JP2006221195A - Camera system with shake compensating function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera system with a shake compensating function where composition can be easily decided, there is no difference between the aimed composition and the composition to be actually photographed, and the variation in the composition of photographing frames when continuous photographing can be reduced or solved. <P>SOLUTION: The cameral system with a shake compensating function is provided with: shake detecting parts 1a, 1b of detecting a shake and outputting shake detection information; a shake compensating optical system 10 of compensating the shake of a photographed image; and driving parts 4, 5 of driving the shake compensating optical system in the first range. The system comprises a controlling part 3, when continuously performing first photographing and second photographing, in the case the shake compensating optical system does not lie in the second range 56a set at the inside of the first range 56b, performing control in such a manner that the driving parts drive the shake compensating optical system to the second range between the first photographing and the second photographing. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a camera system with a blur correction function for correcting a so-called camera shake in which an image is blurred by a shooting optical system when a hand holding a camera is shaken.

  Conventionally, this type of shake correction apparatus detects camera shake with a sensor, and outputs a part of a lens of a photographing optical system (hereinafter referred to as a shake correction lens) in a direction substantially perpendicular to the optical axis. Was moving accordingly. The blur correction device corrects the position of the image to be formed on the imaging plane so that the position is constant regardless of camera blur.

  Hereinafter, the operation of the conventional shake correction apparatus will be described with reference to FIG. FIG. 8 is a diagram illustrating a moving state of the photographing screen when the blur correction lens is driven by the conventional blur correction device. When the photographer half-presses the shutter button to shoot the subject 51 in the state of the shooting screen 52, the shake correction operation is started by the shake correction device. When the shake correction operation is not performed, the shooting screen 52 may be blurred in the state of the shooting screen 53. However, when the shake correction operation is continuously performed for a predetermined time, the state of the shooting screen 52 is displayed. Can be held in. In this state, when the photographer releases the shutter button without releasing the shutter, the blur correction device stops the blur correction operation, and the center of the blur correction lens is the optical axis of the entire photographing optical system (hereinafter referred to as the optical axis). It moved up (hereinafter referred to as centering operation) and prepared for the next photographing operation (for example, Patent Document 1). When the shutter button is half-pressed again by the photographer, the blur correction device moves the center of the blur correction lens from the optical axis of the lens barrel and starts blur correction.

  In the conventional blur correction device, when the blur correction operation is performed while the shutter button is half-pressed, the center of the blur correction lens may be positioned at a position away from the optical axis. When shooting is performed in such a state, the center of the blur correction lens starts to move again from that position, reaches the limit of the range in which blur correction can be performed, and may not be able to perform further blur correction. . For this reason, when the photographer half-presses the shutter button and then fully presses the shutter button, the shake correction device temporarily stops the shake correction operation, performs the centering operation, and then restarts the shake correction operation. It was. After exposure by opening and closing the shutter, the shake correction apparatus ends the shake correction operation and performs a centering operation in preparation for the next shooting operation.

  As shown in FIG. 8, when the shake correction device starts the shake correction operation from the state of the shooting screen 52, the shooting screen that blurs to the state of the shooting screen 53 when the shake correction is not performed is obtained by performing the shake correction. The state of the screen 52 is maintained. If the blurring correction device performs the centering operation in this state, the photographing screen 52 suddenly changes to the state of the photographing screen 54. Therefore, when the photographer is looking at the viewfinder of a single-lens reflex camera, when the shutter button is released from the half-pressed state of the shutter button, the screen in the viewfinder that is still in the state of the shooting screen 52 due to blur correction is captured. It suddenly moves to the state of the screen 54. As described above, when blur correction is performed by a camera equipped with a blur correction device, the shooting screen suddenly changes to a composition that is not intended by the photographer, making it difficult to determine the composition. Also, if exposure is performed after the shutter button is fully pressed from the shutter button half-pressed state and the centering operation is performed by the shake correction device, a photograph with a composition that deviates from the composition intended by the photographer is taken. There was a problem that.

In a camera equipped with a continuous shooting mode, when a photographer selects a continuous shooting mode and performs shooting, the blur correction device stops the blur correction operation and performs a centering operation every time one frame is shot. For this reason, a piece having a composition such as the photographing screen 54 is photographed next to a piece having a composition such as the photographing screen 52, and photographs having different compositions are taken continuously. There was a problem that it was contrary to the photographer's intention of the composition.
Japanese Patent Laid-Open No. 8-6095

  The problem of the present invention is that the composition can be determined easily, the intended composition does not deviate from the composition that is actually photographed, and the blur correction that can reduce or eliminate the variation in composition of photographing frames during continuous shooting. It is to provide a camera system with functions.

In order to solve the above-mentioned problem, the invention of claim 1 is a blur detection unit that detects blur and outputs blur detection information, and a blur correction optical that corrects image blur of a captured image based on the blur detection information. A camera system with a blur correction function comprising a system and a drive unit that drives the blur correction optical system in a first range when the first shooting and the second shooting are performed continuously. When the blur correction optical system is not within the second range set inside the first range between the first shooting and the second shooting, the drive unit performs the blur correction optics. It has a control part which controls so that a system may be driven to the said 2nd range, It is a camera system with a blurring correction function characterized by the above-mentioned.
According to a second aspect of the present invention, in the camera system with a blur correction function according to the first aspect, the blur correction optical system is arranged between the first shooting and the second shooting when the continuous shooting is performed. In the second range, the control unit holds the position of the shake correction optical system, and is a camera system with a shake correction function.
According to a third aspect of the present invention, in the camera system with a blur correction function according to the first or second aspect, the center of the blur correction optical system and the blur are prior to the first photographing when the continuous shooting is performed. The camera system with a blur correction function is characterized in that the drive unit drives the blur correction optical system so that the optical axis of the optical system of the photographing optical system including the correction optical system coincides.
According to a fourth aspect of the present invention, in the camera system with a blur correction function according to any one of the first to third aspects, the second range is determined from the position where the blur correction optical system is stopped. A blur correction function characterized in that the center of the blur correction optical system is a range set to be smaller than a movement amount for driving to the optical axis of the entire photographing optical system including the blur correction optical system. With a camera system.

  As described above, according to the present invention, compositional deviation and compositional variation during continuous shooting can be reduced.

(First embodiment)
Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. First, a single-lens reflex camera in which a shake correction apparatus according to an embodiment of the present invention is used will be described, and an outline of the shake correction apparatus will be described. FIG. 1 is a block diagram of a shake correction apparatus according to the first embodiment of the present invention.

  As shown in FIG. 1, the shake correction apparatus mainly includes a shake correction unit 30, an exposure calculation unit 31, a main CPU 14, a shutter drive unit 25, a film winding unit 26, and the like. The blur correction unit 30 has a function of correcting blurring at the time of shooting and a function of a determination unit that determines whether blur correction is possible. The blur correction unit 30 is configured around the CPU 3.

  The CPU 3 controls various operations on the lens barrel side, for example, performs various kinds of information processing from angular velocity sensors 1a and 1b and position sensors 2a and 2b described later, and drives a blur correction lens 10 described later. Is a central processing unit for instructing the start and stop of the camera, and determining whether or not the center of the shake correction lens 10 is within a shake correction resumable range 56 described later. The CPU 3 detects vibrations caused by camera shake in the vertical and horizontal directions of the camera body and the lens barrel, respectively, detects the positions of the angular velocity sensors 1a and 1b that output the detection results, and the shake correction lens 10, The position detection sensors 2a and 2b for outputting the detection results, the drive circuit 4 to which the motor 5 for driving the shake correction lens 10 is connected, and the shake correction control is performed by the ON operation, and the shake correction control is performed by the ON operation. A blur correction control release switch 6 that is not used is connected. One motor 5 is provided for each direction in order to drive the shake correction lens 10 in the vertical direction and the horizontal direction, but one motor is omitted in FIG.

  The photographic lens system includes a first lens group 8, a focusing lens group 9, a shake correction lens 10, and a diaphragm blade 7. The blur correction lens 10 is a lens that is driven by the motor 5 in a direction substantially perpendicular to the optical axis to correct blur.

  The main CPU 14 controls various operations of the entire camera. For example, the main CPU 14 detects an operation by a photographer based on signals from a half-press switch 20 and a full-press switch 21 described later, or a subject input from a photometry circuit 11 described later. This is a central processing unit that calculates the aperture value at the shutter speed based on the brightness, the shooting distance input from the distance measuring circuit 12, the film sensitivity input from the DX reading circuit 13, and the like. The main CPU 14 is a central processing unit that generates a centering operation start signal for bringing the vibration reduction lens 10 close to the optical axis. The main CPU 14 is connected to the photometry circuit 11, the distance measurement circuit 12, the DX reading circuit 13, the shutter dial 23, and the aperture ring 24 that constitute the exposure calculation unit 31.

  The main CPU 14 further measures a shutter control circuit 15, a film winding control circuit 27, an aperture control circuit 16 that controls the opening of the aperture blade 7 of the photographing lens system, and a motor 18 that drives the focusing lens 9. A focusing control circuit 17 that controls based on a distance measurement result of the distance circuit 12, a display control circuit 19 that displays a shutter speed, an aperture value, and the like on an LCD (not shown) incorporated in the finder, for example, and a strobe image signal A strobe light emission circuit 22 that controls the light emission of the strobe, a shooting mode selection unit 32 for selecting a shooting mode, a half-press switch 20, and a full-press switch 21 are connected. The main CPU 14 is connected to the CPU 3 on the lens barrel side, and can communicate with the CPU 3 to transmit information.

  The shutter control circuit 15 is a control circuit for controlling the shutter drive unit 25. A shutter drive unit 25 for driving the shutter mechanism unit 26 is connected to the shutter control circuit 15.

  The film winding control circuit 27 is a control circuit for controlling the operation of the motor 28 in accordance with the shooting mode selected by the shooting mode selection unit 32 described later. A motor 28 for driving the film winding mechanism unit 29 is connected to the film winding control circuit 27.

  The half-push switch 11a is a switch for turning on the power of the camera or starting a series of shooting preparation operations. The half-press switch 11a is turned ON when the release switch is half-pressed, and this ON signal is input to the main CPU 14, and the main CPU 14 that has detected the ON signal causes the camera to start a series of operations.

  The full push switch 11b is a switch for starting a photographing operation such as an exposure operation of the camera. The full-press switch 11b is turned ON when the release switch is fully pressed, and this ON signal is also input to the main CPU 14, and the main CPU 14 detecting the ON signal causes the camera to start an exposure operation.

  The shooting mode selection unit 32 has a function of selecting a single frame shooting mode for shooting one frame at a time and a continuous shooting mode for shooting continuously. The shooting mode selection unit 32 includes a single shooting mode selection switch 32a that performs single frame shooting by an ON operation, and a continuous shooting mode selection switch 32b that performs continuous shooting by an ON operation.

  Next, the operation of the shake correction apparatus according to the first embodiment of the present invention will be described focusing on the operation of the CPU 3. FIG. 2 is a flowchart for explaining the operation of the shake correction apparatus according to the first embodiment of the present invention. In step (hereinafter referred to as S) 100, when a power switch of a camera body (not shown) is turned on, the power of the power supply battery is supplied to the CPU 3, and the CPU 3 and the main CPU 14 start this flow. In the following description, each step is performed by the CPU 3 unless otherwise specified.

  In S101, the main CPU 14 determines whether or not the half-press switch 20 is turned on. If the half-press switch 20 is ON, the process proceeds to S102. If the half-press switch 20 is not ON, the determination is repeated until the half-press switch 20 is turned ON.

  In S102, the CPU 3 instructs the angular velocity sensors 1a and 1b to start blur detection. The CPU 3 instructs the angular velocity sensors 1a and 1b to output the shake detection information based on the ON information of the half-press switch 20 from the main CPU 14. The angular velocity sensors 1a and 1b detect camera body and lens barrel blur and output blur detection information.

  In S103, the CPU 3 instructs the drive circuit 4 to start blur correction. The CPU 3 calculates a blur correction amount from the blur detection information from the angular velocity sensors 1a and 1b, the focal length of the photographing lens system stored in the CPU 3, and the photographing distance input to the CPU 3 from the distance measuring circuit 12. The CPU 3 calculates a drive amount of the shake correction lens 10 based on the calculated shake correction amount, and outputs a shake correction start signal to the drive circuit 4 in order to drive the motor 5. As a result, the blur correction lens 10 is driven by a predetermined amount by the drive circuit 4 and starts blur correction. The state of blur correction can be observed with a finder (not shown).

  In S104, the main CPU 14 determines whether or not the half-press switch 20 remains ON. When the half-push switch 20 is turned off, the process proceeds to S105, but when the half-push switch 20 remains turned on, the process proceeds to S110.

  In S105, the CPU 3 instructs the drive circuit 4 to stop blur correction. The CPU 3 outputs a shake correction stop signal to the drive circuit 4 based on the OFF information of the half-press switch 20 from the main CPU 14, and the motor 5 stops the shake correction lens 10. Based on the OFF information of the half-push switch 20, the main CPU 14 outputs to the CPU 3 a centering operation start signal for bringing the vibration reduction lens 10 closer to the optical axis.

  FIG. 3 is a diagram showing the blur correction resumable range and the movable range of the blur correction lens superimposed on the photographing screen. The shake correction resumable range 56 is a range in which the shake correction lens 10 can subsequently restart shake correction from the stop position of the shake correction lens 10. The blur correction resumable range 56 is greater than when the center of the blur correction lens 10 is driven to the optical axis 57 when the blur correction lens 10 is driven from the stop position of the blur correction lens 10 to the blur correction restartable range 56. It is preferable to set the movement amount of the shake correction lens 10 within a range where the movement amount can be reduced. The movable range 55 is a limit range in which the center of the shake correction lens 10 can move during the shake correction operation. When the shake correction lens 10 performs the shake correction operation, the optical axis 57 of the entire photographic optical system including the shake correction lens 10 may move on the film surface within the shake correction resumable range 56 and the movable range 55. it can.

  In S <b> 106, the CPU 3 determines whether or not the stop position of the shake correction lens 10 is within the shake correction resumable range 56. The CPU 3 instructs the position detection sensors 2a and 2b to detect the stop position of the shake correction lens 10 based on the centering operation start signal from the main CPU 14. The position detection sensors 2 a and 2 b detect the stop position of the shake correction lens 10 and output stop position detection information to the CPU 3. The CPU 3 determines whether or not the center of the blur correction lens 10 is within the blur correction resumable range 56 based on the stop position detection information from the position detection sensors 2a and 2b. If the optical axis 57 when the blur correction is stopped is within the blur correction resumable range 56, the CPU 3 determines that the blur correction may be restarted from the stop position of the blur correction lens 10, and proceeds to S107. On the other hand, when the optical axis 57 when the blur correction is stopped is within the movable range 55 and outside the blur correction resumable range 56, the CPU 3 determines that the blur correction cannot be resumed from the stop position of the blur correction lens 10. , The process proceeds to S108.

  In S <b> 107, the CPU 3 instructs the drive circuit 4 to hold the shake correction lens 10. The CPU 3 outputs a signal to the drive circuit 20 so as to hold the shake correction lens 10 at the stop position, and the motor 5 holds the shake correction lens 10 at the stop position. Then, returning to S101, the main CPU 14 determines whether or not the half-press switch 20 is turned on again.

  In S <b> 108, the CPU 3 instructs the drive circuit 4 to reset the blur correction lens 10. The CPU 3 outputs a signal to the drive circuit 20 so as to move the optical axis 57 to a circle within the blur correction resumable range 56 without performing the centering operation. The motor 5 drives the center of the blur correction lens 10 up to a circle in the blur correction resumable range 56. Then, returning to S101, the main CPU 14 determines whether or not the half-press switch 20 is turned on again.

  In S109, the main CPU 14 determines whether or not the full push switch 21 is turned on. When the full push switch 21 is turned on following the half push switch 20, the process proceeds to S110. When the full push switch 21 is turned off, the process returns to S104, and it is repeatedly determined whether the half push switch 20 is turned on. The main CPU 14 outputs, to the CPU 3, a centering operation start signal for bringing the blur correction lens 10 close to the optical axis based on the ON information of the full push switch 21.

  In S110, the CPU 3 instructs the drive circuit 4 to stop blur correction. The CPU 3 outputs a shake correction stop signal to the drive circuit 4 based on the ON information of the full push switch 21, and the drive circuit 4 temporarily stops the drive of the shake correction lens 10 by the motor 5.

  In S <b> 111, the CPU 3 determines whether or not the stop position of the shake correction lens 10 is within the shake correction resumable range 56. The CPU 3 instructs the position detection sensors 2a and 2b to detect the stop position of the shake correction lens 10 based on the centering operation start signal. Based on the stop position detection information of the position detection sensors 2a and 2b, the CPU 3 determines whether or not the stop position of the shake correction lens 10 is within the shake correction resumable range 56. When the optical axis 57 is within the blur correction resumable range 56, the blur correction can be resumed from the stop position, so the process proceeds to S112. On the other hand, when the optical axis 57 is within the movable range 55 and outside the blur correction resumable range 56, the blur correction cannot be resumed from the stop position, so the process proceeds to S113.

  In S <b> 112, the CPU 3 instructs the drive circuit 4 to hold the shake correction lens 10. The CPU 3 instructs the drive circuit 20 to hold the shake correction lens 10 at the stop position, and the motor 5 holds the shake correction lens 10 at the stop position.

  In S <b> 113, the CPU 3 instructs the drive circuit 4 to reset the blur correction lens 10. The CPU 3 instructs the drive circuit 20 to move the optical axis 57 to a circle within the blur correction resumable range 56. In S113, the motor 5 drives the center of the blur correction lens 10 up to the circle within the blur correction resumable range 56, and the process proceeds to S114.

  In S <b> 114, the CPU 3 instructs the drive circuit 4 to start blur correction. The CPU 3 instructs the drive circuit 4 to drive the shake correction lens 10 by the motor 5 based on the shake detection information from the angular velocity sensors 1a and 1b. Then, the center of the shake correction lens 10 moves from within the shake correction resumable range 56 or from the circle within the shake correction restartable range 56, and the shake correction lens 10 resumes the shake correction.

  In S115, the main CPU 14 instructs exposure. The main CPU 14 instructs the shutter control circuit 15 to drive the shutter drive unit 25, and the shutter mechanism 26 driven by the shutter drive unit 25 opens and closes the shutter to perform photographing (exposure). The CPU 3 instructs the drive circuit 4 to drive the shake correction lens 10, and the drive circuit 4 performs shake correction during exposure using the motor 5.

  In S116, the CPU 3 instructs the drive circuit 4 to stop blur correction. The CPU 3 outputs a shake correction stop signal to the drive circuit 4 to stop the drive of the motor 5, and the motor 5 stops the shake correction lens 10.

  In S117, the main CPU 14 instructs the film winding control circuit 27 to perform winding processing. The main CPU 14 instructs the film winding control circuit 27 to drive the motor 28, and the film winding mechanism 29 driven by the motor 28 winds the film. The main CPU 14 outputs to the CPU 3 a centering operation start signal for bringing the vibration reduction lens 10 closer to the optical axis.

  In S118, the main CPU 14 determines whether or not the continuous shooting mode is set. When the continuous shooting mode selection switch 32b is turned on, the main CPU 14 determines that the continuous shooting mode is selected, and proceeds to S121. If the single-frame shooting mode selection switch 32a is not in the continuous shooting mode but the single-frame shooting mode selection switch 32a is turned on, it is determined that the single-frame shooting mode is selected, and the process proceeds to S119. The CPU 3 instructs the drive circuit 4 to change the centering operation of the blur correction lens 10 based on the determination of the main CPU 14.

  In S <b> 119, the CPU 3 instructs the drive circuit 4 to reset the blur correction lens 10. The CPU 3 determines that the single frame shooting mode is selected, and instructs the drive circuit 20 to move the center of the blur correction lens 10 to the optical axis 57. The motor 5 drives the center of the blur correction lens 10 to the optical axis 57, and a series of operations ends in S120.

  In S <b> 121, the CPU 3 determines whether or not the stop position of the shake correction lens 10 is within the shake correction resumable range 56. When the optical axis 57 is within the blur correction resumable range 56, the blur correction can be resumed from the stop position, so the process proceeds to S122. On the other hand, when the optical axis 57 is within the movable range 55 but is outside the blur correction resumable range 56, the blur correction cannot be resumed from the stop position, so the process proceeds to S123.

  In S <b> 122, the CPU 3 instructs the drive circuit 4 to hold the shake correction lens 10. The CPU 3 instructs the drive circuit 20 to hold the shake correction lens 10 at the stop position, and the motor 5 holds the shake correction lens 10 at the stop position.

  In S <b> 123, the CPU 3 instructs the drive circuit 4 to reset the blur correction lens 10. The CPU 3 instructs the drive circuit 20 to move the optical axis 57 to the circle in the blur correction resumable range 56, and the motor 5 moves the center of the blur correction lens 10 to the circle in the blur correction restartable range 56. To drive.

  In S124, the main CPU 14 determines whether or not the half-press switch 20 remains ON. When the half-press switch 20 is turned OFF, the process proceeds to S126, and a series of operations is terminated in S126. When the half-press switch 20 remains on, the process proceeds to S125.

  In S125, the main CPU 14 determines whether or not the full push switch 21 is turned on. When both the half-press switch 20 and the full-press switch 21 are ON, the process returns to S114. In S114, the CPU 3 instructs the drive circuit 4 to start blur correction, and in S115, the second frame is continuously shot continuously. In S125, when the full press switch 21 is OFF, the continuous shooting mode is stopped, and the process proceeds to S126. The CPU 3 instructs the drive circuit 20 to move the center of the blur correction lens 10 to the optical axis 57, drives the center of the blur correction lens 10 to the optical axis 57 by the motor 5, and ends a series of operations. When the continuous shooting mode ends, in S118, the main CPU 14 determines whether or not it is the continuous shooting mode, and when it is the continuous shooting mode, the process proceeds to S119. In S120, the center of the vibration reduction lens 10 is moved to the optical axis 57, and the series of operations is finished.

  In the first embodiment of the present invention, when the optical axis 57 at the time of blur correction stop is not within the blur correction resumable range 56 in S106, the CPU 3 places the optical axis 57 on the circle of the blur correction restartable range 56. The drive circuit 4 is instructed to move. Therefore, when the photographer releases the half-push switch 20 while deciding the composition while looking at the viewfinder, the composition can be decided in order to minimize the moving amount of the photographing screen at that moment. The inconvenience that it is difficult can be reduced.

  In the first embodiment of the present invention, when there is no stop optical axis 57 in the shake correction resumable range 56 in S111, the center of the shake correction lens 10 is driven up to a circle in the shake correction resumable range 56. Then, the blur correction operation is restarted, and the shutter mechanism unit 26 starts the exposure operation. Therefore, the possibility that the center of the blur correction lens 10 reaches the movable range 55 during the exposure can be reduced as compared with the case where the center of the blur correction lens 10 is once driven to the optical axis 57 by the centering operation. . In addition, a photograph closer to the intended composition can be taken before exposure.

  In the first embodiment of the present invention, when the continuous shooting mode is selected in S121 and the optical axis 57 at the time of the blur correction stop is not within the blur correction resumable range 56, the blur correction lens 10 The center is driven up to a circle in the range 56 where blur correction can be resumed. Therefore, it is possible to reduce the deviation of the composition of the continuously shot photographing frames and to reduce the possibility that the center of the blur correction lens 10 reaches during the exposure to the movable limit range.

  On the other hand, when the optical axis 57 when the blur correction is stopped is within the range 56 where the blur correction can be resumed, the shooting screen does not move much and the composition is difficult to determine in order to hold the blur correction lens 10 at the stop position. Nor. In addition, since the shake correction operation is restarted from the stop position, the center of the shake correction lens 10 does not reach during the exposure to the movable limit range, and a photograph deviated from the intended composition before the exposure is taken. It is never done. Further, when the continuous shooting mode is selected, the composition of the shooting frames does not shift.

(Second Embodiment)
FIG. 4 is a diagram in which a blur correction resumable range and a movable range, which are divided into a narrow range and a wide range, are superimposed on the shooting screen. FIG. 5 is a flowchart for explaining a part of the operation of the shake correction apparatus according to the second embodiment of the present invention. FIG. 5 is a flowchart of the portion corresponding to the V portion in FIG. 2. Steps for performing the same operations as those in the first embodiment are described with the same numbers, and the operations in those steps are described. Detailed description is omitted.

  As shown in FIG. 5, in the second embodiment of the present invention, the blur correction resumable range 56 stored in the CPU 3 is divided into two stages: a narrow blur correction restartable range 56a and a wide blur correction restartable range 56b. Has been.

  Next, the operation of the shake correction apparatus according to the second embodiment of the present invention will be described focusing on the operation of the CPU 3. As shown in FIG. 4, in S118, the main CPU 14 determines whether or not the continuous shooting mode is set. If the main CPU 14 is in the continuous shooting mode, the process proceeds to S121. The process proceeds to S201. The CPU 3 instructs the drive circuit 4 to change the centering operation of the blur correction lens 10 based on the determination of the main CPU 14.

  In S121, the CPU 3 determines whether or not the stop position of the blur correction lens 10 is within the wide blur correction resumable range 56b. When the optical axis 57 is within the wide blur correction resumable range 56b, the process proceeds to S122, and the blur correction lens 10 is held by the motor 5 at the stop position. When the optical axis 57 is outside the wide blur correction resumable range 56b, the process proceeds to S123, and the CPU 3 instructs the drive circuit 20 to drive the blur correction lens 10 up to a circle in the wide blur correction resumable range 56b. .

  In S201, the CPU 3 determines whether or not the stop position of the blur correction lens 10 is within the narrow blur correction resumable range 56a. When the optical axis 57 is within the narrow blur correction resumable range 56a, the process proceeds to S202, and the blur correction lens 10 is held at the stop position. When the optical axis 57 is outside the narrow blur correction resumable range 56a, the process proceeds to S203, and the CPU 3 instructs to drive the blur correction lens 10 up to a circle in the narrow blur correction restartable range 56a.

  In the second embodiment of the present invention, when the continuous shooting mode is selected in S118 and the optical axis 57 when the blur correction is stopped is not within the blur correction resumable range 56, the blur correction lens 10 The center is driven to a circle in a wide blur correction resumable range 56b. In particular, during film winding, power consumption due to operations other than blur correction increases. However, since the movement amount of the blur correction lens 10 can be reduced, power consumption can be reduced. In addition, since it is possible to reduce the time required to move the blur correction lens 10 during continuous shooting, it is possible to reduce power consumption. Furthermore, by reducing the amount of movement of the blur correction lens 10, it is possible to place the subject at the same position as much as possible, and to reduce the compositional deviation of continuously shot frames.

(Other embodiments)
FIG. 6 is a diagram for explaining the centering operation when the single frame shooting mode or the continuous shooting mode is selected in the embodiment of the present invention. As shown in FIG. 6, when the single frame shooting mode is selected, the blur correction lens is driven by the first centering operation (◯ in the figure) before and after shooting. When the continuous shooting mode is selected, the blurring correction lens is driven by the first centering operation (○ in the figure) before the first frame and at the end of the frame, and before the second frame and subsequent frames. The image stabilization lens is driven by the second centering operation (◎ in the figure). In FIG. 6, the last frame when continuous shooting is stopped is shown as an example of the last frame when the continuous shooting mode is selected, but the same applies to the last frame during continuous shooting. It is.

  The types of the first centering operation and the second centering operation will be described below with reference to FIG. FIG. 7 is a diagram for explaining the types of centering operations in the embodiment of the present invention. FIG. 7A shows a basic pattern of the centering operation. When the stop position (× in the figure) of the shake correction lens 10 is within the shake correction resumable range 56, the shake correction lens 10 is held at the stop position (Δ in the figure). When the stop position (x in the figure) of the blur correction lens 10 is outside the blur correction resumable range 56, the blur correction lens 10 is driven to a circle within the blur correction restartable range 56 (Δ in the figure).

  As shown in FIG. 7B, a blur correction lens before and after shooting at the time of shooting one frame and before the shooting of the first frame at the time of continuous shooting and at the end of the shooting frame (hereinafter referred to as first centering operation). Drive from the 10 stop position (X in the figure) to the optical axis of the entire photographic optical system (△ in the figure), and before the second and subsequent frames during continuous shooting (hereinafter referred to as second centering operation), shake correction The lens 10 is held (Δ in the drawing) at the stop position (× in the drawing).

  As shown in FIG. 7C, in the first centering operation, when the stop position of the shake correction lens 10 is within the shake correction resumable range 56, it is held at that stop position (Δ in the figure). When the stop position (x in the figure) of the blur correction lens 10 is outside the blur correction resumable range 56, the blur correction lens 10 is driven to a circle within the blur correction restartable range 56 (Δ in the figure). In the second centering operation, the vibration reduction lens 10 is held (Δ in the drawing) at the stop position (× in the drawing).

  As shown in FIG. 7D, in the first centering operation, the camera is driven (Δ in the drawing) from the stop position (x in the drawing) of the blur correction lens 10 to the optical axis of the entire photographing optical system. In the second centering operation, when the stop position of the shake correction lens 10 is within the shake correction resumable range 56, it is held at that stop position (Δ in the figure). When the stop position (x in the figure) of the blur correction lens 10 is outside the blur correction resumable range 56, the blur correction lens 10 is driven to a circle within the blur correction restartable range 56 (Δ in the figure).

  As shown in FIG. 7E, in the first centering operation, when the stop position of the shake correction lens 10 is within the narrow shake correction resumable range 56a, it is held at that stop position (Δ in the figure). . When the stop position (x in the figure) of the blur correction lens 10 is outside the narrow blur correction resumable range 56a, the blur correction lens 10 is driven (Δ in the figure) to a circle within the narrow blur correction restartable range 56a. . In the second centering operation, when the stop position of the shake correction lens 10 is within the wide shake correction resumable range 56b, it is held at that stop position (Δ in the figure). When the stop position (x in the figure) of the blur correction lens 10 is outside the wide blur correction resumable range 56b, the blur correction lens 10 is driven (Δ in the figure) to a circle within the wide blur correction restartable range 56b. .

  In another embodiment of the present invention, by reducing the amount of movement of the blur correction lens 10, it is possible to reduce power consumption and prevent compositional deviation of continuously shot frames. On the other hand, by increasing the movement amount of the blur correction lens 10, a stroke for blur correction can be made longer. The movement amount of the blur correction lens 10 can select an appropriate centering operation at the design stage in consideration of the above factors.

  It is not limited to embodiment described above, A various deformation | transformation and change are possible, and they are also in the equivalent range of this invention. For example, the continuous shooting mode of the embodiment of the present invention may be executed by turning on both the continuous shooting mode selection switch 32b and the full-press switch 21. In this case, when both or one of the continuous shooting mode selection switch 32b and the full-press switch 21 is turned off in S118, the center of the blur correction lens 10 is moved to the optical axis 57. Further, when the blur correction resumable range 56 is divided into a narrow correction resumable range 56a and a wide correction resumable range 56b, when both the continuous shooting mode selection switch 32b and the full-press switch 21 are turned on. The center of the blur correction lens 10 can be driven to a circle within a wide blur correction resumable range 56b. On the other hand, when both or one of the continuous shooting mode selection switch 32b and the full-press switch 21 is turned off, the center of the blur correction lens 10 can be driven to a circle within a narrow blur correction resumable range 56a.

  In S119, S126, and S203, the center of the shake correction lens 10 has moved to the optical axis 57, but may be moved to a circle in the shake correction resumable range 56. In this way, by moving the center of the blur correction lens 10 to a circle within the blur correction resumable range 56, it is possible to quickly perform blur correction when shooting continues. When both or one of the continuous shooting mode selection switch 32b and the full-press switch 21 is turned off, the center of the blur correction lens 10 may be driven up to the circle of the blur correction resumable range 56.

  The blur correction resumable range 56 of the second embodiment of the present invention is divided into two stages of a narrow blur correction restartable range 56a and a wide blur correction restartable range 56b, but the blur correction restartable range 56 is narrow. It is also possible to sequentially set n stages from a range to a wide range, and divide the range into a plurality of blur correction resumable ranges. Further, when the voltage of the power supply battery decreases, the CPU 3 automatically sets the shake correction resumable range 56 to a wide range, thereby reducing the movement amount of the shake correction lens 10 and reducing the power consumption of the power supply battery. You can also Further, at the end of continuous shooting, when the stop position of the shake correction lens 10 is outside the narrow range where the blur correction can be resumed, the CPU 3 moves the center of the shake correction lens 10 to a circle within the narrow range where the blur correction can be resumed. It can be instructed to drive. Thereby, when the continuous shooting is finished and the shift to the continuous shooting is performed again, the movement amount of the blur correction of the blur correction lens 10 can be increased.

1 is a block diagram of a shake correction apparatus according to a first embodiment of the present invention. It is a flowchart explaining operation | movement of the blurring correction apparatus which concerns on 1st Embodiment of this invention. It is the figure which showed the blurring correction resumable range and the movable range of the blurring correction lens superimposed on the photographing screen. It is the figure which piled up and showed on the imaging | photography screen the blurring correction resumable range and movable range which were divided into the narrow range and the wide range. It is a flowchart explaining a part of operation | movement of the blurring correction apparatus which concerns on 2nd Embodiment of this invention. It is a figure for demonstrating the centering operation | movement when single frame imaging mode or continuous imaging mode is selected. It is a figure for demonstrating the kind of centering operation | movement. It is the figure which showed the movement state of the imaging | photography screen when a blurring correction lens is driven with the conventional blurring correction apparatus.

Explanation of symbols

1a, 1b Angular velocity sensor, 2a, 2b Position detection sensor, 3 CPU, 4 Drive circuit, 5 Motor, 10 Shake correction lens, 14 Main CPU, 15 Shutter control circuit, 20 Half-press switch, 21 Full-press switch, 25 Shutter drive , 26 Shutter mechanism section, 27 Film winding control circuit, 28 Motor, 29 Film winding mechanism section, 32 Shooting mode selection section, 32a Single shooting mode selection switch, 32b Continuous shooting mode selection switch, 55 Movable range, 56 Blur correction Resumable range, 56a Narrow blurring resumable range, 56b Wide blurring resumable range, 57 Optical axis

Claims (4)

A blur detection unit that detects blur and outputs blur detection information;
Based on the blur detection information, a blur correction optical system that corrects image blur of a captured image;
A drive unit for driving the blur correction optical system in a first range;
A camera system with a blur correction function comprising:
When the first shooting and the second shooting are performed continuously, the blur correction optical system is set to be inside the first range between the first shooting and the second shooting. A control unit that controls the drive unit to drive the blur correction optical system to the second range when the drive unit is not within the range of 2.
A camera system with a blur correction function. The camera system with a blur correction function according to claim 1,
When the blur correction optical system is in the second range between the first shooting and the second shooting during the continuous shooting, the control unit sets the position of the blur correction optical system. Holding,
A camera system with a blur correction function. In the camera system with a blur correction function according to claim 1 or 2,
Prior to the first shooting, the driving unit is configured so that the center of the blur correction optical system and the optical axis of the optical system of the shooting optical system including the blur correction optical system coincide with each other before the first shooting. Driving the blur correction optical system,
A camera system with a blur correction function. In the camera system with a blur correction function according to any one of claims 1 to 3,
The second range is smaller than an amount of movement for driving the center of the blur correction optical system from the position where the blur correction optical system is stopped to the optical axis of the entire photographing optical system including the blur correction optical system. The range is set to move,
A camera system with a blur correction function.

Images