JPH0756205A - Image blur preventing camera - Google Patents

Abstract

PURPOSE:To shorten time up to releasing and to sufficiently secure a correction driving stroke by permitting the start of an exposure, when a blur correcting part is driven toward the center of its driving range, with the output of the detection of a correcting position, after the release button is depressed. CONSTITUTION:The half-depressed switch of the release button 8 is turned on to apply the power source of a camera. A CPU 5 computes a proper vibrationproof driving amount through the use of blur signal outputs from presensors 1y and 1x, signal outputs from a correcting optical system position sensors 4y and 4x, etc., and outputs a drive control signal to the correction driving parts 3y and 3x, to start the vibrationproof shift driving of a blur correcting optical system 2. When the turning-on of the fully depressed switch of the release button 8 is detected, the CPU 5 detects whether the correction driving parts 3y and 3x are driven toward the center of the driving ranges of each driving part or not, from a change in the outputs of the correcting optical system position sensors 4y and 4x and starts the exposure when the blur correcting optical system 2 is driven toward the center of the driving range.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image blur preventive camera having an image blur correcting means due to camera shake or the like.

[0002]

2. Description of the Related Art Conventionally, as an image blur prevention camera of this type, for example, an image blur correction means has a limited drive range, and therefore, when the drive position is in the peripheral portion of the drive range, a correction drive stroke is used. Due to the expected shortage of
There are known ones that prohibit the exposure operation (Japanese Patent Laid-Open No. 4-95932, etc.).

[0003]

However, in the above-mentioned conventional technique, when the drive position of the image blur correction means is in the peripheral portion of the drive range and the release operation is performed, the image blur correction is performed. There is a problem that it takes time from the release operation is released until the release operation inhibition is released because the operation is performed to release the release operation inhibition after the means is once driven to the central portion of the drive range.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an image blur preventing camera which can shorten the time until the release is released and can sufficiently secure a correction drive stroke.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is to provide a blur detecting section for detecting a blur amount of a camera, and a photographing optical system in a direction in which an image on a film surface does not blur. A shake correction unit that corrects and drives a part or all of the system or a photographic film, a correction position detection unit that detects the position of the shake correction unit, and a correction amount of the shake correction unit is calculated from the output of the shake detection unit. A shake control unit that drives the shake correction unit according to the output of the correction position detection unit, and a drive direction of the shake correction unit that is driven by the output of the correction position detection unit after the release button is pressed. And an exposure control unit for permitting the start of exposure when moving toward the center of.

According to a second aspect of the present invention, there is provided a shake detecting section for detecting the amount of camera shake, and a shake correcting section for correcting and driving a part or all of the photographing optical system or the photographing film in a direction in which the image on the film surface does not shake. And a correction position detection unit that detects the position of the blur correction unit, and a correction amount of the blur correction unit is calculated from the output of the blur detection unit, and the blur correction unit is operated according to the output of the correction position detection unit. A shake control unit to be driven, and an exposure control unit to prohibit the start of exposure when the drive direction of the shake correction unit is away from the center of its drive range by the output of the correction position detection unit after the release button is pressed. It is configured as including.

According to a third aspect of the present invention, in the image blur prevention camera according to the first aspect, a plurality of the blur correction units are provided, and the exposure control unit drives each of the blur correction units in a driving direction. It is characterized in that the start of exposure is permitted when moving toward the center of the drive range.

According to a fourth aspect of the present invention, in the image blur prevention camera according to the first aspect, a plurality of blur correction units are provided, and the exposure control unit is a predetermined blur correction unit of the blur correction units. It is characterized in that the start of exposure is permitted when the drive direction of the unit is toward the center of the drive range.

According to a fifth aspect of the present invention, in the image blur prevention camera according to the fourth aspect, the driving direction of the predetermined shake correction section is a vertical direction.

According to a sixth aspect of the present invention, in the image blur prevention camera according to the fourth aspect, a posture sensor capable of determining the attitude of the camera is further provided, and the predetermined blur correction unit is driven in the gravity direction. It is characterized by being.

According to a seventh aspect of the present invention, in the image blur prevention camera according to the first aspect, a plurality of blur correction units are provided, and the exposure control unit controls the blur frequency of the blur correction unit. It is characterized in that the exposure start is permitted when the drive direction of the shake correction unit in the higher direction is toward the center of the drive range.

According to an eighth aspect of the present invention, in the image blur prevention camera according to the first aspect, the exposure control unit, when the set exposure time is shorter than a predetermined time, a predetermined period after the release button is pressed. After that, the exposure start is allowed.

According to a ninth aspect of the present invention, in the image blur prevention camera according to the eighth aspect, the predetermined time with respect to the set exposure time is approximately 1/1 / the focal length of the photographing lens.
It is characterized by a value between 4 and 16 times.

According to a tenth aspect of the present invention, in the image stabilizing camera according to the eighth aspect, the predetermined time with respect to the set exposure time is about 1 which is the focal length of the photographing lens, which is 4 times.
It is characterized by a doubled value.

According to an eleventh aspect of the present invention, in the image blur prevention camera according to the first aspect, there is provided a mode setting unit including at least an exposure mode and a film feeding mode, and the exposure control unit includes the mode setting unit. Depending on the mode setting, the exposure start is allowed after a predetermined time after the release button is pressed.

According to a twelfth aspect of the present invention, in the image stabilizing camera according to the eleventh aspect, the mode setting section allows
When the automatic winding mode is set to the continuous mode, the exposure control unit permits the exposure start immediately after the release button is pressed.

According to a thirteenth aspect of the present invention, there is provided a shake detecting section for detecting the amount of camera shake, and a shake correcting section for correcting and driving a part or all of the photographing optical system or the photographing film in a direction in which the image on the film surface does not shake. And a correction position detection unit that detects the position of the shake correction unit, and whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position within the drive range of the shake correction unit. A position determination unit that determines whether the shake correction unit calculates the correction amount of the shake correction unit from the output of the shake detection unit, and drives the shake correction unit according to the output of the corrected position detection unit; A direction determination unit that determines whether the drive direction of the shake correction unit by the control unit is an outward direction or an inward direction of the drive range of the shake correction unit, and the position determination unit determines whether the drive direction is outside after the release button is pressed. In case It, when the determination of the direction determination unit is inward, it is constituted comprising an exposure control unit that allows exposure start.

According to a fourteenth aspect of the present invention, there is provided a shake detecting section for detecting the amount of camera shake, and a shake correcting section for correcting and driving a part or all of the photographing optical system or the photographing film in a direction in which the image on the film surface does not shake. And a correction position detection unit that detects the position of the shake correction unit, and whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position within the drive range of the shake correction unit. A position determination unit that determines whether the shake correction unit calculates the correction amount of the shake correction unit from the output of the shake detection unit, and drives the shake correction unit according to the output of the corrected position detection unit; A direction determination unit that determines whether the drive direction of the shake correction unit by the control unit is an outward direction or an inward direction of the drive range of the shake correction unit, and the position determination unit determines whether the drive direction is outside after the release button is pressed. In case It, when the determination of the direction determination unit is outward, it is constituted comprising an exposure control unit that prohibits start of exposure.

According to a fifteenth aspect of the present invention, there is provided a shake detecting section for detecting the amount of camera shake, and a shake correcting section for correcting and driving a part or all of the photographing optical system or the photographing film in a direction in which the image on the film surface does not shake. And a correction position detection unit that detects the position of the shake correction unit, and whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position within the drive range of the shake correction unit. A position determination unit that determines whether the shake correction unit calculates the correction amount of the shake correction unit from the output of the shake detection unit, and drives the shake correction unit according to the output of the corrected position detection unit; and a release button. After the button is pressed, if the position determination by the position determination unit is inside, an exposure control unit that prohibits the start of exposure is included.

According to a sixteenth aspect of the present invention, there is provided a shake detecting section for detecting the amount of camera shake, and a shake correcting section for correcting and driving a part or all of the photographing optical system or the photographing film in a direction in which the image on the film surface does not shake. And a correction position detection unit that detects the position of the shake correction unit, and whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position within the drive range of the shake correction unit. A position determination unit that determines whether the shake correction unit calculates the correction amount of the shake correction unit from the output of the shake detection unit, and drives the shake correction unit according to the output of the corrected position detection unit; and a release button. After the button is pressed, when the position determination by the position determination unit is inside, an exposure control unit that permits the start of exposure is included.

According to a seventeenth aspect of the present invention, there is provided a shake detecting section for detecting the amount of camera shake, and a shake correcting section for correcting and driving a part or all of the photographing optical system or the photographing film in a direction in which the image on the film surface does not shake. And a correction position detection unit that detects the position of the shake correction unit, and whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position within the drive range of the shake correction unit. A position determination unit that determines whether the shake correction unit calculates the correction amount of the shake correction unit from the output of the shake detection unit, and drives the shake correction unit according to the output of the corrected position detection unit; A speed determination unit that determines whether the drive speed of the shake correction unit by the control unit is higher than a predetermined determination value, and a case where the position determination unit determines that the position is inside after the release button is pressed. There When a large speed determination by the speed judgment section, it is constituted comprising an exposure control unit that prohibits start of exposure.

According to an eighteenth aspect of the present invention, there is provided a shake detecting section for detecting the amount of camera shake, and a shake correcting section for correcting and driving a part or all of the photographing optical system or the photographing film in a direction in which the image on the film surface does not shake. And a correction position detection unit that detects the position of the shake correction unit, and whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position within the drive range of the shake correction unit. A position determination unit that determines whether the shake correction unit calculates the correction amount of the shake correction unit from the output of the shake detection unit, and drives the shake correction unit according to the output of the corrected position detection unit; A speed determination unit that determines whether the drive speed of the shake correction unit by the control unit is higher than a predetermined determination value, and a case where the position determination unit determines that the position is inside after the release button is pressed. There When the speed determined by the speed determination unit is small, a configuration including an exposure control unit that allows exposure start.

According to a nineteenth aspect of the present invention, in the image blur prevention camera according to the seventeenth aspect or the eighteenth aspect, the determination value used by the speed determination unit is C, the determination value used by the position determination unit, and the blur correction. When the upper limit of the drive range of the unit is 1, it is a numerical value corresponding to a value obtained by dividing (1-C) by the exposure time at the time of shooting.

According to a twentieth aspect of the present invention, there is provided a blur detecting section for detecting a camera shake amount, and a blur correcting section for correcting and driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not blur. And a correction position detection unit that detects the position of the shake correction unit, and whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position within the drive range of the shake correction unit. A position determination unit that determines whether the shake correction unit calculates the correction amount of the shake correction unit from the output of the shake detection unit, and drives the shake correction unit according to the output of the corrected position detection unit; In the case where the position determination by the position determination unit is outside after a speed determination unit that determines the driving direction and speed of the shake correction unit by the control unit and a predetermined determination value, and the release button is pressed, The speed Than the rate the rate decision is a predetermined outward by tough, when it is not faster outward speed, a structure comprising an exposure control unit that allows exposure start.

According to a twenty-first aspect of the present invention, there is provided a blur detection unit for detecting the amount of blur of the camera, and a blur correction unit for correcting and driving a part or all of the photographing optical system or the photographing film in a direction in which the image on the film surface does not blur. And a correction position detection unit that detects the position of the shake correction unit, and whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position within the drive range of the shake correction unit. A position determination unit that determines whether the shake correction unit calculates the correction amount of the shake correction unit from the output of the shake detection unit, and drives the shake correction unit according to the output of the corrected position detection unit; In the case where the position determination by the position determination unit is outside after a speed determination unit that determines the driving direction and speed of the shake correction unit by the control unit and a predetermined determination value, and the release button is pressed, The speed Than the rate the rate decision is a predetermined outward by tough, when a faster outward speed of,
And an exposure control unit for prohibiting the start of exposure.

According to a twenty-second aspect of the present invention, in the image blur prevention camera according to any of the thirteenth to twenty-first aspects, the determination position of the position determination unit is, when the drive range of the shake correction unit is ± 1, It is characterized by a predetermined value of ± 1/4 or less.

According to a twenty-third aspect of the present invention, there is provided a shake detecting section for detecting the amount of camera shake, and a shake correcting section for correcting and driving a part or all of the photographing optical system or the photographing film in a direction in which the image on the film surface does not shake. And a correction position detection unit that detects the position of the blur correction unit, and a correction amount of the blur correction unit is calculated from the output of the blur detection unit, and the blur correction unit is operated according to the output of the correction position detection unit. A shake control unit that drives, a correction speed detection unit that detects the direction and speed of driving of the shake correction unit by the shake control unit, position information detected by the correction position detection unit, and detection by the correction speed detection unit. Based on the speed information, a range-excess predicting unit that predicts an excess of the driving range of the shake correction unit in the exposure-exposure time of the camera, and When the excess drive range of the shake correction unit is not expected, it is constituted comprising an exposure control unit that allows exposure start.

According to a twenty-fourth aspect of the present invention, there is provided a shake detecting section for detecting the amount of camera shake, and a shake correcting section for correcting and driving a part or all of the photographing optical system or the photographing film in a direction in which the image on the film surface does not shake. And a correction position detection unit that detects the position of the blur correction unit, and a correction amount of the blur correction unit is calculated from the output of the blur detection unit, and the blur correction unit is operated according to the output of the correction position detection unit. A shake control unit that drives, a correction speed detection unit that detects the direction and speed of driving of the shake correction unit by the shake control unit, position information detected by the correction position detection unit, and detection by the correction speed detection unit. Based on the speed information, a range-excess predicting unit that predicts an excess of the driving range of the shake correction unit in the exposure-exposure time of the camera, and When driving over range of the shake correction unit is expected, it is constituted comprising an exposure control unit that prohibits start of exposure.

[0029]

According to the present invention, after the release button is pressed, when the drive direction of the shake correction unit is toward the center of the drive range, when the shake correction unit is outside the determination position and inward, the shake correction unit When the part is inside the determination position and the determination speed is low, when the shake correction unit is outside the determination position and not at a higher outward speed, when the drive range of the shake correction unit is not expected to exceed, etc. Since the exposure is started, it is possible to start the exposure operation more quickly than releasing the release prevention after completing the operation in which the shake correction unit once returns to the center of the drive range as in the conventional technique. It is possible to reduce the release time lag that the photographer dislikes. In addition, when the driving direction of the shake correction unit is toward the center of the drive range, the driving stroke of the shake correction unit can be large, so that the possibility of deviation from the drivable range during exposure is reduced, and Good image blur prevention is possible. Further, since the exposure operation is started immediately depending on the condition such as when the exposure time set in the camera is relatively short, it is possible to eliminate an unnecessary release time lag.

[0030]

Embodiments will be described in more detail below with reference to the drawings and the like. 1 and 2 are a side view and a front view schematically showing a first embodiment of a camera with an image blur prevention function according to the present invention. The pitch shake sensor 1y is a sensor that detects a shake in the pitch direction with respect to the optical axis of the camera. For example, a vibration type angular velocity sensor can be used, and its output is a camera CPU described later.
Connected to 5. The yaw shake sensor 1x is a sensor that detects shake in the yaw direction with respect to the optical axis of the camera (see FIG. 2), and its output is connected to the camera CPU 5.

The blur correction optical system 2 is for correcting the image blur by shifting the image forming lens. The Y-direction correction drive unit 3y is a mechanism unit that shifts and drives the shake correction optical system 2 in the vertical direction of the camera. X-direction correction drive unit 3x
Is a mechanism portion for driving the camera shake correction optical system 2 to shift in the lateral direction of the camera (see FIG. 2). The Y-direction correction drive unit 3y and the X-direction correction drive unit 3x are independently driven and controlled by the camera CPU 5 described later.

The correction optical system Y position sensor 4y is for detecting the vertical shift position of the shake correction optical system 2 (see FIG. 2), and its detection signal is output to the camera CPU 5. The correction optical system X position sensor 4x is for detecting the lateral shift position of the shake correction optical system 2 (see FIG. 2), and its detection signal is output to the camera CPU 5.

The camera CPU 5 has blur sensors 1y, 1
The image blur amount is calculated from the blur output of x, the vertical and horizontal shift amounts of the corresponding blur correction optical system 2 are calculated, and correction drive is performed while monitoring the outputs of the correction optical system position sensors 4y and 4x. By controlling the units 3y and 3x, the shake correction optical system 2 is shifted by an appropriate amount. Besides, camera CPU5
Is connected to the shutter 7, the release button 8, the mode setting dial 9, etc., and also performs general sequence control of the camera, AF and AE calculations.

The shutter 7 is a so-called lens shutter and also serves as a photographing diaphragm. The operation of the shutter 7 is also controlled by the signal from the camera CPU 5. The release button 8 incorporates a two-step switch of a half-press switch and a full-press switch, both of which are connected to the camera CPU 5. When the half-push switch is turned on, a shooting preparation operation such as power-on of the camera is started, and when the full-push switch is turned on, an exposure operation is started.

The mode setting dial 9 is used for setting a manual mode in which the shutter time is determined by the photographer's setting, an exposure mode such as a program mode in which the shutter time and the shooting aperture are uniquely determined by the camera according to the brightness of the subject, and the like. Setting of automatic winding mode such as single mode in which only one frame is exposed by the full-press operation of the release button 8 and continuous mode in which multiple frames are continuously exposed while the release button 8 is fully pressed. Is a dial for setting various operation modes of the camera. The output of the mode setting dial 9 is the camera CPU 5
It is connected to and outputs the setting signal of each mode. In addition, 6 is a film and 10 is a camera body.

FIG. 3 is a flow chart showing the operation sequence of the camera of the present invention described with reference to FIGS. It should be noted that unless otherwise specified, the processing is performed by the camera CPU 5. In step (hereinafter abbreviated as S) 100, the half-push switch of the release button 8 is turned on to turn on the camera power and start the routine. In step S110, an appropriate image stabilization drive amount is calculated using the shake signal outputs from the shake sensors 1y and 1x, the signal outputs from the correction optical system position sensors 4y and 4x, and the correction drive units 3y and 3x.
Then, a drive control signal is output to start the image stabilization shift driving of the shake correction optical system 2. In S120, it is detected whether or not the full-push switch of the release button 8 is on. If the full-press switch is not on, the operation remains at this step.
Proceed to 130.

In step S130, it is detected from the change in the outputs of the correction optical system position sensors 4y and 4x whether or not the correction drive units 3y and 3x are driven toward the center of the drive range of each drive unit.

FIG. 4 is a flow chart for explaining the details of the drive direction determination of each drive unit performed in S130. For the sake of simplicity, only the determination procedure in the Y direction will be described. The same applies to the X direction. Unless otherwise noted, camera CPU 5
This is the process performed in. In S310, the output signal of the correction optical system position sensor 4y is input. This position information is W
Let y. In S320, the output signal information of the correction optical system position sensor 4y at the time of the previous detection is obtained. This is S1
10, the output signal information of the correction optical system position sensor 4y detected in S120 can be stored in the storage unit of the camera CPU 5 or the like. This previous position information is Wyo.

In the next S330, first, it is determined whether or not Wy> 0. Here, "0" means the Y-direction correction drive unit 3y.
It is the center point of the movement range of the shake correction optical system 2 driven by. When Wy is (+), it means that the shake correction optical system 2 is above the center point of the moving range, and
Is a case where the shake correction optical system 2 is below the center point of the moving range. If Wy> 0, the process proceeds to S340, and if not Wy> 0, S35.
Go to 0.

First, S340 will be described. In S340, it is determined whether or not Wy <Wyo. Since Wy is (+), when Wy <Wyo holds,
This is the case where the shake correction optical system 2 is driven from the upper side toward the center point. In this case, there is a margin of at least half of the movement range in the direction in which it is expected to be driven in the future. Therefore, if the exposure is started in this state, the vibration-proof drive stroke during the exposure can be increased. S340
In, when Wy <Wyo holds, S130
Ends and the process proceeds to S140.

In S340, when Wy <Wyo does not hold, it means that the shake correction optical system 2 is already above the center point and is driven further upward.
In this case, the direction that can be expected to be driven in the future, even if many estimates are made, has a margin of less than half of the moving range. Therefore, in this case, if the shift to the exposure operation is postponed, S13
Without terminating 0, the information is exchanged as Wyo = Wy in S370, and the process returns to S310.

Next, the case of proceeding from S330 to S350 will be described. In S350, it is determined whether Wy <0. If Wy <0 does not hold,
This is when Wy = 0. In this case, there is a margin of half of the movement range in the direction that is expected to be moved in the future. In this case, the exposure may be generally performed. Therefore, S13
0 is terminated and the process proceeds to S140. However, when Wy = 0, it is an extremely rare probability, and it is possible to start the exposure operation in general. Of course, it is safe to cancel the exposure operation from the viewpoint of image blur prevention. Since it is on the side, either treatment is acceptable.

When Wy <0 is established in S350, the process proceeds to S360. In S360, it is determined whether Wy> Wyo. Since Wy is (-), Wy> Wy
When o is satisfied, the shake correction optical system 2 is driven from below toward the center point. In this case, there is a margin of at least half of the movement range in the direction in which it is expected to be driven in the future. Therefore, if the exposure is started in this state, the anti-vibration drive stroke during the exposure can be increased. When Wy <Wyo is satisfied in S340, S130 is ended and the process proceeds to S140.

In S360, when Wy> Wyo is not established, the shake correction optical system 2 is already below the center point and is further driven downward. In this case, there is only a half or less of the movement range, even if many estimates are made in the direction expected to be driven in the future. Therefore, in this case, the shift to the exposure operation is postponed and S
Without ending 130, in S370, Wyo = Wy
And the information is exchanged, and the process returns to S310.

The drive direction determination of the Y-direction drive unit has been described above, but the condition for ending S130 and advancing to S140 is only when the condition for advancing to S140 in both the Y and X directions is satisfied. , S140 is an appropriate determination from the viewpoint of image blur prevention. In this embodiment, this determination is adopted.

In the first routine, S37
In order to substitute the initial value of Wyo at 0, it is advisable to unconditionally proceed to S370 and "A" after S320.

Here, the description returns to FIG. After passing through S130 described above, in S140, the shutter 7
To open a series of exposure operations and start a series of exposure operations. Here, the exposure operation means the start of exposure of the film 6. The focusing operation of the lens, which is not directly related to the start of the exposure of the film 6, and the mirror-up operation of the single-lens reflex camera, which is different from this embodiment, are performed before reaching S140. Of course it does not matter.

After S140, in S150, it is determined whether or not the conditions for ending the exposure such as the passage of the shutter time are satisfied. If the conditions are satisfied, the light-shielding operation control for the shutter 7 is performed in S160. The exposure operation is ended, then the image stabilization drive is ended in S170, and the process proceeds to S180 to end a series of photographing operations.

As described above, since the exposure is started when the drive direction of the blur correction optical system 2 moves toward the center of the drive range after the release button is pressed, it can be expected to be driven in the future. There is a margin of at least half of the movement range in the direction, and a large image stabilization drive stroke during exposure can be achieved.

FIG. 5 shows the Y-direction and X-direction of the shake correction optical system 2.
It is a figure which shows the relationship of the position change of a direction, a release button operation, and exposure start timing. In this embodiment, the process proceeds to S140 only when the condition for proceeding from S130 to S140 is satisfied in both the Y direction and the X direction.
As shown in the figure, the exposure starts after t1 hours from the time when the full-press switch of the release button 8 is turned on. Note that, for example, hand-held camera shake in the vertical direction is usually several Hz.
Has a large vibration component, and delaying the start of exposure until the above-described conditions are satisfied does not pose a practical problem.

The present invention is not limited to the first embodiment. For example, a normal hand-held camera shake has a relatively large vertical shake, and a horizontal shake often becomes a slow shake. Therefore, the vertical image shake is often a problem. Therefore, if the condition for proceeding from S130 to S140 only in the Y direction is satisfied, X
It is also possible to start the exposure regardless of the direction state. Figure 4
An example is the case where the exposure is started after t2 hours. In addition, a posture sensor capable of determining whether the camera is in the horizontal position or the vertical position is added to the camera of the present invention, and the gravity direction (in the case of the horizontal position, the camera Y direction;
For reference, in the case of the vertical position, the exposure permission / non-permission determination may be performed as described above with respect to the camera X direction; see FIG.

When the shutter time set by the photographer or the shutter time determined by the subject brightness is high speed, the full-press switch of the release button 8 is turned on regardless of the above conditions. From the point of time, the exposure may be started in the shortest possible time as the camera operation.
This determination is preferably performed at a shutter speed of, for example, about 4 times as long as one of the focal lengths of the photographing lens, as a boundary.

Of course, the value is not limited to this value, and is applied to the mode setting dial 9 so that the shutter speed at the boundary can be changed with the focal length of the photographing lens being 1 to 16 times the focal length. You may add a function. In addition, depending on the skill of the photographer and the shooting conditions, when a considerable camera shake is expected, etc., the shutter speed of 1 to 1/4 of the focal length of the shooting lens can be set as a boundary. An application function may be added to the setting dial 9. Furthermore, it may be changed according to the setting of each shooting mode.

Further, when the automatic winding mode is set to the continuous mode, in order to increase the frame feed speed, the camera is operated as much as possible from the time when the full-push switch of the release button 8 is turned on regardless of the above conditions. The exposure may be started in a short time. It should be noted that exposure in which the driving direction of the blur correction optical system 2 moves away from the center of the driving range may be prohibited.

Further, regarding the flow in S130, as described above (see [0024]), when Wy = 0, S
Instead of the “proceed to 140” flow, from the viewpoint of ensuring a correction drive stroke, “when Wy = 0, the exposure operation is suspended (that is, the process returns from S370 to“ A ”)”. FIG. 10 shows such S1
14 is a flowchart illustrating an application example in 30. Since the contents of each step are the same as those in FIG. 4, description thereof will be omitted.

FIG. 6 is a flow chart for explaining the operation of the second embodiment of the camera with the image blur prevention function according to the present invention.
Further, since the steps described here correspond to the contents of S130 of FIG. 4 of the first embodiment, the portions already described in the configuration and FIG. 4 are given the same reference numerals and step numbers, and description thereof will be omitted. For simplicity, only the Y-direction determination procedure will be described.

In the second embodiment, it is determined in S335 that follows S310 and S320 whether or not Wy> C. Here, “C” is a predetermined (+) value. When Wy> C is satisfied, it means that the shake correction optical system 2 is further above the center point of the movement range by adding “C”. Therefore, the condition for proceeding from S335 to S340 and then to S140 is that the drive is being performed from the upper side toward the center point, and there is a margin of at least half of the movement range + C or more in the direction that can be expected to be driven in the future.

The information on the predetermined value "C" may be stored in advance in the storage portion of the camera CPU 5, for example. Further, the information regarding the value “C” may be information that changes according to shooting conditions and the like, as described later. Further, it may be a value calculated by the camera CPU 5 according to shooting conditions or the like, or calculated by multiplying a predetermined stored value by a coefficient.

Similarly, the condition for proceeding from S355 (determination of Wy <-C) to S140 through S360 is that the vehicle is driven from the lower side toward the center point, and at least in the movement range in the direction in which it can be expected to be driven in the future. This is the case where there is a margin of more than half + C.

Further, the condition for proceeding to S370 without satisfying Wy <-C in S355 is irrespective of the driving direction.
This is the case where C <Wy <C. In this case, a minimum margin of -C of the movement range is expected in the direction that can be expected to be driven in the future. In this case, although it depends on the size of C, it is considered that the drive margin is not half, and here, the shift to the exposure operation is postponed, and S130 is not ended but S37 is completed.
At 0, the information is exchanged with Wyo = Wy. The value of this “C” is within ± 1 of the moving range of the normal shake correction optical system 2.
Then, a value of ¼ or less is appropriate. The reason for this is that if the value of "C" is set too large, the release time lag may unnecessarily increase. If the value of "C" is considerably small (for example, 1/8 or less when the moving range is ± 1), S
355, even if Wy <-C is not established, S1
It is also possible to end 30 and proceed to S140.

FIG. 11 is a flow chart for explaining an application example of proceeding to S140 when the condition of Wy is −C ≦ Wy ≦ C. Since the contents of each step are the same as those in FIG. 6 described above, the description thereof will be omitted.

The value of "C" described in FIG. 6 is
The shutter time set by the photographer or the shutter time set by the subject may be automatically changed. For example, when the shutter speed at the time of shooting is set to 4 times the focal length of the shooting lens, the value of "C" is 1/4 to 1/8 on the scale of the previous moving range.
The value of "C" may be set to be small when the shutter speed is set to a high speed, and the value of "C" may be set to be large when the shutter speed is set to a low speed. The ratio of the change in the shutter speed to the change in the setting of “C” may be simply proportional to or may be proportional to the square root (route) of the change rate in the shutter speed. It may be another relationship obtained by experiments or the like. You may make it change according to the setting of each photography mode.

Further, in the case of FIG. 11 which is an application example, contrary to the above, the value of "C" is set to about 1/4 to 1/8 on the scale of the previous movement range, and the shutter time is The value of "C" may be set to be large when the setting is high, and the value of "C" may be set small when the setting for shutter speed is low. The ratio of the change in shutter speed to the change in the setting of "C" may be simply inversely proportional, or may be inversely proportional to the square root (route) of the change rate in shutter speed. It may be another relationship obtained by experiments or the like. You may make it change according to the setting of each photography mode.

FIG. 12 is a flow chart for explaining an application example of the second embodiment of the image stabilizing camera according to the present invention. In addition,
Steps similar to those in FIG. 6 are denoted by the same reference numerals, and duplicate description is omitted. In the embodiment of FIG. 12, the Wy condition is −
This is an example in which, when C ≦ Wy ≦ C, it is determined whether or not to proceed to S140 in consideration of the moving speed of the shake correction optical system 2. When it is determined to be “NO” in S355, the condition of Wy is −C ≦ Wy ≦ C, and in that case, the process proceeds to S365. In S365, the value of | Wy-Wyo | is compared with the constant "f" relating to the predetermined speed. This value is the absolute value of the value obtained by subtracting the previous position information Wyo from the current position information Wy, and is the movement amount of the shake correction optical system 2 in a predetermined time required for one operation of the routine in S130, that is, the shake correction. This is information regarding the moving speed of the optical system 2.
If this absolute value is less than the predetermined value “f”, it is considered that the correction drive range has a sufficient margin when the condition of Wy is −C ≦ Wy ≦ C. Therefore, the process proceeds to S140 and the exposure is permitted. . On the contrary, if this absolute value is greater than or equal to the predetermined value "f",
Since the margin of the correction drive range is considered to be insufficient,
Return to "A '".

The constant "f" used as the judgment condition in S365 is
Further, the shutter speed setting at the time of shooting may be automatically changed. When the moving range of the shake correction optical system 2 is set to ± 1, if the numerical value of “f” corresponding to the speed obtained by dividing the value of (1-C) by the shutter speed is set, it is determined as S365. preferable. When the position of the shake correction optical system 2 is Wy, the set value of the above “f” is the movement of the shake correction optical system 2 even if the movement is continued outward at the current moving speed for the shutter time. It is the value of the condition that the range is not exceeded. Of course, the setting of the value of “f” is not limited to the above, and may be a value obtained by multiplying the above numerical value by an empirically obtained coefficient (for example, × 0.7 to × 1.4). Alternatively, another value may be obtained in advance by experiments or the like, or may be changed according to the setting of each shooting mode.

13 and 14 are flow charts showing an application example in which the embodiment of FIG. 12 is further developed. 13 and 14
In the above example, the Wy conditions are finely divided, and predetermined constants “C”, “D”, and “E” (1 ≧ C ≧ D ≧ E ≧ when the moving range of the shake correction optical system 2 is ± 1). 0) is used as the judgment condition. Also, the constant related to speed is "h",
It is used as a judgment condition of “g” (0 ≦ h ≦ g). In addition,
Steps similar to those in FIG. 12 and the like are denoted by the same reference numerals, and duplicate description is omitted.

In S336, it is determined whether Wy> D. If “Yes”, D <Wy ≦ C, and S36.
Go to 1. If “No”, the process proceeds to S337. S36
In step 1, "Wy-Wyo" is compared with "h". Wy-W
If yo> h, the outward movement speed of the blur correction optical system 2 is higher than a predetermined value, so that exposure is not started and “A ′”
Return to. If not Wy-Wyo> h, the process proceeds to S140 and the exposure operation start is permitted. This numerical value of “h” is (1-C) when the movement range of the shake correction optical system 2 is ± 1.
It is preferable for the determination in step S361 to set the value of <1> to the value corresponding to the speed obtained by dividing the value by the shutter speed. The reason for this is the same as described with reference to FIG.

In S337, it is determined whether Wy> E. If “Yes”, E <Wy ≦ D, and S36.
Go to 2. If “No”, the process proceeds to S351. S36
In step 2, "Wy-Wyo" and "g" are compared. Wy-W
If yo> g, the outward movement speed of the blur correction optical system 2 is higher than a predetermined value, and therefore, exposure is not started and “A ′”
Return to. If not Wy-Wyo> g, the process proceeds to S140 and the exposure operation start is permitted. This value of "g" is (1-D) when the movement range of the shake correction optical system 2 is ± 1.
It is preferable for the determination in S362 to set a value corresponding to the speed of the value obtained by dividing the value of by the shutter speed. The reason for this is the same as in S361.

In S351, it is determined whether or not Wy <-E. If “No”, −E ≦ Wy ≦ E, and the shake correction optical system 2 is near the center of the moving range.
The process proceeds to 0 and the exposure operation start is permitted. If “Yes”, the process proceeds to S352. In S352, it is determined whether Wy <-D. If “No”, −D <Wy ≦ −E, and the process proceeds to S366. If “Yes”, the process proceeds to S355. In step S366, "Wy-Wyo" and "-g" are compared. If Wy−Wyo ≦ −g, the outward movement speed of the blur correction optical system 2 is higher than a predetermined value, and therefore the exposure is not started and the process returns to “A ′”. If not Wy−Wyo ≦ −g, the process proceeds to S140 and the exposure operation start is permitted. "-G"
Also, it may be set in the same manner as the above S362.

If C <Wy ≦ -D, the process proceeds from S355 (explanation omitted) to S367. In S367, "Wy-W
Compare "yo" and "-h". If Wy−Wyo ≦ −h, the outward movement speed of the blur correction optical system 2 is higher than a predetermined value, and therefore the exposure is not started and the process returns to “A ′”. W
If y−Wyo ≦ −h is not satisfied, the process proceeds to S140 and the exposure operation start is permitted. "-H" may be set in the same manner as S361.

From the above, from the condition of Wy and the outward movement speed of the shake correction optical system 2, the shake correction optical system 2 is driven even when the shake correction optical system 2 is driven outward. Under conditions where the range is unlikely to be exceeded, the start of exposure can be permitted. By this,
The delay time from the time when the full-press switch of the release button 8 is turned on to the start of exposure can be shortened without deteriorating the performance of image blur correction. Of course, when the shake correction optical system 2 is driven inward, the exposure starts immediately.

Also for the embodiment of FIGS. 13 and 14, FIG.
1, as described in FIG. 12, the predetermined constant “C”,
“D”, “E” and “h”, “g” may be automatically changed in association with the shutter time setting at the time of shooting. Of course, setting of values such as “h” and “g” is not limited to the example shown in the description of FIG. 13, and a coefficient empirically obtained from the above numerical values (for example, × 0.7 to ×
It may be a value multiplied by 1.4), or may be another value obtained in advance by experiments or the like. Further, it may be changed according to the setting of each shooting mode.
The same applies to "C", "D", and "E".

In FIG. 13, S335, S336, S
The judgment criteria of 337, S351, S352, S355 are
"C", "D", "E", "-E", "-"
Although "0" is sandwiched between "D" and "-C", the values are symmetrical, but the values are not limited thereto. In addition, S36
The same applies to the determination criteria “h”, “g”, “−g”, and “−h” of 1, S362, S366, and S367.

For the former, the judgment criteria are “C”, “D”, “E”, “F”, “G”, and “H” (the moving range of the shake correction optical system 2 is ± 1). When 1 ≧ C ≧
D ≧ E ≧ F ≧ G ≧ H ≧ −1). Also, for the latter, the judgment criteria are “h”, “g”,
It may be “f” or “e” (h ≧ g ≧ f ≧ e). This is effective when an asymmetrical camera shake occurs at the time of shooting due to the effect of the release button 8 being pressed by the photographer and the like, when an asymmetrical characteristic is given depending on the direction of the camera shake.

For example, when the camera is expected to sway in a downward direction due to the pressing operation of the release button 8, the shake correction optical system 2 is used to correct the image shake.
Are expected to be driven upwards more often. In such a case, | C | <| H |, | D | <| G |
For example, the determination criteria regarding the position may be biased downward. Moreover, you may adjust by the determination criterion regarding speed.

Although the image blur correction driving in the Y direction has been described above, it is apparent that the same application can be made in the X direction. In addition, "C"-"H" and "h"
With respect to the criteria such as "e", the Y direction and the X direction may be different from each other. Furthermore, multi-stage determination may be performed. Further, as described above, the values of the determination criteria such as “C” to “H” and “h” to “e” described above may be stored in advance in the storage portion of the camera CPU 5, for example. Good. Further, it may be a value calculated by the camera CPU 5 according to shooting conditions or the like, or a value calculated by multiplying a predetermined stored value by a coefficient.

15 and 16 are flow charts showing still another application example of the embodiment of the camera-shake preventing camera according to the present invention. In the example described in FIG. 13, in the case of “Wy> C” and “Wy <−C”, an example in which the start of exposure is not permitted is shown. In this embodiment, when the position of the blur correction optical system 2 is the outermost part of the movement range,
The exposure is not permitted to start in order to allow a large margin to avoid an excessive range due to an unexpected camera shake. Since the contents of each step are the same as those in FIG. 13, description thereof will be omitted. The embodiment shown in FIG. 13 and the embodiment shown in FIG. 15 may be switched by the photographer using the mode setting dial 9 of the camera. The setting of each photographing mode and the shutter speed condition at the time of photographing are matched. Then, it may be automatically switched.

FIG. 7 is a flow chart for explaining the operation of the third embodiment of the camera with the image blur prevention function according to the present invention, and FIG.
FIG. 8 is a diagram showing a correction optical system position sensor used in the third embodiment. It is another embodiment of the contents of S130 described in FIG. Correction optical system position sensor 14
In this example, y and 14x have a simple structure including the conductor pattern 14a and the brush 14b as shown in FIG. 8, and it is possible to determine only the drive position of the blur correction optical system 2 on which side of the center point CP. For simplicity, only the determination procedure in the Y direction will be described.

In FIG. 7, first, in step S3010, it is determined whether or not the shake correction optical system 2 is above the center point.
In the case of the correction optical system position sensor 14 shown in FIG.
When the shake correction optical system 2 is located above the center point, the brushes 14b-1 and 14b-2 are electrically connected, and otherwise, they are not electrically connected, so that the determination can be easily performed. In S3010, when the shake correction optical system 2 is above the center point, S
In step 3030, it is determined whether or not the drive control signal to the correction drive unit 3y is for downward drive. Since this signal is also a signal generated by the camera CPU 5, it can be easily determined. If it is determined in S3030 that the drive signal is directed downward, it means that the shake correction optical system 2 is being driven toward the center point.
The process ends in S130 and proceeds to S140. If not, the process returns to S3010 again.

Next, S3020, which is to be executed when it is determined to be NO in S3010, will be described. This is the case where the blur correction optical system 2 is located below the center point. In S3020, it is determined whether or not the drive control signal to the correction drive unit 3y is to drive upward. If it is determined in step S3020 that the drive signal is an upward drive signal, it means that the shake correction optical system 2 is being driven toward the center point, and thus step S130 is terminated and the process proceeds to step S140. If not, the process returns to S3010 again.

In each of the embodiments described above, the blur correction optical system 2 has been described as a type in which the image forming lens is shifted to correct the image blur, but the invention is not limited to this. For example, the blur correction optical system 2 may form a part of the photographing optical system, and a part of the optical system may be shift-driven to correct the image blur.

Further, a blur correction optical system using the already known variable apex angle prism 23 as shown in FIG. 9 may be used. In the case of the variable apex angle prism 23, the center points of the respective drive angles of the pitch correction drive surface and the yaw correction drive surface correspond to the center points described so far. Reference numeral 22 is a photographic optical system, and 24 is a variable apex angle prism drive angle sensor. Further, in addition to this, the image blur may be corrected by a reflecting mirror inserted in the middle of the photographing optical system,
Alternatively, the film 6 may be moved vertically and horizontally to correct the positional deviation of the image formed on the film.

[0083]

As described above, according to the present invention, after the release button is pressed, when the drive direction of the shake correction optical system is toward the center of the drive range, the shake correction unit is outside the determination position and When inward, when the shake correction unit is inside the determination position and the determination speed is low, when the shake correction unit is outside the determination position and not at a higher outward speed,
When it is not expected that the drive range of the shake correction unit will be exceeded,
Since exposure is started, there is a margin of at least half of the movement range in the direction that can be expected to be driven during exposure, it is possible to take a large vibration isolation drive stroke during exposure, and also release it unnecessarily. It is possible to obtain the effect that good image blur prevention shooting can be performed without increasing the time lag.

In consideration of the drive position and drive speed of the shake correction optical system, the exposure is started under the condition that the movement range is not expected to be exceeded, and the exposure start is prohibited under the condition that the movement range is expected to be exceeded. Since this is done, there is an effect that good image blur prevention shooting can be performed without increasing the time lag.

Furthermore, since the exposure operation is started immediately depending on the condition such as when the exposure time set in the camera is relatively short, there is an effect that an unnecessary release time lag can be eliminated.

[Brief description of drawings]

FIG. 1 is a side view schematically showing a first embodiment of an anti-shake camera according to the present invention.

FIG. 2 is a front view schematically showing a first embodiment of an anti-shake camera according to the present invention.

FIG. 3 is a flowchart illustrating an operating sequence of the camera of the first embodiment.

FIG. 4 is a diagram illustrating details of drive direction determination of each drive unit according to the first embodiment.

FIG. 5 is a diagram showing a relationship between a release button operation and an exposure start timing according to the first embodiment.

FIG. 6 is a flowchart showing a second embodiment of an anti-shake camera according to the present invention.

FIG. 7 is a flowchart showing a third embodiment of the anti-shake camera according to the present invention.

FIG. 8 is a diagram showing a correction optical system position sensor according to a third embodiment.

FIG. 9 is a diagram showing a blur correction optical system used in a fourth embodiment of the blur prevention camera according to the present invention.

FIG. 10 is a flowchart showing an application example of the first embodiment (FIG. 4).

FIG. 11 is a flowchart showing an application example of the second embodiment (FIG. 6).

FIG. 12 is a flowchart showing another application example of the second embodiment (FIG. 6).

FIG. 13 is a flowchart showing yet another application example (1) of the second embodiment (FIG. 6).

FIG. 14 is a flowchart showing yet another application example (2) of the second embodiment (FIG. 6).

FIG. 15 is a flowchart showing yet another application example (1) of the second embodiment (FIG. 6).

FIG. 16 is a flowchart showing still another application example (2) of the second embodiment (FIG. 6).

[Explanation of symbols]

 1 blur sensor 2 blur correction optical system 3 correction drive unit 4 correction optical system position sensor 5 camera CPU 8 release button

Claims (24)

[Claims] 1. A blur detection unit for detecting a blur amount of a camera, a blur correction unit for correcting and driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not blur, and the blur correction unit. A correction position detection unit that detects the position of a portion, and a shake control unit that calculates the correction amount of the shake correction unit from the output of the shake detection unit and drives the shake correction unit according to the output of the correction position detection unit. And an image blur prevention unit including an exposure control unit that permits the start of exposure when the drive direction of the shake correction unit is directed to the center of the drive range by the output of the correction position detection unit after the release button is pressed. camera. 2. A blur detection unit for detecting a blur amount of a camera, a blur correction unit for correcting and driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not blur, and the blur correction unit. A correction position detection unit that detects the position of a portion, and a shake control unit that calculates the correction amount of the shake correction unit from the output of the shake detection unit and drives the shake correction unit according to the output of the correction position detection unit. And an image blur prevention unit that prohibits the start of exposure when the drive direction of the shake correction unit is away from the center of its drive range due to the output of the correction position detection unit after the release button is pressed. camera. 3. The image blur prevention camera according to claim 1, wherein a plurality of blur correction units are provided, and the exposure control unit has a drive direction of each blur correction unit at a center of a drive range. An image blur prevention camera characterized by permitting the start of exposure when heading. 4. The image blur prevention camera according to claim 1, wherein a plurality of blur correction units are provided, and the exposure control unit is configured to drive a predetermined blur correction unit of the blur correction units. When heading to the center of that drive range,
An image blur prevention camera characterized by permitting the start of exposure. 5. The image blur prevention camera according to claim 4, wherein the predetermined blur correction unit has a drive direction in a vertical direction. 6. The image blur prevention camera according to claim 4, further comprising a posture sensor capable of determining a posture of the camera, wherein the predetermined shake correction unit has a driving direction in a gravitational direction. Image stabilization camera that does. 7. The image blur prevention camera according to claim 1, wherein a plurality of blur correction units are provided, and the exposure control unit is a blur correction unit in a direction in which a blur frequency is high among the blur correction units. An image blur prevention camera characterized in that the start of exposure is permitted when the driving direction of the unit is toward the center of the driving range. 8. The image blur prevention camera according to claim 1, wherein the exposure control unit, when the set exposure time is shorter than a predetermined time, performs exposure after a predetermined time after the release button is pressed. An image blur prevention camera characterized by permitting start. 9. The image stabilizing camera according to claim 8, wherein the predetermined time with respect to the set exposure time is a value between 1/4 and 16 times approximately 1 of a focal length of the photographing lens. An image blur prevention camera characterized in that 10. The image blur prevention camera according to claim 8, wherein the predetermined time with respect to the set exposure time is a value that is four times as large as about 1 of the focal length of the photographing lens. Image stabilization camera. 11. The image blur prevention camera according to claim 1, further comprising a mode setting section including at least an exposure mode and a film feeding mode, wherein the exposure control section, depending on a mode setting of the mode setting section, An image stabilizing camera, which permits exposure start after a predetermined time when the release button is pressed. 12. The image blur prevention camera according to claim 11, wherein when the automatic winding mode is set to the continuous mode by the mode setting unit, the exposure control unit presses a release button. An image blur prevention camera characterized by permitting immediate exposure start after exposure. 13. A blur detection unit for detecting a blur amount of a camera, a blur correction unit for correcting and driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not blur, and the blur correction unit. And a position determination unit that determines whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position in the drive range of the shake correction unit. Section, a shake control section that calculates a correction amount of the shake correction section from the output of the shake detection section, and drives the shake correction section according to the output of the corrected position detection section; A direction determination unit that determines whether the drive direction of the correction unit is outward or inward of the drive range of the shake correction unit, and the case where the position determination by the position determination unit is outside after the release button is pressed, The person An image blur prevention camera including: an exposure control unit that permits the start of exposure when the orientation determination unit determines that the orientation is inward. 14. A shake detection unit for detecting a shake amount of a camera, a shake correction unit for driving a part or all of a shooting optical system or a shooting film in a direction in which an image on a film surface does not shake, and a shake correction unit. And a position determination unit that determines whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position in the drive range of the shake correction unit. Section, a shake control section that calculates a correction amount of the shake correction section from the output of the shake detection section, and drives the shake correction section according to the output of the corrected position detection section; A direction determination unit that determines whether the drive direction of the correction unit is outward or inward of the drive range of the shake correction unit, and the case where the position determination by the position determination unit is outside after the release button is pressed, The person An image blur prevention camera including: an exposure control unit that prohibits the start of exposure when the orientation determination unit determines that the orientation is outward. 15. A blur detection unit for detecting a blur amount of a camera, a blur correction unit for correcting and driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not blur, and the blur correction unit. And a position determination unit that determines whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position in the drive range of the shake correction unit. Section, a shake control section that calculates a correction amount of the shake correction section from the output of the shake detection section, and drives the shake correction section according to the output of the corrected position detection section, and after the release button is pressed. An image blur prevention camera including: an exposure control unit that prohibits the start of exposure when the position determination unit determines that the position is inward. 16. A blur detection unit for detecting a blur amount of a camera, a blur correction unit for correcting and driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not blur, and the blur correction unit. And a position determination unit that determines whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position in the drive range of the shake correction unit. Section, a shake control section that calculates a correction amount of the shake correction section from the output of the shake detection section, and drives the shake correction section according to the output of the corrected position detection section, and after the release button is pressed. An image blur prevention camera including an exposure control unit that permits the start of exposure when the position determination unit determines that the position determination is inside. 17. A shake detection unit for detecting a shake amount of a camera, a shake correction unit for correcting and driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not shake, and the shake correction unit And a position determination unit that determines whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position in the drive range of the shake correction unit. Section, a shake control section that calculates a correction amount of the shake correction section from the output of the shake detection section, and drives the shake correction section according to the output of the corrected position detection section; A speed determination unit that determines whether the driving speed of the correction unit is greater than a predetermined determination value, and a case where the position determination unit determines that the position is inside after the release button is pressed. In the judgment section An image blur prevention camera including an exposure control unit that prohibits the start of exposure when the speed judgment by the camera is large. 18. A blur detection unit for detecting a blur amount of a camera, a blur correction unit for correcting and driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not blur, and the blur correction unit. And a position determination unit that determines whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position in the drive range of the shake correction unit. Section, a shake control section that calculates a correction amount of the shake correction section from the output of the shake detection section, and drives the shake correction section according to the output of the corrected position detection section; A speed determination unit that determines whether the driving speed of the correction unit is greater than a predetermined determination value, and a case where the position determination unit determines that the position is inside after the release button is pressed. In the judgment section An image blur prevention camera including an exposure control unit that permits the start of exposure when the speed determination by the camera is small. 19. The image blur prevention camera according to claim 17, wherein the determination value used by the speed determination unit is C, the determination value used by the position determination unit, and the drive range of the blur correction unit. Up to 1
Is a numerical value corresponding to a value obtained by dividing (1-C) by the exposure time at the time of shooting. 20. A blur detection unit for detecting a blur amount of a camera, a blur correction unit for correcting and driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not blur, and the blur correction unit. And a position determination unit that determines whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position in the drive range of the shake correction unit. Section, a shake control section that calculates a correction amount of the shake correction section from the output of the shake detection section, and drives the shake correction section according to the output of the corrected position detection section; A speed determination unit that compares the driving direction and speed of the correction unit with a predetermined determination value, and a case where the position determination unit determines that the position is outside after the release button is pressed. Speed An image blur prevention camera including: an exposure control unit that permits the start of exposure when the degree determination is not a faster outward speed than a predetermined outward speed. 21. A shake detection unit for detecting a shake amount of a camera, a shake correction unit for driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not shake, and the shake correction unit And a position determination unit that determines whether the position of the shake correction unit detected by the correction position detection unit is outside or inside the determination position in the drive range of the shake correction unit. Section, a shake control section that calculates a correction amount of the shake correction section from the output of the shake detection section, and drives the shake correction section according to the output of the corrected position detection section; A speed determination unit that compares the driving direction and speed of the correction unit with a predetermined determination value, and a case where the position determination unit determines that the position is outside after the release button is pressed. Speed An image blur prevention camera including: an exposure control unit that prohibits the start of exposure when the degree determination is a higher outward speed than a predetermined outward speed. 22. The image blur prevention camera according to claim 13, wherein the determination position of the position determination unit is ± 1/4 or less when the drive range of the shake correction unit is ± 1. An image blur prevention camera having a predetermined value of. 23. A blur detection unit for detecting a blur amount of a camera, a blur correction unit for driving to drive a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not blur, and the blur correction unit A correction position detection unit that detects the position of a portion, and a shake control unit that calculates the correction amount of the shake correction unit from the output of the shake detection unit and drives the shake correction unit according to the output of the correction position detection unit. A correction speed detection unit that detects the direction and speed of driving of the shake correction unit by the shake control unit; and position information detected by the correction position detection unit and speed information detected by the correction speed detection unit. hand,
A range-excess predicting unit that predicts an excess of the drive range of the shake correction unit in the shooting exposure time of the camera; , An image blur prevention camera including an exposure control unit that permits the start of exposure. 24. A shake detection unit for detecting a shake amount of a camera, a shake correction unit for driving a part or all of a photographing optical system or a photographing film in a direction in which an image on a film surface does not shake, and the shake correction unit A correction position detection unit that detects the position of a portion, and a shake control unit that calculates the correction amount of the shake correction unit from the output of the shake detection unit and drives the shake correction unit according to the output of the correction position detection unit. A correction speed detection unit that detects the direction and speed of driving of the shake correction unit by the shake control unit; and position information detected by the correction position detection unit and speed information detected by the correction speed detection unit. hand,
When the driving range of the shake correction unit is predicted to exceed the shooting exposure time of the camera, and when the driving range of the shake correction unit is predicted to exceed the shooting exposure time of the camera by the range excess prediction unit. ,
An image blur prevention camera including an exposure control unit that prohibits the start of exposure.