JPH07244323A - Camera capable of correcting blur - Google Patents

Abstract

PURPOSE:To provide photographing conditions not causing blur for a photographer even in the unstable state of output just after power is supplied to a camera-shake detecting means. CONSTITUTION:In this camera for correcting blur correcting the movement of an image on an image forming surface based on the camera-shake detected by a camera-shake detecting means detecting the camera-shake, a blur correcting mode setting means 2 setting the camera in a blur correcting mode, a power saving mode setting means setting the camera in a power saving mode when the camera is not used, a power supplying means 4 supplying the power to the camera-shake detecting means and a focal distance changing means 5 varying a photographic focal distance are provided and when the blur correcting mode is set by the blur correcting mode setting means 2 in the power saving mode, the supply of the power from the power supplying means 4 is started and simultaneously the change in the focal distance changing means 5 is inhibited by a previously set specified time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of detecting a camera shake state and correcting the shake so that the influence of the detected shake is minimized.

[0002]

2. Description of the Related Art For example, Japanese Patent Application Laid-Open No. 03-100634 discloses that an output is not stable immediately after power is supplied to a camera shake detection unit, and therefore a warning is displayed until the output is stabilized.

Further, Japanese Patent Laid-Open No. 02-146022 discloses that the recording is ended after the focal length is widened or telephoto before the recording is finished and the blurring is not noticeable.

[0004]

However, the above-mentioned Japanese Patent Application Laid-Open No. 03-100634 only gives a warning, and it is substantially impossible to perform shake-correction photography with a predetermined accuracy.
Further, in Japanese Patent Laid-Open No. 02-146022, the focal length shifts to wide or telescopic each time the recording is ended, so that it is not easy to use when it is desired to end the recording once and record again immediately.

The camera capable of blur correction according to the present invention has been made in view of such a problem, and its purpose is to provide the camera even when the output is unstable immediately after the power is supplied to the blur detecting means. An object of the present invention is to provide a camera capable of blur correction capable of providing a photographer with shooting conditions that are not affected by blur.

[0006]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a blur correcting means for correcting image movement on an image plane based on the blur detected by a blur detecting means for detecting blur of a camera. In a camera that can be corrected, a shake correction mode setting means for setting the camera to a shake correction mode for performing shake correction, and a power saving mode for setting the camera in a power saving mode in which only minimum functions are operated when the camera is not in use The image forming apparatus includes a setting unit, a power supply unit that supplies power to the shake detecting unit, and a focal length changing unit that changes a shooting focal length. The shake correcting mode is set by the shake correcting mode setting unit in the power saving mode. When set, the power supply from the power supply means is started, and the change of the focal length changing means is prohibited for a predetermined time set in advance. So as to.

Further, according to the present invention, in a camera capable of blur correction for correcting image movement on an image plane based on blur detected by blur detecting means for detecting blur of the camera, a blur correction mode for performing blur correction is provided. The camera shake correction mode setting means for setting the camera, the power saving mode setting means for setting the camera to the power saving mode for operating only the minimum functions when the camera is not used, and the power supply for the shake detecting means. The power supply means, the focal length changing means for changing the photographing focal length, and the time measuring means for measuring the time during which the photographing operation is not performed after the blur correction mode is set are provided, and the output of the time measuring means is provided. When the predetermined time is exceeded, the shake correction mode is set to the power saving mode and the power supply from the power supply means is reduced or stopped. So as to drive the focal length changing means to preset predetermined focal length.

[0008]

That is, according to the present invention, when the camera shake correction mode is set by the camera shake correction mode setting means for setting the camera shake correction mode in the power saving mode in which only the minimum functions are operated when the camera is not used, the camera is The power supply from the power supply means is started in order to supply power to the shake detection means for detecting the shake, and the change of the focal length changing means is prohibited only for a predetermined time.

Further, according to the present invention, when the output of the time measuring means for measuring the time during which the photographing operation is not performed after the blur correction mode is set exceeds the predetermined time, the blur correction mode is set to
Set to a power saving mode that operates only the minimum functions when the camera is not in use, and reduce or stop the power supply from the power supply means to the shake detection means,
The focal length changing means is driven to a preset predetermined focal length.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a diagram showing the configuration of a first embodiment of the present invention. In the figure, the operation state determination means 1 is a camera
Determine the operation state of the lens by the photographer. The shake correction shooting mode setting means 2 sets a shooting mode for shooting with a camera shake correction operation. The power feeding means 4 feeds power to a camera shake detection device for detecting camera shake. The focal length changing means 5 changes the focal length of the taking lens (zoom lens). The above four means are connected to the camera control means 3 for controlling the entire camera.

The operation in FIG. 1 will be described. First, the camera control means 3 selects a shake correction shooting mode as a shooting mode, and a camera shake detection device not shown in FIG.
It is assumed that the shake correction device or the like is ready for shake-correction shooting. At this time, the power supply means 4 is supplying power to the above-described camera shake detection device.

Further, the focal length of the zoom lens is changed by the operation of the photographer, and the focal length changing means 5 changes the focal length of the taking lens according to this operation. Then, when the photographer operates a release button (not shown in FIG. 1), photographing is performed in a form in which the influence of camera shake during photographing is corrected.

In the above-mentioned state, photographing is performed with a normal blur correction operation. However, if the photographer does not operate the camera for a predetermined time, only the minimum necessary operation is performed and unnecessary power is consumed. To prevent consumption, the camera control means 3
To the power saving mode (standby state) of the camera. At this time, the operation state determination means 1 determines the operation state of the camera. The determination result here is sent to the camera control means 3.

If the camera control means 3 determines that the power saving mode (standby state) should be entered, the power supply means 4 which is supplying power to the camera shake detection device is first stopped. At the same time, the focal length changing means 5 changes the focal length so that the photographing focal length is on the wide side (wide end).

In addition to this, the photometric device of the camera, the distance measuring device, the display in the viewfinder, the external display, the charging of the strobe, etc. are stopped, and the camera body / photographing lens enters the power saving mode (standby state), and the minimum necessary Power consumption can be reduced.

In the above-mentioned state, when the operation state judging means 1 judges that the operation member of the camera (eg release button, zoom button, etc.) is operated, this information is sent to the camera control means 3. Here, the camera control means 3 determines whether or not the shake correction shooting mode setting means 2 has selected the shake correction shooting mode, and if so, power is supplied to start power supply to the camera shake detection device. Send an instruction to the means 4.

Even if the photographer inputs an instruction to change the photographing focal length to the telephoto side, the focal length changing means 5 is prohibited from changing the focal length for a predetermined time.
The camera control means 3 performs a predetermined control.

As described above, the power feeding means 4 and the focal length changing means 5 are controlled according to the operating state of the operating member of the camera. The necessity thereof will be described below. Figure 1
0 represents the output trajectory of the camera shake detection device when the camera shake detection device is in a stationary state when the power supply is switched from OFF to ON. In FIG. 10, until the power supply state is turned on at timing A, the output of the camera shake detection device is almost 0.
It is the level of the bolt and does not change. When power supply is started at the timing A, the output of the camera shake detection device changes in the form of the locus shown in the figure so as to stabilize at Vref, which is the output level when there is no vibration.

At timing B, the output of the camera shake detection device stabilizes at about Vref. That is, during the period from timing A to timing B (sec), the output of the camera shake detection device is in an unstable state unrelated to camera shake. During this period, if the shake correction device is operated based on the output of the shake detection device to correct the shake, there is a possibility that the desired shake correction performance cannot be obtained. It is needless to say that the exposure operation accompanied by the shake correction is performed in this state, and even if the exposure operation accompanied by the shake correction operation is not performed, even if the operator is just looking into the finder image in the shooting preparation state. , The peeked image is extremely disturbed and unpleasant.

Therefore, by setting the photographing focal length state to the wide side (wide end) while the output of the camera shake detection device is unstable, even if the camera shake occurs, the focal length is in the wide state. Therefore, the amount of image movement due to blurring is small, and the drive amount of the blurring correction device is also small. Therefore,
You don't have to have the unpleasant feelings mentioned above. Then, the output of the camera shake detection device becomes almost stable at the timing B after T (sec) from the time when the power feeding means 4 is turned on at the timing A, and therefore, after this time, the photographer shifts to the tele side. If there is an instruction input to change the shooting focal length of,
As usual, the focal length changing means 05 changes the focal length.

The effects of the above configuration and operation are effective in the following cases. For example, when the shooting mode of the camera is the shake correction shooting mode and the camera is in the power saving mode (standby state), the known first release, second release
When the shutters are simultaneously (at once) operated within a short period of time, it is conceivable that the camera first comes out of the power saving mode and starts power supply to the camera shake detection device. In addition, photometry and distance measurement operations are performed.

However, for the reasons described above, the output of the camera shake detection device cannot be immediately adopted as it is, and conventionally, the drive of the camera shake correction device is prohibited or a warning / display to that effect is given. However, in the present invention, since the shooting focal length is on the wide side (wide end),
Even if blurring occurs, the influence of this blurring is quite small. Further, when the user wants to shoot with the shooting focal length on the tele side, an operation for giving an instruction to change the focal length is entered, and the photographer decides the framing again.
Therefore, when the above-described first release and second release are simultaneously operated within a short time, the occurrence of camera shake is relatively large, and the range in which the shake correction device can operate is easily deviated. Since the operation of framing is included, there is an advantage that blurring that occurs is likely to be small. During that time, the output of the camera shake detection device becomes stable, and the camera shake correction operation with high accuracy becomes possible.

FIGS. 2 and 3 are modifications of the first embodiment shown in FIG. Here, description of the same parts as those in FIG. 1 will be omitted. 2 and 3, the above-described camera shake detection device 8 is connected to the power supply means 4 and detects the camera shake state of the camera as described above. Specifically, a velocity sensor, an angular velocity sensor, an optical fiber gyro and the like can be mentioned. Also, the focal length optical system 9
Is driven by the focal length changing means 5, and the focal length is changed by this.

According to the above-described first embodiment, when the camera power saving mode (standby state) is changed to the shooting preparation state, even if the output of the camera shake detection device immediately after the power supply is unstable, the shooting is performed. Since the focal length is on the wide side (wide end), it is possible to provide the photographer with shooting conditions that are not affected by blurring during shooting.

The second embodiment of the present invention will be described below. In the second embodiment, as shown in FIG. 2, the operation state determination means 1 is connected to the time counting means 6. Specifically, the time when the operation member is not operated is counted up or down by a software or hardware counter, and when a predetermined value (predetermined time) is reached, information is output to that effect. is there. The time measuring means 6 measures the time during which none of the operation members such as the release button and the zoom button of the camera are operated.

When the camera is not operated for a predetermined time (for example, 2 minutes, 5 minutes, etc.), this information is sent to the operation state judging means 1. The operation state determination means 1 determines that the camera is not operated for a while after that, and sends information to that effect to the camera control means 3. In response to this, the camera control unit 3 controls the power supply unit 4 to turn off the power supply to the camera shake detection device 8 as described above, and the focal length changing unit 5 sets the focal length optical system 9 to the wide-angle end side (wide side). Alternatively, the control is performed such that it is set to the telephoto side rather than the wide-angle end side so that there is no influence of blurring.

According to the above-described second embodiment, when the power saving mode (standby state) of the camera is shifted to the shooting preparation state, even if the output of the camera shake detection device immediately after power feeding is unstable, the shooting is performed. Since the focal length is fixed on the wide side (wide end) and the change of the photographing focal length is permitted after a predetermined time has elapsed, it is possible to provide the photographer with photographing conditions that are not affected by blurring during photographing.

The third embodiment of the present invention will be described below. In the third embodiment, as shown in FIG.
The operation detection means 7 is connected to the. The operation detecting means 7 detects / determines whether or not any operation member of the camera is operated during the power saving mode (standby state). Specifically, the operation member of the camera, that is, the switch is checked from ON to OFF one by one by software, and the loop is rotated. When the operation of the camera is detected here, this information is sent to the operation state judging means 1.

The operation state determination means 1 determines that the power saving mode of the camera should be shifted to the shooting preparation state, and sends information to that effect to the camera control means 3. In response to this, the camera control means 3 controls the power supply ON of the camera shake detection device 8 by the power supply means 4 as described above, and the predetermined time on the wide side (wide end) of the focal length optical system 9 by the focal length changing means 5. Perform fixed control.

As described above, when the camera power saving mode (standby state) is changed to the shooting preparation state, even if the output of the camera shake detection device immediately after power feeding is unstable, the shooting focal length is wide (wide). Since it is fixed at the end) and the change of the photographing focal length is permitted after a lapse of a predetermined time, it is possible to provide the photographer with a photographing condition that is not affected by the blur at the time of photographing.

A fourth embodiment of the present invention will be described below with reference to FIGS. 4, 5, 6, and 7. FIG. 5 is a specific configuration diagram of the camera capable of blur correction according to the fourth embodiment. The same parts as those in FIGS.
Detailed description is omitted.

The camera control means 3, which is the center of control, includes
In addition to those described with reference to FIGS. 1 to 3, a first photometric unit 14a for measuring exposure conditions at the time of shooting, and a first photometric unit 14
Second photometric means 14b for performing photometry in a range narrower than a
And distance measuring means 15 for measuring the focus state at the time of shooting,
A 1RSW 16 for receiving a first release signal for starting a photometric / distance measuring operation of the camera, and a 2RSW 17 for receiving a second release signal for starting an actual shooting;
Focal length change instructing means 18 for accepting a change in focal length from a photographer, exposure means 19 including a quick return mirror and a shutter device for performing an actual exposure operation, and film winding / rewinding operation. The film driving means 20 for performing the above is connected to the focal length information detecting means 21 constituted by a photo interrupter or the like for detecting the current focal length information.

Further, the operation state determination means 1 is connected to both the time counting means 6 described in the description of FIG. 2 and the operation detection means 7 described in the description of FIG. Next, the blocks related to blur detection / correction will be described. Information on the camera shake detected by the camera shake detection device 8 is sent to the camera shake correction control means 11. Here, the image movement speed / amount etc. on the image plane is calculated by the shake based on the camera shake information, and the drive speed / amount of the shake correction device for correcting the image shake due to the camera shake is determined. Also, the camera control means 3
The drive timing of the shake correction device is controlled based on the information from the.

The shake correction device drive means 12 is driven by receiving drive information from the shake correction control means 11 described above, and is specifically constituted by an actuator such as a DC motor and a voice coil. Then, the driving force generated by the shake correction device driving means 12 is the shake correction device 13
Be transmitted to. The blur correction device 13 is arranged in the photographing optical system in order to correct the image blur caused by camera shake. Specifically, the image movement is realized by tilting the parallel plate glass or decentering (shifting) a part of the lens.

Next, a camera capable of blur correction according to the fourth embodiment will be described with reference to FIG. In FIG. 4, 4
1 is a camera body main body, 42 is a penta prism, 43 is a quick return mirror, 44 is a shutter device, and 45 is a shutter device.
Is a film, 46 is a screen matte, and 47 is a viewfinder. An alternate long and short dash line in the figure represents an optical path, and the optical path is also guided from the half mirror portion of the quick return mirror 43 to the distance measuring means 15.
Further, the above-mentioned camera control means 3 may be considered to include the operation state determination means 1, the time counting means 6, and the operation detection means 7.

On the other hand, on the lens side, the lens barrel 31
Includes a photographing optical system 32, a focal length optical system 9, and a shake correction device 13. Further, as a device related to camera shake correction, a power feeding means 4, a camera shake detection device 8, a camera shake correction control means 11, and a camera shake correction device. A correction device driving means 12 is included. Further, the correction force transmission system 33 for transmitting the driving force generated by the shake correction device drive means 12, and the shake correction device 1
The shake correction lens support frame 34 for supporting the lens 3 is incorporated. Further, the camera control means 3 in the camera body 41, the power feeding means 4, and the shake correction control means 11 are electrically connected.

In FIG. 4, a camera shake detection device 8 is provided for detecting a camera shake detection device 8X for detecting a rotational camera shake about the X-axis and a camera shake detection device 8X for detecting a camera shake about the Y-axis. It is divided into a camera shake detection device 8Y. Also,
The shake correction device driving means 12 and the correction force transmission system 33 are
It is used for moving the image in the Y-axis direction on the film image plane, and is 12Y and 33 in FIG. 4, respectively.
It is designated as Y.

Then, based on the rotational camera shake speed / amount about the X axis detected by the camera shake detection device 8X, the camera shake correction device 13 supported by the camera shake correction lens support frame 34 is moved in the direction of the arrow in the figure. Is driven (tilted). As a result, the amount of image movement due to the generated camera shake is corrected. Incidentally, in order to move the image in the X-axis direction on the film image plane, there are similarly the shake correction device driving means 12 and the correction force transmission system 33. Although these two are omitted in the figure, this one also performs blur correction in the same manner.

Next, the flow of specific operations of the camera capable of blur correction according to the fourth embodiment will be described with reference to the configuration diagram of FIG. 5 and the flowcharts of FIGS. In FIG. 6, the flow starts when the power is turned on. At this time,
The shake correction shooting mode is set.

First, initialization is performed in S00,
In S01, the counter contents of the clocking means 6 connected to the operation state judging means 1 are cleared. In S02, the shake correction shooting mode setting means 2 determines whether or not the camera shake correction shooting mode is selected. If the camera shake correction shooting mode is not set, the process proceeds to S7.

In this case, since the shake correction photographing mode is set by turning on the power, the determination in S02 is YES.
Then, in step S03, the power supply unit 4 is instructed to start power supply to the camera shake detection device 8. As a result, the camera shake detection device 8 starts operating from this point.

In S04, it is determined whether or not the photographing focal length is on the wide side (wide end). This is immediately after the power supply to the camera shake detection device 8 as described above, and it is not preferable to perform the camera shake correction based on this output. Therefore, when the shooting focal length is not on the wide side (wide end), the process proceeds to S05, and the focal length changing unit 5 drives the focal length optical system 9 so that the shooting focal length is set on the wide side (wide end). Then, the process returns to S04. Next, since the photographing focal length is on the wide side (wide end) this time, the process proceeds to S06.

In S06, a flag is set to prohibit the change of the photographing focal length. In S07, it is determined whether or not the output state of the camera shake detection device 8 is stable. This may be determined to be stable when a predetermined time elapses after the power supply to the camera shake detection device 8 is started, or may be determined from the output state of the camera shake detection device 8. If not stable, proceed to S09.

If it is determined in S07 that the output of the camera shake detection device 8 is stable, the process proceeds to S08 and S06.
The flag for prohibiting the change of the photographing focal length set in step 3 is reset and the focal length can be changed.

In S09, the content of the counter of the time measuring means 6 is incremented. In S10, it is determined whether or not the content of the counter of the time measuring means 6 is incremented in S09 to a predetermined value, that is, whether or not the operation members (release button, zoom button, mode setting dial, etc.) of the camera have been operated for a predetermined time. I do.

If it is determined that the operation has not been performed for the predetermined time, the process proceeds to S44, and if the operation has not been performed for the predetermined time (that is, the operation is intermittent, it is determined that the shooting preparation state is set), the process proceeds to S11. The predetermined time here may be, for example, 2 minutes or 5 minutes.

Next, in S10, a case where the operation member of the camera is not operated for a predetermined time will be described.
In S44, the shake correction shooting mode setting means 2 determines whether the shooting mode is the shake correction shooting mode.

If the camera shake correction photographing mode is not set, the process proceeds to S47. When the camera shake correction photographing mode is selected in S44, the power supply unit 4 is instructed to stop the power supply to the camera shake detection device 8 in S45. As a result, the camera shake detection device 8 has an output of 0 volt from this point, and the output signal becomes independent of camera shake.

In S46, the focal length changing means 5 drives the focal length so that the focal length of the focal length optical system 9 is on the wide side (end). In S47, the camera enters a power saving mode in which the power consumption of the camera is minimized. In this power saving mode, for example, the photometric device, the distance measuring device, the display in the finder, the external display, the charging of the strobe, etc. are stopped. Then, it is only determined whether or not any one of the operation members of the camera is operated.

In S48, only when there is information that any one of the operation members of the camera is operated in S47, S
Go to 01. If the camera is not operated, the process returns to S47 and the power saving mode is continued.

Next, in S10, the case where the operating member of the camera is not operated for less than the predetermined time will be described. In S11, the focal length change instruction means 1
It is determined whether there is a focal length tele side operation by 8. When there is an operation, the process proceeds to S12, and when there is no operation, the process proceeds to S13.

In step S12, the shake correction shooting mode setting means 2 determines whether or not the camera shake correction shooting mode is selected. If the camera shake correction shooting mode is not selected here, the process proceeds to S14.

In S13, it is judged whether or not a flag for prohibiting the change of the focal length is set. Here, if the flag for prohibiting the change of the focal length is set, the process proceeds to S17. In S14, the driving of the focal length optical system 9 to the tele side by the focal length changing means 5 is started.

In S15, it is determined whether or not the continuous operation of the focal length change instructing means 18 is performed. If the operation is continuing, S17 is repeated. If the focal length change instructing means 18 is continuously operated and the focal length optical system 9 reaches the wide end and the tele end, the focal length optical system 9 is driven before proceeding to S18 described below. Is stopped.

If the focal length changing operation is stopped, S
In step 18, the driving of the focal length optical system 9 by the focal length changing means 5 is stopped. In S19, the operation state determination means 1
The content of the counter of the time measuring means 6 connected to is cleared and the process proceeds to S20.

Next, a case will be described in which there is no focal length telephoto side operation by the focal length change instructing means 18 in S11. In S15, the focal length change instruction means 18
It is determined whether or not there is an operation on the wide side of the focal length. When there is an operation, the process proceeds to S16, and when there is no operation, the process proceeds to S19.

In S16, the focal length changing means 5 starts driving the focal length optical system 9 to the wide side. Then, the process proceeds to S17. Next, the description from S20 will be described with reference to FIG.

In S20, it is determined whether or not any of the operation members (release button, zoom button, mode setting dial, etc.) of the camera is operated. here,
If there is any operation, the process proceeds to S21, and if not, the process proceeds to S22.

At S21, the contents of the counter of the clocking means 6 connected to the operation state judging means 1 are cleared, and S22 is executed.
Proceed to. In S22, it is determined whether or not the first release signal is input by the 1RSW 16. Here, when the first release signal is not input, the process proceeds to S42.

In S23, as in S21, the counter contents of the clocking means 6 connected to the operation state judging means 1 are cleared. In S24, the shake correction shooting mode setting means 2
Thus, it is determined whether or not the camera shake correction shooting mode is selected. If the camera shake correction shooting mode is not set here, the calculation related to the image blur described later is unnecessary, so S
Proceed to 27. In S25, it is checked which focal length state the focal length optical system 9 is currently in. This is performed by the focal length information detection means 21.

At S26, the current image blur speed / amount is calculated from the output of the camera shake detection device 8. Note that S25
The current focal length information is sent to the shake correction control means 11 via the camera control means 3 and the image shake speed / amount is calculated.

In step S27, the photometric means 14 performs photometry to determine the exposure conditions such as the shutter speed value and the aperture value. In S28, the distance measuring unit 15 performs a distance measuring operation, and based on the distance measuring calculation result, part of the photographing optical system is moved out for focusing.

In S29, it is determined whether or not the second release signal (exposure operation start signal) is input by the 2RSW 17. If the second release signal has not been input, the process returns to S22.

If the second release signal is input in S29, it is determined in S30 whether or not the camera shake correction shooting mode is selected by the camera shake correction shooting mode setting means 2. If the camera shake correction shooting mode is not set here, there is no need to drive the camera shake correction device described later, and the process proceeds to S33. In the case of the camera shake correction shooting mode, the process proceeds to S31.

In step S31, the current image blur speed / amount is calculated from the output of the camera shake detection device 8 and the drive speed / amount of the blur correction device 13 to be described below is calculated in the same manner as in step S26. In S32, the shake correction device 13 by the shake correction device driving unit 12 is based on the calculation result in S31.
The shake correction driving operation is started.

In S33, the exposure means 19 is controlled by the camera control means 3 and the actual exposure operation is performed. S
At 34, the shake correction shooting mode setting means 2 determines whether or not the camera shake correction shooting mode is selected.
If the camera shake correction shooting mode is not set here, there is no need to drive the camera shake correction device, which will be described later, and the process proceeds to S37. In the case of the camera shake correction shooting mode, the process proceeds to S35.

In S35, the current image blur speed / amount is calculated from the output of the camera shake detection device 8 and the drive speed / amount of the blur correction device 13 is calculated in the same manner as in S26 and S31. This is performed in parallel with the exposure operation.

In S36, the blur correction device 13 by the blur correction device drive means 12 is based on the calculation result in S35.
The blur correction driving operation is performed in parallel with the exposure operation. S
At 37, it is determined whether a predetermined exposure time has elapsed. If the predetermined exposure time has not elapsed, S3
Return to 3 and repeat this loop.

When the predetermined exposure time has expired in S37, it is determined in S38 whether or not the camera shake compensation photographing mode is selected by the camera shake compensation photographing mode setting means 2. If the camera-shake correction shooting mode is not set, it is not necessary to stop driving and reset the camera shake correction device described later, and thus the process proceeds to step S41. In the case of the camera shake correction shooting mode, the process proceeds to S39.

In S39, the drive operation of the shake correction device 13 by the shake correction device drive means 12 is stopped. In S40, a reset operation (centering operation) is performed to bring the shake correction device 13 into a neutral position in the photographing optical system.

At S41, since exposure of one frame is completed,
The film driving means 20 performs a film winding operation. Then, the process proceeds to S42. In S42, it is continuously determined whether or not the shake correction shooting mode is selected. This is because, for example, when a shooting mode other than the camera shake correction shooting mode is selected in S20, it is not necessary to use the camera shake detection device 8.

Therefore, when the shake correction photographing mode is not selected, the process proceeds to S43, the power supply unit 4 is instructed to stop the power supply to the camera shake detection device 8, and then the process proceeds to S09. On the other hand, when the shake correction shooting mode is continuously selected, the process proceeds to S08, and the above-described loop is repeated.

The fifth embodiment of the present invention will be described below. In the above description, when the camera shake operation is not performed for a predetermined time when the shake correction shooting mode is selected and the power saving mode (standby state) is entered, the power supply of the camera shake detection device is turned off before that. , The end point distance was changed to the wide side (wide end). In addition, when shifting from the power saving mode (standby state) to the shooting preparation state, the power to the camera shake detection device is turned on and the focal length is changed for a predetermined time (until the camera shake detection device stabilizes). I had a limit.

However, in the above-mentioned one, even in the standard lens state (focal length 45 mm to 50 mm in the case of a 35 mm camera) where the influence of camera shake is relatively small,
Since the focal length is changed to the wide side (wide end), it is conceivable that the focal length is changed more than necessary, resulting in lack of rapidity. In such a case, when shifting from the shooting preparation state (normal shooting state) to the power saving mode (standby state), if the focal length at that time is shorter than the predetermined focal length, that is, it is almost the standard lens state described above. For example, the focal length is not changed to the wide side (wide end), and the power saving mode (standby state) is entered only by controlling the power OFF to the camera shake detection device.

In addition, when shifting from the power saving mode (standby state) to the shooting preparation state in accordance with this, if the focal length of the taking lens is shorter than the predetermined focal length, the focal length is moved to the wide side (wide end). Do not make any changes.

Next, the operation of the above-mentioned fifth embodiment will be described with reference to the flowchart of FIG. Note that FIG. 8 shows the fifth
It is a flowchart only about the points related to the embodiment, and is otherwise similar to FIGS. 6 and 7.

FIG. 8A shows the transition from the photographing preparation state (normal photographing upper body) to the power saving mode (standby state), and FIG. 8B shows the power saving mode (standby state to photographing preparation state). It describes the transition to.

In FIG. 8A, in S45, an instruction is sent to the power feeding means 4 to stop the power feeding to the camera shake detection device 8. In S45-1, it is determined whether the focal length of the focal length optical system 9 is shorter than a predetermined focal length (for example, standard lens state). This is determined by the information from the focal length information detecting means 21 in FIG. If the focal length is not shorter than the predetermined focal length, the process proceeds to S46, moves the focal length to the wide side (wide end), and then shifts to the power saving mode of S47. On the other hand, if the focal length is shorter than the predetermined value, the process directly proceeds to S47 and shifts to the power saving mode. See also FIG.
In (b), in S04-1, similarly to S45-1, it is determined whether the focal length of the focal length optical system 9 is shorter than a predetermined focal length (for example, standard lens state). This is determined by the information from the focal length information detecting means 21 in FIG. If the focal length is not shorter than the predetermined focal length, the process proceeds to S05 to change the focal length to the wide side (wide end). On the other hand, if the focal length is shorter than the predetermined value, S06
The process proceeds to -1 to set the focal length change prohibition flag to the tele side. Here, only the tele side is set because the focal length can be changed to the wide side (wide end), if the focal length is in the standard lens state in S04-1, and therefore the focal length is set wide from the photographer. This is to deal with the case where an operation to change to the side is input.

According to the fifth embodiment described above, if the focal length is such that camera shake is less likely to occur during the state transition, the focal length is changed to the wide side (wide end). Therefore, limit the change of focal length more than necessary,
It is possible to provide the photographer with a camera capable of image stabilization with excellent quick-shooting characteristics.

The sixth embodiment of the present invention will be described below. In the above description, when any operation member is operated in the power saving mode (standby state), S01 to S01
The processing / control as described in 09 has been performed. Of these, consider the case where the focal length telephoto side operation is performed in the power saving mode.

In the above description, when the focal length telephoto side operation is detected, the power supply to the camera shake detection device is started, and the telephoto side change of the focal length is prohibited until the output is stabilized. However, even in such a case, there may be a case in which it is desired to change the focal length as soon as possible, and there is no problem even if the change in the focal length is permitted.

In order to deal with such a situation, when the operation for changing the focal length on the telephoto side is performed in the power saving mode, only the central portion of the screen is metered (spot metering) to determine the shutter speed. If the shutter speed is faster than the above speed, that is, if the shutter speed is sufficiently high and the influence of camera shake is small, the focal length change to the tele side is permitted.

Here, the reason why the photometry (spot photometry) is performed only on the central part of the screen is that the central part of the current screen becomes the entire screen when the focal length becomes the telephoto side.
The operation of the sixth embodiment described above will be described below with reference to the flowchart of FIG. Note that FIG. 9 is a flow chart only for the points related to the sixth embodiment, and other points are the same as in FIG. 6 and FIG. 7.

In FIG. 9, in S04-1, it is determined whether or not the switch operation in S48 is the focal length telephoto side operation. Here, if they are different, the process proceeds to S04 of FIG. 6, and thereafter, the flowchart of FIG. 6 is followed. When the focal length tele side operation is performed, the process proceeds to S04-2.

In S04-2, photometry (spot photometry) is performed only on the central portion of the screen. This is because the second photometric means 14b has a narrower photometric range than the first photometric means 14a in FIG.
By.

In S04-3, the exposure calculation is performed in response to the result of S04-2, and the shutter speed aperture value is determined. In S04-4, it is determined whether the shutter speed determined in S04-3 is higher than a predetermined speed. If it is determined that the speed is lower than the predetermined speed, the process proceeds to S06, and the subsequent flow is the same as that described with reference to FIGS. 6 and 7.

On the other hand, if it is determined that the speed is high, S
Proceeding to 04-5, the photometry is switched to the first photometry means 14-1. After this, the process proceeds to S08 and thereafter, as shown in FIG.
And the flow is as described in FIG.

According to the sixth embodiment described above, when the shutter speed is assumed under the exposure condition such that camera shake is relatively unlikely to occur at the time of state transition, the focal length is fixed to the wide side (wide end). Since no operation is performed, it is possible to provide the photographer with a camera capable of correcting blurring with excellent quick-shooting property by limiting fixing of the focal length more than necessary.

As described above, according to the above embodiment of the present invention, the following constitution can be obtained. (1) In a camera capable of blur correction that corrects the image movement on the image plane based on the blur detected by the blur detection unit that detects the blur of the camera, the blur is set to a blur correction mode for performing blur correction. Correction mode setting means, power saving mode setting means for setting the camera to a power saving mode in which only the minimum functions are operated when the camera is not in use, power supply means for supplying power to the shake detection means, and photographing It comprises a focal length changing means for changing the focal length and an operation detecting means for detecting whether or not an operation related to photographing is performed, and when there is an output of the operation detecting means in the power saving mode. , The power saving mode is set to the shake correction mode, the supply from the power supply means is started, and the change of the focal length changing means is set in advance. Blur correction camera capable characterized in that so as to prohibit only constant time.

(2) A blur correction mode setting means for setting the camera to a blur correction mode for performing blur correction based on the detected blur, and a power saving mode for operating only the minimum functions when the camera is not in use. A power saving mode setting means for setting a camera to the camera, a power supply means for supplying power to the shake detecting means, a focal length changing means for changing a shooting focal length, and a shooting operation after the shake correction mode is set. And a time measuring means for measuring the time when is not performed,
When the output of the time measuring means exceeds a predetermined time, the power saving mode is set and the supply of the power supply means is reduced, and the focus is set only when the focal length is not within the predetermined range. A camera capable of blur correction, characterized in that the distance changing means is driven to a predetermined position.

(3) Based on the output of the blur detecting means,
An image stabilization mode setting unit that sets the camera to an image stabilization mode that performs image stabilization, a power saving mode setting unit that sets the camera to a power saving mode that operates only the minimum functions when the camera is not in use, and Power supply means for supplying power to the detection means, focal length changing means for changing the photographing focal length, and exposure information judging means for judging whether or not the brightness of the subject is darker than a predetermined value based on the exposure information. And an operation detecting means for detecting whether or not an operation related to photographing is performed, and when the operation detecting means outputs in the power saving mode, the power saving mode is set to the blur correction. Only when the brightness of the object is darker than a predetermined value, the change of the focal length changing means is set for a predetermined time which is set in advance while the mode is set and the power supply is started. Blur correction camera capable characterized in that so as to prohibit.

[0092]

According to the camera capable of blur correction of the present invention, the change of the focal length is prohibited only for a preset time when the power saving mode of the camera is changed to the photographing preparation state, so that the hand immediately after the power feeding is performed. Even if the output of the shake detection device is unstable, it is possible to provide the photographer with a shooting condition that is not affected by the shake during shooting.

Further, according to the camera capable of blur correction of the present invention, when the photographing operation is not performed for a predetermined time after the blur correction mode is set, the photographing focal length is driven to a predetermined focal length set in advance. Therefore, even if the output of the camera shake detection device immediately after power feeding is unstable, it is possible to provide the photographer with a shooting condition that is not affected by the shake during shooting.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a camera capable of blur correction according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a camera capable of blur correction according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a schematic configuration of a camera capable of blur correction according to a third embodiment of the present invention.

FIG. 4 is a specific configuration diagram of a camera capable of blur correction according to a fourth embodiment of the present invention.

FIG. 5 is another configuration diagram of a camera capable of blur correction according to the fourth example.

FIG. 6 is a front part of the flowchart for explaining the operation of the camera capable of blur correction according to the fourth embodiment of the present invention.

FIG. 7 is a rear part of the flowchart for explaining the operation of the camera capable of blur correction according to the fourth embodiment of the present invention.

FIG. 8 is a flowchart for explaining the operation of the camera capable of blur correction according to the fifth embodiment of the present invention.

FIG. 9 is a flow chart for explaining the operation of the camera capable of blur correction according to the sixth embodiment of the present invention.

FIG. 10 is a diagram for explaining the necessity of controlling the power feeding means and the focal length changing means.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Operation state determination means, 2 ... Shake correction photography mode setting means, 3 ... Camera control means, 4 ... Electric power feeding means, 5 ... Focal distance changing means, 6 ... Time measuring means, 7 ... Operation detecting means, 8 ... Hand shake detection Apparatus, 8X ... Camera shake detection apparatus (X), 8Y ... Camera shake detection apparatus (Y), 9 ... Focal length optical system, 11 ... Shake correction control means, 12 ... Shake correction apparatus drive means, 13 ... Shake correction apparatus, 14a ... first photometric means, 14b ... second photometric means, 15 ... distance measuring means, 16 ... 1RSW, 17 ... 2R
SW, 18 ... Focal length change instruction means, 19 ... Exposure means,
20 ... Film driving means, 21 ... Focal length information detecting means, 31 ... Lens barrel, 32 ... Photographing optical system, 33 ... Correction force transmission system, 34 ... Shake correction lens support frame, 41 ... Camera body, 42 ... Penta prism , 43 ... Quick return mirror, 44 ... Shutter device, 45 ... Film, 4
6 ... Screen mat, 47 ... Finder.

Claims (3)

[Claims] 1. A camera capable of compensating an image movement on an image plane based on a blur detected by a blur detecting means for detecting a blur of a camera, the camera being set to a blur correction mode for performing a blur correction. A shake correction mode setting means, a power saving mode setting means for setting the camera to a power saving mode for operating only the minimum functions when the camera is not used, and a power supply means for supplying power to the shake detecting means. And a focal length changing means for changing a photographing focal length, which starts power supply from the power supply means when the shake correction mode is set by the shake correction mode setting means in the power saving mode. In addition, the camera capable of blur correction is characterized in that the change of the focal length changing means is prohibited only for a predetermined time set in advance. 2. A camera capable of compensating an image movement on an image plane based on a blur detected by a blur detecting means for detecting a blur of a camera, the camera being set to a blur correction mode for performing a blur correction. A shake correction mode setting means, a power saving mode setting means for setting the camera to a power saving mode for operating only the minimum functions when the camera is not used, and a power supply means for supplying power to the shake detecting means. It comprises a focal length changing means for changing the photographing focal length and a time measuring means for measuring the time during which the photographing operation is not performed after the blur correction mode is set, and the output of the time measuring means exceeds the predetermined time. In this case, the shake correction mode is set to the power saving mode, and the power supply from the power supply means is reduced or stopped to set the focal length. A correctable camera characterized in that the distance changing means is driven to a predetermined focal length set in advance. 3. The predetermined focal length set in advance is
The camera according to claim 2, wherein the wide-angle end side is set to a side closer to the telephoto side than the wide-angle end side to the extent that blurring is not affected.