JPH07294998A - Shake correcting camera - Google Patents

Abstract

PURPOSE:To provide a camera capable of correcting a shake correcting action with high accuracy and making the time lag of a releasing time constant by starting the shake correcting action after the lapse of a prescribed time after the action is started regardless of the length of the driving time of a focus lens. CONSTITUTION:This camera has shake detection devices 21 and 22 for detecting the shake, a shake correction device for executing the shake correcting action based on the detected result by the detection devices 21 and 22 at least in the midst of exposure, a focusing information detection device 12 for detecting focusing information and generating an output signal based on the detected result, a focusing device for executing a focusing action based on the output signal of the detection device 12 and a shake correction controller for allowing the action of the focusing device until the prescribed time lapses after the detection devices 21 and 22 are started but inhibiting the action of the shake correction device until the prescribed time lapses and starting the shake correcting action by always waiting the lapse of the fixed time regardless of the length of the time required for finishing the focusing action.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shake correction camera which detects a shake generated in a camera and corrects the shake on the basis of the detection result to perform photographing.

[0002]

2. Description of the Related Art A shake correction camera is known in which a shake generated in a camera can be detected and the shake can be corrected. In this type of camera, a sensor that measures an angular velocity, an acceleration, and the like caused by a shake and a sensor circuit that drives the sensor and detects a sensor output are provided in the camera.

The sensor outputs a signal according to the shake amount, but since the signal amplitude is generally small, an amplifier for amplifying the sensor output is provided in the sensor circuit. In order to improve the shake detection sensitivity of the sensor circuit, it is sufficient to increase the amplification factor of the amplifier.However, due to fluctuations in the DC component of the sensor output, the input offset voltage of the amplifier, etc., the amplification factor also has a certain upper limit. is there. Therefore, in general, the DC component of the sensor output is cut and input to the amplifier, and the shake amount is detected by compensating for the amplitude of the AC component of the sensor output.

However, if the DC component is cut and amplified, the reference level of the amplified signal, that is, the signal level when there is no fluctuation cannot be easily detected. In order to obtain this reference level, for example, the average value of the output of the amplifier circuit during a time with a margin with respect to the shake cycle may be obtained and used as the reference level. Therefore, the longer the averaging time, the better the accuracy of this reference level.

Incidentally, it takes time for the output of the sensor to stabilize for a while immediately after the power is turned on. Therefore, when the sensor output is not stable, it is not possible to perform an accurate shake correction operation (a part of the shooting lens system is driven to shift in the direction orthogonal to the optical axis). It is desirable to prohibit the correction operation. However, if all shooting operations are prohibited during this period, the shooting sequence will be delayed. Therefore,
If the standby time is used to perform a photographing preparation operation other than the shake correction operation (for example, photometry / distance measurement calculation, exposure calculation, lens drive based on distance measurement calculation), the photographing sequence proceeds smoothly. In other words, the above-mentioned shooting preparation operation is sequentially performed after the sensor is activated, and the stable time of the sensor is gained while the operation is executed. Then, the shake correction operation may be executed with the completion of these shooting preparation operations.

[0006]

However, the time required for the shooting preparation operation is not sufficient for stabilizing the sensor output during each shooting. For example, when the lens driving time based on the distance measurement calculation is extremely short (the focus adjustment information is not detected and the lens driving time is short in the case of the forced infinite mode), the shake correction operation remains uneasy. Therefore, shake correction cannot be accurately performed without detecting a highly accurate reference level.

Even if the time required for the shooting preparation operation is long enough to stabilize the sensor output, the lens driving time for focus adjustment changes depending on the shooting conditions. The time until the start of the shake correction operation (and thus the release time lag cannot be maintained at a certain time) also changes naturally, and the camera becomes difficult for the photographer to handle.

An object of the present invention is to start the shake correction after the drive of the focus lens is completed and a predetermined time or more has elapsed, regardless of the size of the drive time of the focus lens after starting the shake detection. An object of the present invention is to provide a shake correction camera which performs a shake correction with high accuracy and has a time lag at the time of release of a predetermined time or more.

[0009]

A shake correction camera according to a first aspect of the present invention includes a shake detection device for detecting shake, and a shake correction device for performing the shake correction operation based on a detection result of the shake detection device at least during exposure. A focus adjustment information detection device that detects focus adjustment information and generates an output signal based on the detection result, a focus adjustment device that performs focus adjustment based on the output signal, and after the shake detection device is activated. Although the focused state is obtained by the focus adjustment device before the predetermined time elapses, the operation of the shake correction device is prohibited until the predetermined time elapses, and the focus adjustment device keeps the focused state. A shake correction control device that always waits for a certain time or more to start the shake correction operation regardless of the time required to obtain the shake correction control device.

A shake correction camera according to a second aspect of the present invention includes a storage device that stores a value relating to the predetermined time. A shake correction camera according to claim 3, wherein a shake detection device that detects shake, a shake correction device that performs the shake correction operation based on a detection result of the shake detection device at least during exposure, and a shooting preparation that starts a shooting process. An apparatus, a focus adjustment information detection apparatus that detects focus adjustment information and generates an output signal based on the detection result, a focus adjustment apparatus that performs focus adjustment based on the output signal, and after the photographing process is started. Although the focused state is obtained by the focus adjustment device before the predetermined time elapses, the operation of the shake correction device is prohibited until the predetermined time elapses, and the focus adjustment device keeps the focused state. A shake correction control device that always waits for a certain time or more to start the shake correction operation regardless of the time required to obtain the shake correction control device.

A shake correction camera according to a fourth aspect of the present invention includes a storage device that stores a value relating to the predetermined time.

[0012]

According to the first aspect of the present invention, even if the focus adjusting device obtains the in-focus state until a predetermined time elapses after the shake detecting device is activated, the shake correction is performed until the predetermined time elapses. The operation of the apparatus is prohibited, and the shake correction operation is always started after waiting a certain time or more, regardless of the time required for the focus adjusting apparatus to obtain the focused state. As a result, it becomes possible to secure time for accurately calculating the reference level for detecting shake before the predetermined time passes, and by performing shake correction based on the detected shake amount, shake It is possible to provide a shake correction camera capable of improving the accuracy of correction and ensuring a time lag at the time of release for a certain time or more.

According to the second aspect, by storing the predetermined time in the storage device (nonvolatile memory), the release time lag priority or the camera shake correction priority is set depending on the usage of the user who uses the camera. It can be changed easily. For example, it is possible to change this setting according to the user's request at a service window or the like. According to the third aspect, even if the focus adjustment device obtains the in-focus state until the predetermined time elapses after the shooting process is started, the operation of the shake correction device is performed until the predetermined time elapses. Regardless of how long it takes for the focus adjustment device to obtain the in-focus state, the shake correction operation is always started after waiting a certain time or more. This makes it possible to secure a time for accurately calculating the reference level for detecting the shake before the predetermined time passes, and by performing the shake correction based on the detected shake amount,
It is possible to improve the accuracy of shake correction and provide a shake correction camera in which the time lag at the time of release is constant.

According to the fourth aspect, by storing the predetermined time in the storage device (nonvolatile memory), the release time lag priority or the camera shake correction priority is set depending on the usage of the user who uses the camera. It can be changed easily. For example, it is possible to change this setting according to the user's request at a service window or the like.

[0015]

1 is a block diagram of an embodiment of a shake correction camera according to the present invention. 1 is a photographing lens group, and 4 of
It is composed of one lens. Of these, 101 is a focus lens that can move on the optical axis, and 102 is a shake correction lens (hereinafter, referred to as a correction lens) that can move in the illustrated X-axis (horizontal) direction and Y-axis (vertical) direction. Correction lens 10
A shutter 103 is provided in front of 2. Reference numeral 2 denotes a CPU that detects the shake amount and controls the movement of the correction lens. The CPU 2 is composed of a one-chip microcomputer in which a timer, an A / D converter, a counter, and the like are integrated, and controls the entire sequence of the camera.

Reference numeral 3 is a motor for opening and closing the shutter, 4 is a motor for moving the correction lens in the X-axis direction, 5 is a motor for moving the correction lens in the Y-axis direction, and 6 is a motor for moving the focus lens in the optical axis direction. is there. Reference numerals 7 to 10 are motor drive circuits for driving the motors 3 to 6, respectively. The motor drive circuits 7 to 10 drive the motors 3 to 6 by so-called duty drive in which the pulse width is changed according to the motor drive amount. At this time, the drive direction signal and the drive duty signal are input from the CPU 2 to the motor drive circuits 7 to 10. The drive direction signal indicates the drive direction of the motors 3 to 6, and the drive duty signal indicates the drive amount of the motors 3 to 6. The rotations of the motors 4 and 5 are converted into linear motions by a correction lens driving mechanical system (not shown), whereby the correction lens 102 is a two-axis that is orthogonal to the optical axis of the photographing lens group 1 and the illustrated X-axis and Y-axis. Move in each axial direction. The rotation of the motor 6 is converted into a linear movement by a focus lens drive mechanical system (not shown), and the focus lens 101 moves in the optical axis direction of the taking lens group 1.

Reference numeral 11 denotes a photometric circuit for measuring the brightness of the subject.
2 is a focus control information detection circuit for detecting focus control information, 1
Reference numeral 3 is a shake indicator that displays the shake state. 14 is a main switch for turning on the power to each part of the camera, 15 is a half-press switch that is turned on by half-pressing a release button (not shown),
Reference numeral 16 is a release switch which is turned on by fully pressing the release button. Once the main switch 14 is set to the on position or the off position, it holds that state. On the other hand, when the release button is operated, the half-push switch 15 or the release switch 16 is turned on only while the release button is being operated.

Reference numeral 17 is a lens position detection circuit for detecting the position of the correction lens in the X-axis direction, 18 is a lens position detection circuit for detecting the position of the correction lens in the Y-axis direction, and 19 is a lens position for detecting the position of the focus lens. It is a detection circuit.
Each of the lens position detection circuits 17 to 19 outputs a pulse corresponding to the amount of movement of each lens, and the CPU 2 measures the number of pulses to detect the position and amount of movement of each lens. Further, the moving speed of each lens is detected by the moving amount in a predetermined time unit.

Reference numeral 20 denotes a non-volatile memory (for example, E ² PROM) for storing data such as adjustment values necessary for photographing processing, and the CPU ² reads the stored contents as needed. Reference numeral 21 is an angular velocity detection circuit for detecting an angular velocity due to shake in the X-axis direction, and 22 is an angular velocity detection circuit for detecting an angular velocity due to shake in the Y-axis direction. Each angular velocity detection circuit 2
The outputs of Nos. 1 and 22 change according to the magnitude of each velocity, and generally, the greater the angular velocity, the greater the amplitude of the output.

FIG. 2 is a circuit diagram of an embodiment of the angular velocity detection circuits 21 and 22. In FIG. 2, 201 is an angular velocity sensor that detects an angular velocity caused by shake, and 202 is a low-pass filter that removes high frequency component noise included in the output of the angular velocity sensor 201. Reference numeral 203 denotes a high-pass filter and amplifier that removes low-frequency component noise included in the output of the low-pass filter 202 and amplifies the output of the low-pass filter 202. The capacitor C and the resistor R1 inside the high pass filter & amplifier 203 form a high pass filter, and the operational amplifier OP forms an amplifier. The output of the operational amplifier OP is input to the CPU 2 shown in FIG. In addition, one input terminal of the operational amplifier OP,
Analog switch S for the purpose of initializing the angular velocity detection circuit
W is connected.

FIG. 3 is a flow chart showing the main processing by the CPU 2. When the main switch 14 is turned on, the CPU 2 starts the processing of this flowchart. In step S1 of FIG. 3, the registers and the like inside the CPU 2 are initialized. In step S2, it is determined whether the half-push switch 15 is on. If the determination is positive, step S
3, the photographing process of FIG. 4 described later is performed, and step S
Go to 4.

If the determination in step S2 is negative, the process proceeds to step S4 and it is determined whether or not the main switch 14 is on. If the determination is affirmative, the process returns to step S2, and if the determination is negative, the process ends. Although not shown, it is assumed that the angular velocity detection circuit is initialized by turning on the analog switch SW by the CPU 2 for a predetermined time after the power of the angular velocity detection circuit is turned on.

4 and 5 are flow charts showing the details of the photographing process in step S3 of FIG. Step S in FIG.
At 11, a battery check is performed. That is, the voltage value of the battery (not shown) is measured, and it is determined whether or not the voltage value is an operable voltage. In order to accurately measure the voltage value of the battery, it is desirable to measure with the load applied to the battery. Therefore, for example, the battery voltage is measured with the motor drive circuit 7 driven. This step S1
When the determination of 1 is denied, the process returns, and when the determination is affirmed, the process proceeds to step S12. In step S12, the predetermined time of the shake correction prohibition timer is read from the non-volatile memory 20.

In step S13, the angular velocity detection circuit 21,
22 is activated. That is, the power is turned on. As a result, the angular velocity detection circuits 21 and 22 output angular velocity signals corresponding to the shake. Further, from this time point, calculation of a voltage level corresponding to zero angular velocity (hereinafter referred to as zero angular velocity voltage) is started. The reason why the zero angular velocity voltage is obtained here is that the accurate angular velocity can be obtained by subtracting the zero angular velocity voltage from the output voltage of the angular velocity detection circuits 21 and 22. In step S14, the shake correction prohibition timer corresponding to the set time read in step S12 is started. This set time is, for example, about 1100 ms.

In step S15, a signal is sent to the photometric circuit 11 to start the photometric processing. In step S16, a signal is sent to the focus adjustment information detection circuit 12 to perform focus detection processing. In step S17, AE calculation is performed based on the photometric result to obtain the aperture value and shutter speed. In step S18, FM calculation is performed based on the focus detection result to obtain the light emission timing of the electronic flash device (not shown).

In step S19, the angular velocity detection circuit 2
In order to secure a time (for example, 300 ms) in which the outputs 1 and 22 are stable, a wait time (hereinafter, referred to as an angular velocity detection circuit stabilization time) T1 is calculated based on the equation (1), and only this time remains in step S19. T1 = 300 ms− (photometry processing time + focus adjustment information detection time) (1) In this step S19, the angular velocity detection circuits 21 and 22 are irrespective of the time required for photometry and focus adjustment information detection.
Wait until 300ms has passed after starting. Thereby, for example, even if the forced infinite mode or the long time mode is selected and the photometry process or the focus detection process is completed in a short time, 300 ms after the power is supplied to the angular velocity detection circuits 21 and 22, step S19 is performed. Subsequent processing is performed. In step S20, the focus lens 101 is moved based on the focus detection result of step S16. The time required to move the focus lens 101 is about 250 to 500 ms. This is about 250 ms when the forced infinity mode or the infinity focus is detected, and about 500 ms when the closest focus is detected. In step S21, the shake amount is calculated based on the outputs of the angular velocity detection circuits 21 and 22, and a signal corresponding to the shake amount is sent to the shake state indicator 13. As a result, the shake state indicator 13 displays according to the shake amount.
Specifically, for example, the blinking speed of the LED inside the shake state indicator is changed according to the shake amount.

In step S22, the release switch 1
It is determined whether 6 is on. If the determination is negative, the process proceeds to step S23, and it is determined whether the half-push switch 15 is on. If the determination is affirmative, the process proceeds to step S24, and after the shake display of the shake state indicator 13 is updated based on the outputs of the angular velocity detection circuits 21 and 22, the process returns to step S22.

If the determination in step S23 is negative, the process proceeds to step S25 to send a signal to the angular velocity detection circuits 21 and 22 to stop the angular velocity detection. That is, the power is turned off. In step S26, the measurement of the shake correction prohibition timer is stopped, and the process proceeds to step S27. In step S27, the display of the shake state indicator 13 is turned off, and the process returns. On the other hand, if the determination in step S22 is affirmative, the process proceeds to step S28 in FIG. 5 to determine whether or not the self mode is set. The self-mode is a mode in which the shutter 103 is operated after the time specified by the self-timer elapses after the release switch 16 is turned on.

If the determination in step S28 is negative, the process proceeds to step S29 to determine whether or not the red-eye mode is set. The red eye means that the light of the electronic flash device is reflected by the capillaries of the fundus of the subject person to photograph the eye red. For this reason,
The red-eye mode is one in which weak light is emitted from the electronic flash device to the subject person before exposure (hereinafter referred to as pre-emission) to close the pupil and then exposure is performed. If this red-eye mode is selected, the process proceeds to step S30, and pre-emission for 1 second before exposure is performed. If the red-eye mode has not been selected, the process proceeds to step S31, and wait is applied until there is no shake due to the release button being pressed. Hereinafter, this wait time is referred to as shock avoidance time T2. Here, the shock avoidance time T2 is provided so that the shake correction processing is started after the shock avoidance time elapses in order to perform the exposure after the large camera shake caused by the depression of the release button has subsided. . On the other hand, when the determination in step S28 is affirmative, the process proceeds to step S32, and the timer measurement is performed for the time designated in advance by the self-timer.

When the processes of steps S30 to S32 are completed, the process proceeds to step S33, and the display of the shake indicator 13 is turned off. In step S34, the correction lens is moved from the reset position, which is a predetermined initial position, to the photographing lens group 1
To the predetermined center position. In step S35, it is determined whether or not the shake correction prohibition timer has timed out. If the determination is negative, the process stays in step S35,
If the determination is positive, the process proceeds to step S36. The determination in step S35 is provided because the zero angular velocity voltage is accurately obtained and the time lag from the activation of the angular velocity detection circuits 21 and 22 is secured for a certain time or more, and then the step S3 is performed.
This is because the shake correction process of 6 and after is performed. The calculation of the zero angular velocity voltage is performed in the timer interrupt process by, for example, issuing a timer interrupt to the CPU 2 every predetermined time.

If the determination in step S35 is affirmative, the flow advances to step S36 to start the shake correction process. Specifically, the true angular velocity corresponding to the shake amount is obtained based on the outputs of the angular velocity detection circuits 21 and 22 and the calculated zero angular velocity voltage, and the movement amount of the correction lens is calculated based on this, and the motor driving is performed. The drive direction signal and the drive duty signal are output to the circuits 8 and 9.

In step S37, the time until the control of the correction lens 102 becomes stable (hereinafter, referred to as run-up control time) T3 is waited. That is, immediately after the shake correction process is started, the control of the correction lens 102 becomes unstable due to a response delay of the correction lens driving mechanical system or the like.
If the shutter 103 is opened / closed in such a state, a photographed image with large blurring may be obtained. Therefore, an approach control time is provided to open and close the shutter 103 after the control of the correction lens 102 becomes stable. This run-up control time is, for example, about 20 ms.

In step S38, a shutter opening process for opening the shutter 103 is performed. And the above-mentioned AE
After the lapse of the predetermined time calculated by the calculation, the process proceeds to step S39 to perform the shutter closing process for closing the shutter 103. In step S40, the shake correction process is stopped. That is, the signal transmission to the motor drive circuits 8 and 9 is stopped, and the correction lens 102 is stopped. In step S41, a signal is sent to the angular velocity detection circuits 21 and 22,
Stop angular velocity detection. That is, the power is turned off. In step S42, the correction lens 102 is retracted to the reset position, which is a predetermined initial position. In step S43,
The focus lens 101 is retracted to a reset position which is a predetermined initial position. In step S44, a signal is sent to a film feeding circuit (not shown) to wind up the film and return.

FIG. 6 is a flow chart showing the details of the second embodiment of the photographing process subsequent to FIG. In FIG.
The difference from FIG. 5 will be described. In FIG.
In step S36, the shake correction lens is moved to a predetermined center position, and it is determined whether or not the shake correction prohibition timer has timed out. In FIG. 6, the shake correction prohibition timer has timed out in step S51. After determining whether or not it is, in step 52, the shake correction lens is moved to a predetermined center position. In the example of FIG. 5, the time from the activation of the angular velocity detection circuit to the start of the shake correction processing, and in the example of FIG. 6, the time from the activation of the angular velocity detection circuit to the movement of the correction lens to the predetermined central position is performed in step S14. We have secured more than the set time. This is because the time required to move the correction lens to the predetermined center position does not vary so much, and thus it may be configured as shown in FIG.

For steps other than the above steps, steps S28 to S33 are steps S45 to S5, respectively.
0, and steps S36 to S44 are step S5
It corresponds to 3 to 61. In this way, after activating the angular velocity detection circuits 21 and 22, for a predetermined time, for example, 1100.
Since the shake correction processing is started after ms has elapsed, it is possible to secure the time for accurately stopping the zero angular velocity zero voltage corresponding to zero angular velocity, and after the true angular velocity is obtained based on that value, the shake The correction process can be performed, and the accuracy of the shake correction process is improved. In addition, regardless of the focus adjustment time, a time lag from the activation of the angular velocity detection circuits 21 and 22 can be secured for a certain time or more, and the photographer can easily use it. In addition, in the case of a single push (the full push of the release button immediately after the release button is half-pressed), this time lag becomes a constant value, which is easier for the photographer to use.

The angular velocity detection circuit stabilization time T1, the shock avoidance time T2, the approach control time T3, and the shake correction prohibition timer time of the above embodiment are stored in the non-volatile memory 20, and the CPU 2 executes step S1 of FIG. Each time may be read when the initialization process is performed.
Alternatively, several kinds of each of the above times may be prepared so that the photographer can select from among them, or each time can be freely changed. For example, by increasing the shake correction prohibition timer time, the calculation time of the zero angular velocity voltage becomes longer, a more accurate zero angular velocity voltage can be obtained, and the accuracy of shake correction improves.

In the photographing process of FIGS. 4 and 5, the shake detection process is performed after the battery check, but the shake detection process may be immediately performed by half-pressing the release button without performing the battery check. In addition, the shake correction prohibit timer is started after the shake detection process is started, but the battery check time is short at about 20 ms, so the shake correction prohibit timer is measured immediately by pressing the release button halfway. The battery check and the shake detection process may be performed after the start. In this case, when the release button is pressed all the way down (the release switch is turned on immediately after the half-press switch is turned on), the time lag from turning on the half-press switch to the start of the shake correction process is made constant.

In the above embodiment, the angular velocity detection circuit detects the angular velocity caused by the shake. However, instead of the angular velocity detection circuits 21 and 22, a sensor circuit for detecting acceleration or position change other than the angular velocity is used. It may be provided.
In the photographing process of FIGS. 4 and 5, the angular velocity detection circuit stabilization time T1
Although the shake display is performed after the passage of, the shake display may be performed after the shortest time (for example, 900 ms) required to calculate the zero angular velocity voltage has elapsed after the measurement of the shake correction prohibit timer is started. This further improves the reliability of the shake display.

As the focus detection method of the focus adjustment information detection circuit of the above embodiment, various methods such as a focus detection method for measuring the object distance and a focus detection method for examining the state of the focal plane of the taking lens are used. The method of can be applied. In the embodiment configured as described above, the angular velocity detection circuit 21,
22 is the shake detection means, the correction lens 102 is the shake correction means, steps S38 to S45 of FIG. 5 are the control means, and C
PU2 corresponds to the reference level calculation means, the non-volatile memory 20 corresponds to the storage means, and the half-press switch 15 corresponds to the photographing preparation means.

[0040]

As described in detail above, the present invention achieves the following operational effects. According to the first aspect of the present invention, the focus adjustment device obtains the in-focus state until a predetermined time elapses after the shake detection device is activated, but the shake correction device continues until the predetermined time elapses. Regardless of the time required for the focus adjusting device to obtain the in-focus state, the shake correction operation is always started after waiting a certain time or more. As a result, it becomes possible to secure time for accurately calculating the reference level for detecting shake before the predetermined time passes, and by performing shake correction based on the detected shake amount, shake It is possible to provide a shake correction camera capable of improving the accuracy of correction and ensuring a time lag at the time of release for a certain time or more.

According to the second aspect, by storing the predetermined time in the storage device (nonvolatile memory), the release time lag priority or the camera shake correction priority is set depending on the usage of the user who uses the camera. It can be changed easily. For example, it is possible to change this setting according to the user's request at a service window or the like. According to the third aspect, even if the focus adjustment device obtains the in-focus state until the predetermined time elapses after the shooting process is started, the operation of the shake correction device is performed until the predetermined time elapses. Regardless of how long it takes for the focus adjustment device to obtain the in-focus state, the shake correction operation is always started after waiting a certain time or more. This makes it possible to secure a time for accurately calculating the reference level for detecting the shake before the predetermined time passes, and by performing the shake correction based on the detected shake amount,
It is possible to improve the accuracy of shake correction and provide a shake correction camera in which the time lag at the time of release is constant.

According to the fourth aspect, by storing the predetermined time in the storage device (nonvolatile memory), the release time lag priority or the camera shake correction priority is set depending on the usage of the user who uses the camera. It can be changed easily. For example, it is possible to change this setting according to the user's request at a service window or the like.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a shake correction camera according to the present invention.

FIG. 2 is a circuit diagram of an embodiment of the angular velocity detection circuit shown in FIG.

FIG. 3 is a flowchart showing a main process of the CPU shown in FIG.

FIG. 4 is a flowchart showing a photographing process of the CPU shown in FIG.

FIG. 5 is a flowchart following FIG.

6 is a flowchart following FIG.

[Explanation of symbols]

 1 Photographic lens group 2 CPU 3-6 Motor 7-10 Motor drive circuit 11 Photometric circuit 12 Focus adjustment information detection circuit 13 Shake state indicator 14 Main switch 15 Half press switch 16 Release switch 17-19 Lens position detection circuit 20 Non-volatile Memory 21,22 Angular velocity detection circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G03B 17/00 Z

Claims (4)

[Claims] 1. A shake detection device that detects shake, a shake correction device that performs the shake correction operation based on a detection result of the shake detection device at least during exposure, and focus adjustment information is detected and based on the detection result. A focus adjustment information detection device that generates an output signal, a focus adjustment device that obtains a focused state by performing focus adjustment based on the output signal, and a predetermined time after the shake detection device is activated In addition, even if the in-focus state is obtained by the focus adjustment device, the operation of the shake correction device is prohibited until the predetermined time elapses, and the time required for the focus adjustment device to obtain the in-focus state. Regardless of the above, a shake correction camera including a control device that always waits for a predetermined time or more to start the shake correction operation. 2. The shake correction camera according to claim 1, further comprising a storage device that stores a value regarding the predetermined time. 3. A shake detection device that detects shake, a shake correction device that performs the shake correction operation based on a detection result of the shake detection device at least during exposure, a shooting preparation device that starts shooting processing, and a focus. A focus adjustment information detection device that detects adjustment information and generates an output signal based on the detection result, a focus adjustment device that performs focus adjustment based on the output signal, and a predetermined time has elapsed since the shooting process was started. Even if the in-focus state is obtained by the focus adjustment device before the operation, the operation of the shake correction device is prohibited until the predetermined time elapses until the focus adjustment device obtains the in-focus state. A shake correction camera that includes a shake correction control device that always waits for a fixed time to start the shake correction operation regardless of the time required for the shake correction camera. 4. The shake correction camera according to claim 3, further comprising a storage device that stores a value regarding the predetermined time.