JPH05107615A - Image blur preventing device - Google Patents

Abstract

PURPOSE:To effectively function make a device while preventing reduction in operability and an adverse effect to an image, when a consecutive photographing mode is set. CONSTITUTION:An operation control means 6 operating image blur correcting means 3 and 4, when the photographing preparatory action of a camera is executed, and operating image blur correcting means, in a single photographing mode, and up to the first frame of photographing in the consecutive photographing mode, and making the image correcting means into a nonoperating state, after the second frame of the photographing in the consecutive photographing mode, when the photographing action of the camera is executed, is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a single-shot mode and a continuous-shot mode.
The present invention relates to an improvement of an image blur prevention device applied to a camera having a feeding mode of a mode.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a control device for preventing image blur of an optical system such as a camera, that is, for stabilizing an image by suppressing a vibration due to a camera shake. This is generally composed of a sensor that detects vibration and a correction system that performs correction so that image shake does not occur in accordance with a signal from the sensor.

These control devices detect camera shake vibration (usually, tilt vibration around two axes perpendicular to the photographing optical axis) by a sensor as an acceleration signal, a velocity signal, or a displacement signal, and detect these signals. The signal processing system is configured to perform integration, if necessary, to convert it into a displacement signal or a velocity signal, and drive the optical system in the vibration suppressing direction depending on the converted signal.

In the case of performing optical correction, the correction system is configured to swing the optical system in the radial direction or rotate about two axes perpendicular to the photographing optical axis, thereby vibrating the image formed. A feedback system control mechanism for suppressing the above is constructed.

When such image blur prevention is applied to a single-lens reflex camera, the image blur preventer is in the form of an adapter built in the interchangeable lens side or inserted between the camera body and the lens.

FIG. 6 shows an example of such an image blur prevention device.

In FIG. 6, reference numeral 51 is an angular accelerometer,
The angular acceleration about the axis orthogonal to the imaging optical axis of the imaging optical system 54 due to camera shake is detected and output as the angular acceleration signal a. This angular acceleration signal a is integrated into the velocity signal v by the first integrator 52, and further the displacement signal d is obtained by the second integrator 53.
Is converted to. Reference numeral 55 denotes an actuator, which operates so as to control the imaging system 54, which is movable in the radial direction to prevent image blur, in the radial direction by inputting the displacement signal d.

Reference numeral 56 is a variable resistor as a position detecting means for detecting the actual displacement of the image forming optical system 4, and a signal from this position detecting means is fed back to the input system of the actuator 55. A local feedback loop is constructed to make the driving amount of the imaging optical system 54 correspond to the vibration displacement. 57 is the second integrator 53 and the actuator.
It is an operational amplifier provided between the input and output terminals 55.

Many recent cameras have a built-in winder, and film feeding and rewinding are automated. In most of these cameras, the film feed mode is set to 1 when the release switch is pressed down.
A single-shot mode in which no frame is released even if the frame is shot and the release switch is pressed down.
And a continuous shooting mode in which the release is continuously repeated while the release switch is pressed down.

When the continuous shooting mode is used, the subject is usually a moving object. When shooting a moving object, it often involves a panning operation that moves the camera according to the movement of the subject, but it is difficult to distinguish the camera shake operation to be corrected from the panning operation that is moved by the photographer's will.
When aiming at a moving object, the image blur correction operation (image blur prevention operation) may rather be an obstacle. In the first place, continuous shooting mode
The shutter speed when using the shutter is often a relatively high shutter speed for the purpose of capturing an image so as to stop the motion of the moving body, and often does not require anti-vibration.

Further, in the case of the image blur preventing device which uses the angular acceleration sensor described in the above-mentioned conventional example, the output of the angular acceleration signal is secondarily integrated to obtain the angular displacement, and control is performed by the angular displacement. , The mirror shock and shutter shock at the time of release may adversely affect. This is because a small error signal is generated in the sensor output due to the shock, and even if it is small, the error is amplified during the second-order integration and appears as a large displacement error. In the case of continuous shooting mode, the displacement error due to this shock
Has a problem that it adversely affects the images after the second frame of shooting.

Therefore, in order to solve the above-mentioned problems, the applicant of the present invention, when the feeding mode is the single shooting mode, performs the shooting preparation operation (when the switch SW1 is on) and The image blur prevention device is designed to perform the image blur correction operation during the shooting operation (when the switch SW2 is turned on), but does not perform the image blur correction operation during the continuous shooting mode (unpublished). is doing.

[0013]

However, even if the continuous shooting mode is set as the feeding mode, continuous shooting is not always performed during actual shooting, and therefore continuous shooting is performed. If the above is not performed, it is desirable to perform the image blur correction operation during finder observation. Further, the displacement error due to the integration described above has no effect unless it is the second frame of photographing or later.

In view of the above points, an object of the present invention is to provide an image blur correction function of the apparatus while preventing deterioration of operability and adverse effects on images when the continuous shooting mode is set. An object of the present invention is to provide an image stabilizing device that can effectively operate.

[0015]

SUMMARY OF THE INVENTION According to the present invention, the image blur correction means is operated during the shooting preparation operation of the camera, and the single shooting mode and the continuous shooting mode are used during the shooting operation of the camera. There is provided operation control means for activating the image blur correction means up to the first frame, and deactivating the image blur correction means for the second and subsequent frames in the continuous shooting mode.

[0016]

For example, the image blur correction operation is useful in addition to the shooting preparation operation of the camera in which the release switch is half-depressed to perform finder observation or the like, and the shooting operation of the camera in the single shooting mode. The image blur correction means is operated up to the first frame of shooting in continuous shooting mode, and the image blur correction means is deactivated after the second frame of shooting in continuous shooting mode in which the image blur correction operation is not useful. I am trying to do it.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the illustrated embodiments.

FIG. 1 is a diagram showing the construction of a single-lens reflex camera provided with an interchangeable lens of an embodiment of the present invention.

First, the interchangeable lens body 1 side will be described.

An image blur prevention device 7 is provided in the interchangeable lens body 1.
The image blur prevention device 7 includes a shake prevention control unit 5 that performs the shake prevention operation described in the section of the related art, and a shake control unit that manages the start and stop of the operation of the shake prevention control unit 5. It consists of a prevention CPU 6.

The shake prevention control section 5 is a shake detection sensor 2 for detecting shake, a signal processing system 3 for performing feedback control based on a signal from the shake detection sensor 2, and a control signal from the signal processing system 3. The shake prevention drive system 4 performs an actual shake correction operation.

These correspond to the angular accelerometer 51 for the sensor 2 and the signal processing system 3 similarly to the shake prevention device described in FIG.
53, the position detection means 56, and the operational amplifier 57. The shake prevention drive system 4 also corresponds to the image forming system 54 and the actuator 55.

Further, the interchangeable lens body 1 has an in-lens power source 8 built therein. As the power source, for example, a lithium battery for a camera, an alkaline manganese dry battery, a Ni-Cd dry battery or the like is used. Then, power is supplied to the image blur prevention device 7 from the in-lens power source 8.

Further, in the interchangeable lens body 1, the lens C
A lens electric system 13 including a PU 9, a focus driving system 10, a zoom driving system 11, and an aperture driving system 12 is arranged.

The lens CPU 9 receives communication from the camera body 15 side through communication contacts 14c and 14d.
Depending on the command value, the focus drive system 10, the zoom drive system 11, and the aperture drive system 12 are operated, and the state inside the lens (zoom position, focus position, aperture value state, etc.) And information about the lens (open aperture value, focal length,
Contact point 1 for communication of data necessary for distance measurement calculation)
It has a function of transmitting from 4e to the camera body 15 side.

Communication between the camera body 15 and the interchangeable lens body 1 is performed as follows.

For communication, a serial clock signal line L sent from the camera body 15 to the interchangeable lens body 1
CLK, the data signal line DCL which is also transmitted from the camera body 15 to the interchangeable lens body 1, the interchangeable lens body 1
Data signal line DL transmitted from the camera to the camera body 15
Three signal lines of C are used, and the communication is performed by clock synchronous serial communication.

FIG. 2 shows a camera body 15 and an interchangeable lens body 1.
It is a timing chart of communication between.

The data signal (via the lines DCL and DLC) transmitted from the camera body 15 or the interchangeable lens body 1 is switched at the falling timing of the serial clock signal, and the serial clock rises at the receiving side. Latched by edge. One communication unit is 8-bit data, which is transmitted at the MSB head. When the data line is "H", the data is "1",
When it is “L”, it is “0”. The receiving unit and the transmitting unit are independent, and data is transmitted from the camera body 15 to the interchangeable lens body 1 and the interchangeable lens body 1 to the camera body 1 in one communication.
The data transmission to 5 is performed simultaneously.

Communication is carried out in the form of commands to the interchangeable lens body 1. For example, move the focus drive system by the specified number of pulses even if the diaphragm is closed or opened.
A command is prepared to send the information necessary for distance measurement calculation to the body.

An example of actual communication will be described with reference to FIG.

In FIG. 2, first, the command "60h (hexadecimal)" is sent from the camera body 15 to the interchangeable lens body 15. Due to the communication system, data is also sent from the interchangeable lens body 1 side at this time,
When this command “60h” is sent, “00h” is sent from the interchangeable lens body 1 to the camera body 15.
(Do nothing, have no meaning) is sent.

Here, "60h" is a command requesting the interchangeable lens body 1 to return information (for example, focal length, aperture value, etc.). After this command is issued, the interchangeable lens body 1 prepares the necessary information, and when the camera body 15 transmits the next eight clocks, the prepared information is synchronized with the camera body 15 side. Send to.
At this time, since the camera body 15 side is for the purpose of obtaining information from the interchangeable lens body 1 side, "00h" is transmitted from the camera body 15 to the interchangeable lens body 1 as data.
In the example of FIG. 2, "21h" is transmitted from the interchangeable lens body 1 side as a reply to "60h".

Communication is performed as described above, and the camera body 15
If data is required for calculation for distance measurement or photometry on the side, and focusing operation, diaphragm operation, etc. are performed every time when necessary.

Further, in the present embodiment, the camera body 1
This communication also serves as a transmission means of the feeding mode 5 for the interchangeable lens body 1.

FIG. 3 shows the contents of communication in this embodiment.
It will be explained based on.

FIG. 3 is a diagram showing the contents of communication as information transmission means on the camera body 15 side. In this embodiment, when a command of "80h" is transmitted from the camera body 15, the camera body then follows. The data sent from 15 represents the feeding mode of the camera body 15, the state of the release switch, the photometric mode, and the shutter speed.
FIG. 3 shows the bit structure of this status byte.

The bit 7 of the status is a bit representing the feeding mode on the camera body 15 side as described in this embodiment. When this bit is "1", the continuous shooting mode,
When it is "0", it indicates that the single shot mode is set. On the side of the interchangeable lens body 1 incorporating the image blur prevention device 7, the feeding mode of the camera body 15 is known from the bit 7. Bits 6 and 5 are bits representing the state of the release switch. When the release switch is not pressed at all, bits 6 and 5 are "0", and the release switch is pressed halfway. Standing state (SW1
(When the switch is turned on), only bit 5 becomes "1", and bit 6 when the release switch is fully pressed.
Both 5 are configured to be "1". Bit 4
Is a bit for identifying whether it is the first frame or the second frame or later in the continuous shooting mode, and "0" at the first frame in the continuous shooting mode.
It is set to "1" after the second frame. It has no meaning in single-shot mode.

The other bits of this status are not directly related to the description of the present embodiment. For example, bit 3 indicates the metering mode of the camera body 15 (center-weighted average metering or evaluation metering). The shutter speed is set by bits 2 to 0. The shutter speed is set at an interval of two steps according to the given number of bits.

Such communication regarding the state of the camera body 15 is performed by the camera body 15 side when the interchangeable lens body 1 is attached to the camera body 15 and when the camera body 15 is switched from the operation stop state to the operation state. It is performed whenever necessary, such as when the settings are switched.

The components on the side of the interchangeable lens body 1 will be described again.

The focus driving system 10 includes a lens CPU 9
Focusing is performed by driving a lens for focus adjustment according to a command value from. The zoom drive system 11 includes a lens C.
The lens barrel is driven so as to change the focal length of the lens in response to a command value from the PU 9 or when a switch (not shown) is pressed by the photographer. Aperture drive system 1
2 performs an operation of stopping down the diaphragm to a set position or returning to the open state according to a command value from the lens CPU 9.

The lens CPU 9, the focus driving system 10,
The lens drive system 11 and the diaphragm drive system 12 constitute the lens electric system 13 as described above, and the lens electric system 13 is provided with the mount portions Vdd (contacts 14a), G
Power is supplied from the power supply 22 arranged in the camera body 15 through the ND (contact 14b).

Next, the camera body 15 side will be described.

The camera electric system 2 is provided inside the camera body 15.
1 is arranged, and the camera electric system 21 includes a photometry unit 16,
It is composed of a distance measuring unit 17, a shutter 18, a feeding charge system 19, and a camera CPU 20 which manages the start and stop of these operations, an exposure calculation, and a distance calculation. Furthermore,
Inside the camera body 15, a feed mode changeover switch 23 and an in-camera power supply 22 for supplying power to the camera electrical system 21 are built in.

The feeding mode changeover switch 23 is connected to the camera CPU 20 and is in an open state (camera CPU 2
0 for "H" input, single shooting mode, input state (CPU2
0 is set to continuous shooting mode by "L" input.

Next, the operation of this embodiment will be described.

FIG. 4 is a flow chart of a portion for checking the feeding mode switch 23 of the camera CPU 20 and a portion for checking the release switch.

The camera CPU 20 periodically (for example, 1
Check that there is no change in the surrounding switches at every 00 msec. Alternatively, the camera CPU 20 may be interrupted when the switch is switched, and the switch may be checked when the interrupt occurs.

The procedure for checking the states of the feeding mode and the release switch will be described below with reference to FIG.

The camera CPU 20 starts the operation from step 100 when the feeding mode check operation is started as described above at regular time intervals or at an interrupt operation or the like. [Step 100] Feed mode selection switch 23
The state is determined and the process proceeds to step 101. [Step 101] The state of the feed mode changeover switch 23 stored inside is compared with the state of the feed mode changeover switch 23 read in the step 100 to check whether a change has occurred. To do. As a result, if there is no change, the process proceeds to step 107, and if there is a change, the process proceeds to step 102. [Step 102] It is determined whether the mode is single-shot mode or continuous-shot mode. If the single-shot mode is selected, the process proceeds to step 103. If the single-shot mode is selected, the step is determined. Go to 105. [Step 103] The fact that the single shooting mode has been set is stored internally, and the process proceeds to step 104. [Step 104] Using the communication line for notifying the interchangeable lens body 1 side of the state of the camera described above, the interchangeable lens body 1 is communicated that the camera body 15 side is in the single shooting mode. Then, the process proceeds to step 107.

If it is determined in step 102 that the continuous shooting mode is selected, the process proceeds to step 105 as described above. [Step 105] The fact that the continuous shooting mode has been set is stored internally, and the process proceeds to step 106. [Step 106] Similar to step 104, the interchangeable lens body 1 is informed that the camera body 15 is in the continuous shooting mode. Then, the process proceeds to step 107. [Step 107] The release switch is checked. The release switch is configured such that the switch SW1 is turned on in the half-pressed state and the switch SW2 is turned on in the fully-pressed state (at this time, the switch SW1 is also turned on). [Step 108] Here, it is determined whether or not the switch SW1 is on. If it is on, the process proceeds to step 109, and if it is off, the process proceeds to step 119. [Step 109] Here, it is determined whether or not the switch SW2 is on. If it is on, the process proceeds to step 113, and if it is off, the process proceeds to step 110. [Step 110] Bit 4 of data representing the state on the camera body 15 side described with reference to FIG. 3 (hereinafter referred to as cou) for determining whether or not it is a release after the second frame of continuous shooting.
(marked as nt). [Step 111] Turning on the switch SW1 and counting
The state of t is communicated to the interchangeable lens body 1 side. [Step 112] Processing such as AE and AF is performed, and the check sequence ends.

In step 109, the switch SW
If 2 is on, step 1 as described above.
Proceed to 13. [Step 113] The interchangeable lens body 1 is informed that the switch SW2 is on. [Step 114] Continuous shooting mode and next release
It is determined whether or not the shot is the second frame or later of continuous shooting. As a result, the continuous shooting mode is set and the next release is the continuous shooting mode 2.
If it is the first frame or later, the process proceeds to step 115. If not, that is, if it is the first frame in the single shooting mode or the continuous shooting mode, the process proceeds to step 116. [Step 115] Set count to "1",
Proceed to step 117. [Step 116] Clear the count to "0",
Proceed to step 117. [Step 117] The count state is communicated to the interchangeable lens body 1 side, and the process proceeds to step 118. [Step 118] Mirror up, shutter release
Enter the release sequence such as reading, mirror down, and film feeding, and finish the sequence of this check.

In step 108, the switch SW
If 1 is off, then step 1 as described above.
Proceed to 19. [Step 119] The operations such as AE, AF, and release are stopped, and the process proceeds to step 120. [Step 120] Clear the count bit. [Step 121] The OFF state of the switches SW1 and SW2 is communicated to the side of the interchangeable lens body 1 to end the check sequence.

As described above, in this embodiment, the release switch is in the depressed state during continuous shooting in continuous shooting mode, so the switch SW2
The state of ON is retained, and "count" is displayed in the first frame of continuous shooting.
= 0 ”, and since the second frame and subsequent steps pass through step 115,“ count = 1 ”. When the release switch is half-depressed (switch SW1 is on) or the release switch is released, "count = 0" is cleared.

FIG. 5 is a flow chart showing an operation procedure in the shake prevention CPU 6 built in the interchangeable lens body 1, which will be described below.

When the shake prevention CPU 6 is activated, the operation from step 200 is started. [Step 200] Initialize internal variables and peripheral circuits. [Step 201] The wait state is entered until communication is received from the camera body 15, and the process proceeds to step 202 because of communication. [Step 202] The received communication is the camera body 15
It is determined whether or not the command is “80h” for transmitting the state on the side to the interchangeable lens body 1. If so, the process proceeds to step 203, and if the command is not “80h”, the process proceeds to step 207. [Step 203] Data following the command "80h" (this represents the state on the camera body 15 side)
Is received, and the process proceeds to step 204. [Step 204] Here, the feeding mode (bit 7)
It is determined whether there is a change in. As a result, if there is no change, the process directly proceeds to step 206, and if there is a change, the process proceeds to step 205. [Step 205] The change in the feeding mode on the camera body 15 side is internally stored, and the process proceeds to step 206. [Step 206] It is checked whether or not the states of the switches SW1 and SW2 (not shown) on the camera body 15 side have changed. If there is no state change, the process proceeds to step 207. If there is a state change, the process proceeds to step 212. [Step 207] It is determined whether or not there is a change in the count bit indicating the release of the second and subsequent frames in the continuous shooting mode. As a result, if the count has not changed, the process proceeds to step 216 as it is, and if the count has changed, the process proceeds to step 208. [Step 208] The change in count is stored, and the process proceeds to step 209. [Step 209] It is determined whether the switch SW2 is on. If it is on, the process proceeds to step 210, and if it is off, the process proceeds to step 216. [Step 210] It is determined whether or not the feeding mode is the continuous shooting mode. If the continuous shooting mode is selected, the process proceeds to step 211. If the single shooting mode is selected, the process proceeds to step 216. [Step 211] It is determined whether or not “count = 1”, and if so, the process proceeds to step 214 and “c
If “out = 0”, the process proceeds to step 216.

That is, the above steps 209, 210, 2
11, the switch SW2 is turned on and the feeding mode is set.
If the mode is continuous shooting mode and "count = 1",
The process proceeds to step 214 for stopping the image blur correction operation described later.

In step 206, the switch SW
If the states of 1 and SW2 have changed, the process proceeds to step 212 as described above. [Step 212] Newly changed switch SW1,
The state of SW2 is stored internally, and the process proceeds to step 213. [Step 213] It is checked whether the current state is the switch SW1 ON or the switch SW2 ON. As a result, if either one is on, the process proceeds to step 215, and if neither is on, the process proceeds to step 214. [Step 214] Here, the image blur correction operation is stopped, and the process proceeds to step 216. [Step 215] Here, the image blur correction operation is started. If the state changes and the switch SW2 is turned on, it is surely the first frame even during continuous shooting, so even if the image blur correction operation is started without checking the feeding mode and the count. I do not care. Then, the process proceeds to step 216.

If the count has not changed in step 207, steps 209, 210 and 2 are executed.
In FIG. 11, when the switch SW2 is off, the feeding mode is the single shooting mode, and "count = 0",
Alternatively, after the operations of steps 214 and 215 are completed,
As described above, the process proceeds to step 211. [Step 21
1] Other processes than the above steps are performed, and then the process returns to the communication waiting loop of step 201 to repeat the process.

The main points of the above embodiment will be briefly described. The image blur prevention device 7 is configured so that the image blur prevention device 7 is started and stopped by the image blur prevention CPU 6.
Basically operates the device in conjunction with the movement of the release switch on the camera body 15 side (starts the image blur correction operation). That is, when the release switch is pressed halfway to perform the shooting preparation operation (switch SW1 is on) or when the shooting operation is fully pressed (switch SW2 is on), the image blur prevention device 7 is operated to release the release switch. Is not pressed (Both switches SW1 and SW2 are off)
Then, the operation of the image blur prevention device 7 (image blur correction operation) is stopped. And even when performing normal image blur correction operation,
In this embodiment, the continuous feed mode is selected by looking at the feeding mode on the camera side.
If the switch SW2 is on, and the second frame of continuous shooting is onward, the image blur prevention device 7 is not operated (the image blur correction operation is stopped).

According to the present embodiment, the image blur correction operation is useful even in the continuous shooting mode in which a malfunction may occur due to a shock at the time of release, etc. Image blur correction is performed until the end of the first frame, and even in continuous shooting mode, continuous shooting that adversely affects the image due to shocks such as mirror up, release, and film feeding. Since the image blur correction operation is stopped only when the second and subsequent frames are photographed, it is possible to maximize the functions of the apparatus while preventing adverse effects on the image.

(Modification) In this embodiment, the image stabilizing device is incorporated in the interchangeable lens body 1 side, but the invention is not limited to this. Even in a compact camera in which the interchangeable lens body and the camera body are integrated, for example, the present invention can be applied to any camera having a switching between single-shot mode and continuous-shot mode and having a built-in image stabilizing device. Needless to say.

Also in the single-lens reflex camera, the image blur prevention device is not inside the interchangeable lens body, but is attached to the front of the interchangeable lens body or an adapter that is inserted between the camera body and the interchangeable lens body like an extender. You may take the form as an accessory which goes into a conversion lens etc.

Further, the communication means and communication method between the interchangeable lens body and the camera body are not limited to those described in this embodiment. For example, the communication may be performed by parallel communication, and the number of bits of data, assigned commands, meaning of data, etc. are not limited to these. In particular, what communication content indicates the feeding mode on the camera body side is not limited to the configuration of this embodiment.

Further, in the present embodiment, an example of the interchangeable lens main body configured to electrically drive the zoom is also shown, but the present invention is not limited to the zoom lens and is applied to a single focus lens. Needless to say, the present invention is applied to an interchangeable lens body in which zooming is manually performed even in the case of a zoom lens, and the above is applied only to the diaphragm and focus drive. Needless to say, it can be configured as follows.

[0067]

As described above, according to the present invention,
During the shooting preparation operation of the camera, the image shake correction means is operated, and during the shooting operation of the camera, the image shake correction means is operated in the single shooting mode and the first frame of shooting in the continuous shooting mode,
After the second frame of photographing in the continuous shooting mode, operation control means for disabling the image blur correction means is provided, and the operation control means, for example, half-depresses the release switch to observe the viewfinder. In addition to the image-shooting preparation operation of the camera and the shooting operation of the camera performed in the single-shot mode, the image-shake correction means is provided up to the first frame of the continuous shooting mode in which the image-shake correction operation is useful. The image shake correcting means is operated after the second frame of photographing in the continuous shooting mode in which the image shake correcting operation is not useful. Therefore, when the continuous shooting mode is set, it is possible to effectively operate the function of the apparatus while preventing deterioration of operability and adverse effects on the image.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a single-lens reflex camera including an apparatus according to an embodiment of the present invention.

FIG. 2 is a timing chart during communication between the camera body and the interchangeable lens body in FIG.

FIG. 3 is a diagram showing the contents of communication as information transmission means on the camera body side of FIG.

FIG. 4 is a flowchart showing an operation relating to a feeding mode switching operation of the camera CPU of FIG.

5 is a flowchart showing the operation of the image blur prevention CPU on the interchangeable lens body side of FIG.

FIG. 6 is a diagram showing a schematic configuration of a conventional image blur prevention device.

[Explanation of sign]

 2 Shake detection sensor 3 Signal processing system 4 Shake prevention drive system 5 Shake prevention control unit 6 Shake prevention CPU 20 Camera CPU 23 Feed mode selector switch

Claims (1)

[Claims] 1. A shake detecting means for detecting a shake state,
For a camera having a feeding mode of a single shooting mode and a continuous shooting mode, which is provided with an image blur correction means for correcting the image blur caused by the blur based on the output of the blur detection means. In the image blur prevention device, the image blur correction means is actuated at the time of the shooting preparation operation of the camera, and at the time of the shooting operation of the camera, the image up to the first frame in the single shooting mode and the continuous shooting mode. An image blur preventing apparatus comprising an operation control means for activating the image blur correction means and deactivating the image blur correction means after the second frame of photographing in the continuous shooting mode.