 is passed through the base plate 2 through the hole and fixed with screws or the like. Next, a projection provided on a bobbin (not shown) of the winding coil 4 is inserted into a hole provided in the support frame 1, and the winding coil 4 is fixed by adhesion or the like. Next, the shift pin 7 is press-fitted into the hole provided in the support frame 1 through the long hole 2 a provided in the base plate 2. As a result, the support frame 1 is restricted from moving in the optical axis direction with respect to the base plate 2 but can be moved in directions other than the optical axis direction. Next, one of the springs 8 is attached to the protrusion 1 a provided on the support frame 1, and the other is attached to the protrusion 2 b provided on the base plate 2. As a result, the support frame 1 is held substantially at the center of the optical axis. Next, the permanent magnet 6 is magnetically attracted and fixed to the second yoke 5. Finally, the second yoke 5 is fixed to the base plate 2 with screws or the like so that the support frame 1 is sandwiched between the second yoke 5 and the first yoke 3.
[0014]
The permanent magnet 6 and the winding coil 4 are arranged to face each other. Thus, since the second yoke 5 is a magnetic body, a known closed magnetic path is formed between the first yoke 3 and the permanent magnet 6, and the winding provided in the closed magnetic path and fixed to the support frame 1. By energizing the wire coil 5, a thrust is generated, and the support frame 1 is driven by an arbitrary stroke. In addition, when the power is not supplied, the support frame 1 is held at a substantially central position by the spring 8, and the spring 8 is provided at four positions at approximately 90 ° equally, so that the performance changes even if the posture of the image blur correction device changes. There is no.
[0015]
Reference numerals 9a and 9b denote shake detection sensors that detect the shake of an optical apparatus equipped with an image shake correction apparatus. Reference numeral 10 denotes a control circuit that performs calculations based on the outputs of the shake detection sensors 9a and 9b, and calculates the drive amount of the support frame 1 (correction lens) so as to cancel out the shake detected by the shake detection sensors 9a and 9b. By energizing the winding coil 4, the support frame 1 is controlled to ensure the stability of the image plane.
[0016]
[Problems to be solved by the invention]
In the image blur correction apparatus shown in FIG. 7, the support frame 1 that holds the correction lens is held by the spring 8. When an impact is applied, the support frame 1 resonates at the resonance frequency, and the resonance amplitude can be considerably increased by the spring constant of the spring 8. There is sex.
[0017]
When shooting with a single-lens reflex camera, mirror driving and shutter driving for shooting operation are performed. When an impact caused by such driving is applied to the shake correction device, the correction lens resonates, which may adversely affect photographing.
[0018]
Since the resonance amplitude attenuates with time after the impact is applied, the influence is small when the shutter time is long, but the influence becomes large when the shutter time is short.
[0019]
In addition, if the spring constant is increased, the resonance amplitude is also reduced. However, since it is necessary to drive the correction lens against the spring during shake correction, increasing the spring constant increases current consumption. Can not.
[0020]
In addition, since some cameras can be photographed without performing mirror driving or shutter driving, it is necessary to optimally change the resonance countermeasure according to the mounted camera.
[0021]
(Object of invention)
The first object of the present invention is to reduce the influence of the resonance of the correction lens caused by the operation of the constituent members during the photographing operation on the photographing result. Image blur correction device Is to provide.
[0022]
The second object of the present invention is to control the correction center of the correction lens in accordance with the mounted camera, since the resonance of the correction lens caused by the operation of the constituent members during the photographing operation differs depending on the camera. An object of the present invention is to provide an interchangeable lens for a camera that can perform shake correction control.
[0023]
[Means for Solving the Problems]
In order to achieve the first object, the present invention corrects image blur caused by the shake, driven based on a shake detection unit for detecting a shake state applied to the camera, and a detection result of the shake detection unit. An image blur correction apparatus having a correction lens and a plurality of elastic members that position the correction lens at the correction center,
When exposure start is selected by an exposure start switch provided in the camera The exposure time of the camera is a predetermined time or less If The image blur correction apparatus includes a correction center changing unit that changes the correction center of the correction lens.
[0026]
In order to achieve the second object, The present invention Is a shake detection means for detecting the shake state applied to the camera. And the shake detection means A correction lens that is driven on the basis of the detection result and corrects the image blur caused by the shake; Said Interchangeable lens for a camera having a plurality of elastic members for positioning the correction lens at the correction center Because , Before exposure Correction lens A correction center changing means for changing the correction center and a correction center changing means when mounted on a first camera that does not perform mirror drive. Do not work , Mirror drive When the second camera is mounted, the correction center changing means is Make it work This is an interchangeable lens for a camera having an operation control means.
[0027]
In order to achieve the second purpose, The present invention Is a shake detection means for detecting the shake state applied to the camera. And the shake detection means A correction lens that is driven on the basis of the detection result and corrects the image blur caused by the shake; Said Interchangeable lens for a camera having a plurality of elastic members for positioning the correction lens at the correction center Because Correction center changing means for changing the correction center of the correction lens before exposure And the first When attached to the camera, the correction center changing means is Do not work , More impact of mirror drive and shutter drive than the first camera When the second camera is mounted, the correction center changing means is Make it work This is an interchangeable lens for a camera having an operation control means.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on illustrated embodiments.
[0029]
(First embodiment)
FIG. 1 is a block diagram according to a first embodiment of the present invention. In this embodiment, the present invention is applied to an interchangeable lens of a single-lens reflex camera equipped with an image blur correction device by open control shown in FIG. It is an example.
[0030]
In this embodiment, it is assumed that image blur correction is started by turning on the switch SW1 of the camera, and the correction center is changed by turning on the switch SW2, as will be described later.
[0031]
In FIG. 1, reference numeral 31 denotes a lens MPU, which controls the lens side by communicating with the camera MPU 40. Reference numeral 32 denotes a shake sensor that detects shake, and an output signal of which a DC component is cut by a high-pass filter and is input to an A / D conversion terminal of the lens MPU 31 via a low-pass filter 33 for amplification and noise removal. The A / D-converted shake angular velocity signal is subjected to calculations such as high-pass and integration, and based on the result, the correction lens is driven via the coil driver 34 to perform image shake correction.
[0032]
In addition to the above-described image blur correction control, the lens MPU 31 performs zone detection based on a signal from the zoom / focus position detector 35, and driving of the focus lens and driving of the aperture via the motor drivers 36 and 37. Yes.
[0033]
Reference numeral 38 denotes a switch (ISSW) for selecting whether or not to perform image stabilization (Image Stabilizer), and reference numeral 39 denotes a switch (A / MSW) for selecting auto focus or manual focus.
[0034]
The lens MPU 31 communicates with the camera MPU 40 to check the status (focal length, state of each switch, etc.) of the camera and lens, and to transmit driving commands such as focus and aperture.
[0035]
The release switch 41 is generally a two-stage stroke switch. The switch SW1 (not shown) is turned on by the first stroke of the release switch 41, and the switch SW2 (not shown) for release is turned on by the second stroke. It is configured to be.
[0036]
Here, a specific operation of the lens MPU 31 will be described with reference to the flowchart of FIG.
[0037]
When the lens is attached to the camera, serial communication is performed from the camera MPU 40 to the lens MPU 31, and the lens MPU 31 starts operation from step # 1.
[0038]
First, in step # 1, initial settings for lens control and image blur correction control are performed. In the next step # 2, the state of the switches 38 and 39 and the position of the zoom / focus are detected. In the subsequent step # 3, it is determined whether or not there is a focus drive request communication from the camera MPU40. If there is a focus drive request, the process proceeds to step # 4, where the drive amount of the focus lens is commanded from the camera MPU 40, and focus drive control is performed accordingly.
[0039]
If there is no focus drive request, the process proceeds to step # 5, and image blur correction operation start control such as setting of an image blur correction start flag IS_START is performed according to communication from the camera MPU 40 and the state of the switch 38. In the next step # 6, it is determined whether or not a command for stopping all driving (stopping all driving of the actuators in the lens) is received from the camera MPU40. If no operation is performed on the camera side, this all-drive stop command is transmitted from the camera MPU 40 after a while, and the process proceeds to step # 7.
[0040]
In step # 7, all drive stop control is performed. Here, the driving of all actuators is stopped, and the lens MPU 31 enters a sleep (stopped) state. Power supply to the image shake correction apparatus is also stopped. Thereafter, when any operation is performed on the camera side, the camera MPU 40 sends a communication to the lens MPU 31 to cancel the sleep state.
[0041]
During these operations, if there is a request for serial communication interruption or image blur correction control interruption by communication from the camera MPU 41, such interruption processing is performed.
[0042]
In the serial communication interrupt processing, communication data is decoded, and lens processing such as aperture driving is performed according to the decoding result. Then, by decoding the communication data, it is possible to determine the switch SW1, the switch SW2, the shutter speed, the camera model, and the like. Thereby, image blur correction can be started by turning on the switch SW1 of the camera, and the correction center position can be changed by turning on the switch SW2. This detailed operation will be described later.
[0043]
The image blur correction interrupt is a timer interrupt that occurs at regular intervals (for example, 500 μsec). Since the pitch direction (vertical direction) control and the yaw direction (horizontal direction) control are alternately performed, the sampling period in one direction in this case is 1 msec. In addition, since the control method has many parts that are the same in both directions, only one system of programs is created. Even if the control method (calculation coefficient, etc.) is the same, the result of the calculation is naturally separate data in the pitch direction and the yaw direction, so a reference address is set for each of the pitch and yaw, and the data such as the calculation result is indirectly stored in the RAM. The calculation is performed by specifying the address and switching the reference address between pitch control and yaw control.
[0044]
When an image blur correction interruption occurs during the main operation of the camera, the lens MPU 31 starts image blur correction control from step # 11 in FIG.
[0045]
First, in step # 11, the output of, for example, an angular velocity sensor which is the shake sensor 32 is A / D converted. In the next step # 12, the state of the image blur correction start flag IS_START is determined. If the image blur correction start flag IS_START is cleared, the process proceeds to step # 13. Since image blur correction is not performed here, the high-pass and integral operations are initialized, and the process proceeds to step # 16.
[0046]
On the other hand, if the image blur correction start flag is set, the process proceeds from step # 12 to step # 14, where a high-pass filter operation is performed to operate the image blur correction. The time constant is switched for 2 to 3 seconds from the start of the image blur correction, and the rising image shake is also reduced. In the subsequent step # 15, integral operation of the set characteristics is performed. This result is angular displacement data θ. When panning is performed, the integration cutoff frequency is switched according to the deflection angular displacement.
[0047]
In the next step # 16, the decentering amount (sensitivity) of the correction lens with respect to the shake angle displacement changes depending on the detection result from the zoom / focus position detector 35, that is, the zoom / focus position. Specifically, the zoom and focus positions are each divided into several zones, and the average image stabilization sensitivity (deg / mm) in each zone is read from the table data and converted into correction lens drive data SFTDRV. The calculation result is stored in a set RAM area in the lens MPU 31. In the next step # 17, it is determined whether or not the switch SW2 is turned on. If the switch SW2 is not turned on, the process immediately proceeds to step # 23.
[0048]
If the switch SW2 is ON, the process proceeds from step # 17 to step # 18, where it is determined whether the offset amount is retained. The offset amount is data for moving the correction lens to the center position when the switch SW2 is turned on. If the offset amount is retained, the process immediately proceeds to step # 22. If not, the process proceeds to step # 19, where it is determined whether or not the shutter speed is longer than a predetermined value Tv. If it is longer than the predetermined value Tv, the process proceeds to step # 20. Since the shutter speed is longer than the predetermined value Tv, the influence of the spring resonance of the correction lens is small. Therefore, the current drive data SFTDRV is held as the offset amount SFTOFST in order to perform shake correction near the center. If the shutter speed is shorter than the predetermined value Tv, the process proceeds to step # 21. Since the shutter time is shorter than the predetermined value Tv, the influence of the spring resonance of the correction lens is large. Therefore, if shake correction is performed near the center, the imaging result is adversely affected by resonance. Therefore, data obtained by adding a predetermined amount α to the current drive data SFTDRV is held as the offset amount SFTOFST.
[0049]
In the next step # 22, the final drive data SFT_DT is obtained by subtracting the offset amount SFTOFST from the current drive data SFTDRV. In the next step # 23, the result of the drive data SFT_DT is output as PWM to the port of the lens MPU 31, and the interruption ends. The output is input to the coil driver 36, the correction lens is driven by the coil and the magnet, and the image blur is corrected.
[0050]
As described above, in steps # 19 to # 21, the offset amount is changed according to the shutter time of the camera. That is, image blur correction is performed so that a spring (corresponding to the spring 8 in FIG. 7) is pressed to one of the positions centered on a position deviated from the center at the time of the shutter time that is likely to be affected by resonance due to mirror and shutter impact. Therefore, the resonance amplitude is reduced, and the adverse effect on the photographing result is prevented.
[0051]
In the first embodiment, the current drive amount data is held as the offset amount in step # 20. However, if zero is held as the offset amount, it is equivalent to not performing the correction center position change. Become.
[0052]
(Second Embodiment)
The second embodiment of the present invention assumes an example in which the operation direction of the mirror and shutter of the camera is the vertical direction (pitch direction), and shows an example in which the correction center is changed according to the shutter time only for shake correction in the pitch direction. Is. Since the circuit configuration is the same as that in FIG. 1, description thereof is omitted.
[0053]
The operation of the main part in the second embodiment of the present invention will be described with reference to the flowchart of FIG. The description of the same part as the flowchart of FIG. 3 which is the first embodiment is omitted, and only step # 31 which is an operation part peculiar to the present embodiment will be described.
[0054]
In step # 31, if the current image blur correction control is in the pitch (PITCH) direction, the process proceeds to step # 19. If the current image blur correction control is not in the pitch direction (yaw direction), the process proceeds to step # 20. ) Is not performed.
[0055]
As described above, when the image blur correction direction is pitch in step # 31, the offset amount is changed according to the shutter speed, so that the influence of resonance in the mirror / shutter drive impact direction (pitch) of the camera is reduced. In addition, in the yaw direction, image blur correction can be performed at the neutral point of the spring (near the optical axis).
[0056]
In the second embodiment, an example in which the mirror and shutter driving direction of the camera is pitch is shown, but the correction center in the yaw direction may be controlled even when the impact direction is yaw.
[0057]
(Third embodiment)
In the third embodiment of the present invention, as in the first and second embodiments described above, an image blur correction apparatus in open control as shown in FIG. 7 is applied to an interchangeable lens of a single-lens reflex camera. This shows an example in which the correction center change is not operated according to the mounted camera. Since the circuit configuration is the same as that in FIG. 1, description thereof is omitted.
[0058]
The operation of the main part in the third embodiment of the present invention will be described with reference to the flowchart of FIG. The description of the same part as the flowchart of FIG. 3 which is the first embodiment is omitted, and only step # 41 which is an operation part peculiar to the present embodiment will be described.
[0059]
In step # 14, it is determined whether the type of the attached camera is A type or B type. If it is A type, it will progress to step # 20 and will not perform offset amount change (correction center change) by shutter time. If the type is B, the process proceeds to step # 21 to change the offset amount (change the correction center).
[0060]
Here, specific examples of the camera A include a camera that does not perform mirror driving, a camera that has less impact of mirror driving or shutter driving, a digital camera, and the like that has less vibration during shooting.
[0061]
As described above, in step # 41, the type of camera to which the interchangeable lens is attached is determined, and in the case of a camera that is likely to be affected by the spring resonance of the correction lens due to an impact such as mirror driving during shooting, Since the offset amount is changed, the influence of resonance can be reduced.
[0062]
Further, the change of the offset amount may be added together with a camera model and a sequence for changing according to the shutter time as in the first and second embodiments.
[0063]
Finally, the effects in each embodiment are listed below.
[0064]
1) The correction center position of the correction lens is changed in accordance with the shutter speed of the camera, and image shake correction control is performed so as to press the spring, and the shake correction lens caused by the impact during the shooting operation such as mirror driving or shutter driving is performed. By adopting a configuration that reduces the resonance, the influence of the resonance on the imaging result can be reduced.
[0065]
2) In the case of an interchangeable lens type camera system, the amount of impact during the shooting operation differs depending on the attached camera (some types perform mirror drive, and some types of cameras have less impact from mirror drive or shutter drive). The correction center value is changed in accordance with the mounted camera, and image blur correction control is performed so as to press the spring, so that the influence of resonance on the imaging result can be reduced.
[0066]
(Correspondence between Invention and Embodiment)
Claim 1, 2 The correction center changing means and the control means according to the invention described above correspond to the lens MPU 31 in the first embodiment described above, and the operations are steps # 17 to # 22 in FIG. Claims 3 The correction center changing means and the control means of the invention described in (2) correspond to the lens MPU 31 in the second embodiment, and the operations are steps # 17 to # 22 and step # 31 in FIG. The correction center changing means and the operation control means according to the eighth and ninth aspects of the invention are the lens MPU 31 in the third embodiment, and the operations thereof are steps # 17 to # 22 and step # 41 in FIG. It is.
[0067]
(Modification)
In each of the above-described embodiments, an example of performing digital control using the lens MPU has been shown, but analog control may be used.
[0068]
In addition, the image blur correction device is incorporated in the interchangeable lens. However, the image blur correction device is not in the interchangeable lens, and may be in the form of an accessory that falls in any of the conversion lenses attached to the front of the interchangeable lens. Good.
[0069]
In each of the above embodiments, an angular velocity sensor is used as an example of a shake sensor. However, shake such as an angular acceleration sensor, an acceleration sensor, a speed sensor, an angular displacement sensor, a displacement sensor, and a method for detecting image shake itself may be used. Any device can be used as long as it can be detected.
[0070]
【The invention's effect】
As explained above, the claims 1 to 7 According to the invention described in the above, it is possible to reduce the influence of the resonance of the correction lens caused by the operation of the component member during the photographing operation on the photographing result. Image stabilization device, lens or camera Can be provided.
[0071]
According to the invention described in claim 8 or 9, since the resonance of the correction lens caused by the operation of the constituent member during the photographing operation differs depending on the camera, the control of the correction center of the correction lens according to the mounted camera. Thus, it is possible to provide an interchangeable lens for a camera that can perform optimal image blur correction control.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of an interchangeable lens for a single-lens reflex camera including an image shake correction apparatus according to a first embodiment of the present invention.
FIG. 2 is a flowchart showing a main operation in the lens MPU according to the first embodiment of the present invention.
FIG. 3 is a flowchart showing an image blur correction control operation according to the first embodiment of the present invention.
FIG. 4 is a flowchart illustrating an image blur correction control operation according to a second embodiment of the present invention.
FIG. 5 is a flowchart illustrating an image blur correction control operation according to a third embodiment of the present invention.
FIG. 6 is a diagram for explaining an image stabilization system of a general image shake correction apparatus.
7 is an exploded perspective view illustrating an example of the configuration of the image blur correction device in FIG. 6;
[Brief description of symbols]
31 Lens MPU31
32 Runout sensor
34 Coil driver for correction lens drive
40 Camera MPU

Claims (11)

A shake detection unit that detects a shake state applied to the camera, a correction lens that is driven based on a detection result of the shake detection unit, and that corrects an image shake caused by the shake, and a plurality of correction lenses that are positioned at the correction center. An image blur correction apparatus having an elastic member of
Wherein when the camera exposure time is the time following a predetermined, having a corrected center changing means for changing the corrected center of the correcting lens when the exposure start is selected by the exposure start switch are provided on the camera An image blur correction device characterized by the above.   The correction center changing unit includes a control unit that controls a correction center changing amount by the correction center changing unit, and further adding or subtracting a predetermined value to the correction center changing amount set by the correction center changing unit. The image blur correction apparatus according to claim 1, wherein an amount of correction center change is controlled.   The correction lens is driven based on a shake state in a first direction and a second direction different from the first direction, and the correction center changing unit is configured to change the first lens according to an exposure time of the camera. The image blur correction apparatus according to claim 1, wherein the correction center of the correction lens is changed only in the direction.   The image blur correction apparatus according to claim 3, wherein the first direction is a driving direction of a mirror member of the camera.   The image blur correction apparatus according to claim 3, wherein the first direction is a driving direction of a shutter member of a camera.   A lens comprising the image blur correction device according to claim 1.   A camera comprising the image blur correction apparatus according to claim 1. A shake detection unit that detects a shake state applied to the camera, a correction lens that is driven based on a detection result of the shake detection unit, and that corrects an image shake caused by the shake, and a plurality of correction lenses that are positioned at the correction center. An interchangeable lens for a camera having an elastic member of
When mounted on a correction center changing means for changing the correction center of the correction lens before exposure and a first camera that does not perform mirror driving, the correction center changing means is not operated and mirror driving is performed. And an operation control means for operating the correction center changing means when attached to the second camera. A shake detection unit that detects a shake state applied to the camera, a correction lens that is driven based on a detection result of the shake detection unit, and that corrects an image shake caused by the shake, and a plurality of correction lenses that are positioned at the correction center. An interchangeable lens for a camera having an elastic member of
A correction center changing means for changing the correction center of the correction lens before exposure, and a mirror drive from the first camera without operating the correction center changing means when mounted on the first camera; An interchangeable lens for a camera, comprising: an operation control unit that operates the correction center changing unit when mounted on a second camera having a large impact of shutter driving.   10. The interchangeable lens for a camera according to claim 8, wherein the correction center changing means changes the correction center of the correction lens when the exposure time of the camera is equal to or less than a predetermined time.   11. The correction center changing unit according to claim 8, wherein the correction center changing unit changes the correction center of the correction lens by adding or subtracting a predetermined value to a set correction center change amount. Interchangeable lens for the camera.

Images