JPH06313918A - Shake preventing camera - Google Patents

Abstract

PURPOSE:To realize the prolongation of the life of a battery by appropriately controlling the use of a stroboscope. CONSTITUTION:A shake amount detection part 2 detects the amount of the shake of a camera; a shutter speed decision part 4 decides at least shutter speed in the case the stroboscope is not used based on the luminance of a subject; a shake amount prediction part 5 predicts the shake amount with respect to the shutter speed in the case the stroboscope is not used, which is decided by the decision part 4 based on the detection part 2; and a stroboscope light emission decision part 6 judges based on output from the prediction part 5 whether or not the stroboscope is allowed to emit light.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to an anti-shake camera that reduces the effect of image shake that occurs during shooting.

[0002]

2. Description of the Related Art Conventionally, a strobe has been used in order to prevent the influence of image blur that occurs when photographing with a camera. In a general camera, the guideline for low-luminance automatic light emission of the strobe is when the shutter speed is 1 / f (f is the focal length).

On the other hand, for example, in Japanese Patent Laid-Open No. 63-116132, a proper shutter time that allows image blur based on the image blur amount is newly set by changing the initial set shutter time to the initially set shutter time. A technique related to an image blur prevention camera that determines whether or not the aperture value due to time change can be compensated by the film latitude is disclosed. Further, Japanese Patent Application Laid-Open No. 59-107334 discloses a technique relating to a flash photography device that determines the shutter time based on the relationship between the hand-shake limit time and the flash synchronization time depending on the focal length. In addition, JP-A-63-1293
Japanese Patent No. 31 discloses a technique relating to an image pickup apparatus that controls a time lag up to a shutter timing according to an output of blur detection.

[0004]

However, in the above-mentioned camera, as the size of the camera itself becomes smaller, the F number increases, so that the brightness of the lens becomes darker, and the opportunity for the strobe to light increases, resulting in a natural appearance. The problem arises that you can't take a picture. Furthermore, the distance that the strobe light does not reach will be under. And the power supply battery will soon disappear.

On the other hand, the technique disclosed in Japanese Patent Laid-Open No. 63-116132 has a problem that it does not provide proper exposure because it employs the method expected for the latitude of the film. Further, the above-mentioned JP-A-59-1
In the technique disclosed in Japanese Patent Publication No. 07334, only the shutter speed at which blurring is difficult is determined, and the blurring cannot be reduced when the camera shake is large. Further, the technique disclosed in Japanese Patent Laid-Open No. 63-129331 does not mention the case of using a strobe.

The present invention has been made in view of the above problems, and an object thereof is to provide an anti-shake camera in which the use of a strobe is properly controlled and the battery life is extended.

[0007]

In order to achieve the above object, an anti-shake camera according to a first aspect of the present invention is provided with an anti-shake camera having a built-in strobe for detecting the amount of camera shake of the camera. Detection means, shutter speed determination means for determining at least the shutter speed when the strobe is not used based on the brightness of the subject, and strobe non-use time that is determined by the shutter speed determination means based on the blur amount detection means. It is characterized by comprising a blur amount predicting means for predicting a blur amount with respect to a shutter speed, and a strobe light emission determining means for determining whether or not the strobe is caused to emit light based on the output of the blur amount predicting means.

The blur prevention camera according to the second aspect is a blur prevention camera having a built-in strobe, in which a focal length detecting means for detecting a focal length of a photographing lens and a blur amount detecting means for detecting a camera shake amount of the camera. Means, shutter speed determination means for determining at least the shutter speed when the strobe is not used based on the brightness of the subject, and shutter speed determination means based on the focal length detection means and the blur amount detection means. It is characterized by comprising a blur amount predicting means for predicting a blur amount with respect to a shutter speed when the strobe is not used, and a strobe use determining means for determining whether or not the strobe is caused to emit light based on the blur amount predicting means. .

Further, in the blur prevention camera according to the third aspect, in the blur prevention camera having a built-in strobe, a shutter speed determination means for determining at least the shutter speed when the strobe is not used, based on the brightness of the subject, and the shutter. Strobe light emission presence / absence determining means for determining the light emission of the strobe when the shutter speed determined by the speed determining means is slower than the flash limiter which is the limit value, blur amount detecting means for detecting the camera shake amount of the camera, and the strobe light. A blur amount predicting unit that predicts a blur amount within an effective time period during which light is emitted based on the blur amount detecting unit; and a shutter timing control unit that drives a shutter when the predicted blur amount is smaller than a predetermined value. It is characterized by having.

Further, the blur prevention camera according to the fourth aspect further comprises a judging means for judging whether or not the distance to the subject is longer than a predetermined distance when it is decided that the strobe light is emitted. The timing control means drives the shutter at the shutter speed determined by the shutter speed determination means when the determination means determines that the distance is far.

[0011]

That is, in the blur prevention camera according to the first aspect of the present invention, the blur amount detecting means detects the camera shake amount of the camera, and the shutter speed determining means sets the shutter speed when the strobe is not used to the brightness of the subject. Based on the blur amount detecting means, the blur amount predicting means predicts the blur amount with respect to the shutter speed when the strobe is not used, which is determined by the shutter speed determining means, based on the blur amount detecting means. Based on the output of the quantity predicting means, it is determined whether or not the strobe is to emit light.

In the blur prevention camera according to the second aspect, the focal length detecting means detects the focal length of the photographing lens, and the blur amount detecting means detects the camera shake amount of the camera.
The shutter speed determination means determines at least the shutter speed when the strobe is not used based on the brightness of the subject, and the blur amount prediction means determines the shutter speed determination means based on the focal length detection means and the blur amount detection means. The amount of blurring with respect to the shutter speed when the strobe is not used is predicted, and the strobe use determining means determines whether or not the strobe is caused to emit light based on the blurring amount predicting means.

Further, in the blur prevention camera according to the third aspect, the shutter speed determining means determines at least the shutter speed when the strobe is not used based on the brightness of the object, and the strobe light emission determining means determines the shutter speed determining means. When the shutter speed determined by is slower than the flash limiter, which is the limit value, the flash emission is determined, and the blur amount detection means detects the camera shake amount of the camera,
The blur amount predicting means predicts the blur amount within the effective time for the strobe to emit light based on the blur amount detecting means, and the shutter timing control means drives the shutter when the predicted blur amount becomes smaller than a predetermined value. .

Further, in the blur prevention camera according to the fourth aspect, when the judging means decides to make the strobe emit light, it judges whether or not the distance to the subject is longer than a predetermined distance, and the shutter timing control means. Drives the shutter at the shutter speed determined by the shutter speed determination means when the determination means determines that the distance is far.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the configuration of a blur prevention camera according to the first embodiment of the present invention. As shown in the figure, in this embodiment, the focal length detecting unit 1 and the blur amount detecting unit 2 are connected to the blur amount predicting unit 5, and the photometric unit 3 is a shutter speed determining unit 4.
The blur amount predicting unit 5 is connected to the flash amount predicting unit 5 through the flash unit, and the blur amount predicting unit 5 is connected to the flash emission determining unit 6.

In such a structure, the photometric unit 3 converts the subject light incident through the photographic lens (not shown) into an electric signal, and the signal current is temperature-compensated and logarithmically compressed to make the subject brightness dependent on the temperature. The voltage signal is output to the shutter speed determination unit 4 as a voltage signal.

Then, the shutter speed determination unit 4 determines the shutter speed based on the subject brightness measured by the photometry unit 3. That is, the photometry value (BV) and the film sensitivity (S
The shutter speed (TV) is calculated from V). Further, the blur amount detection unit 2 outputs the camera blur amount to the blur amount prediction unit 5 as an acceleration signal by, for example, an acceleration sensor. And
The focal length detection unit 1 detects the focal length of the taking lens and outputs it to the blur amount prediction unit 5. The blur amount prediction unit 5 predicts the blur amount of the film surface while the shutter is open based on the camera blur amount detected by the blur amount detection unit 2 and the focal length detected by the focal length detection unit 1. . Then, the strobe light emission determination unit 6 determines whether or not a hand-shake photograph is likely to occur based on the blur amount, and determines strobe light emission when it is expected that a camera-shake photograph will be obtained.

Next, FIG. 2 is a diagram showing a configuration in which the first embodiment is further embodied. In the figure, a microcomputer 11 that controls the entire camera includes an AF circuit 12 that measures the distance to the subject and an AE circuit 1 that measures the luminance of the subject.
3. A blur sensor 14 that detects an amount corresponding to the amount of camera shake is connected. And this microcomputer 11
Through the interface 16 that converts the output to a signal of a level that can drive a motor or the like, to the lens unit 17 including the focus and zoom systems, the shutter unit 18, and the film feeding unit 19 that winds and rewinds the film. It is connected. Further, the microcomputer 11 is also connected to a focal length detection unit 15 for detecting the focal length of zoom, a strobe unit 20, a first release switch 1R, and a second release switch 2R. The focal length detection unit 1 shown in FIG.
Corresponds to the circuit 12, the photometric unit 3 corresponds to the AE circuit 13,
The blur amount detection unit 2 corresponds to the blur sensor 14. And
The blur amount prediction unit 5, the shutter speed determination unit 4, and the flash emission determination unit 6 all correspond to the microcomputer 11.

Next, FIG. 3 is a program diagram of a typical compact camera. The "flash limiter" shown in the figure is a low-brightness automatic light emission line indicating that a strobe is emitted when the brightness is lower than that in a normal program. Then, when the strobe is emitted, GNo is controlled by the effective light emission time DV in the lower right diagram. Further, when the flash is emitted, the aperture is set to an open value. In the figure, "T" indicates a program to be referred to when tele, and "W" indicates a program to be referred to when wide.

The release process according to the first embodiment will be described below with reference to FIG. When the first release switch 1R is turned on and the release process is executed, distance measurement and photometry are performed (steps S101, 10).
2) Subsequently, AF calculation is performed to calculate the distance to the subject and the lens drive amount (step S103). Further, the exposure calculation is performed, and the exposure value is calculated based on the program diagram shown in FIG. 3 for both the case where the strobe is emitted and the case where the strobe is not emitted (step S104).

When the second release switch 2R is turned on (steps S105 and S106), the lens is driven based on the lens driving amount calculated in step S103 to focus on the subject (step S107). Next, the amount of camera shake during shutter opening is predicted at shutter speed when the strobe is not emitted. This prediction method is as disclosed in Japanese Patent Application No. 3-218672 (step S108). When the amount of camera shake is small, the flag fFM is set to "0" as "no strobe required", and when the amount of camera shake is large, "strobe is required" and the flag fFM is set to "1" ( Steps S110, S111).

Then, in shutter driving, the flag f
When FM is “1”, the program control chart for strobe light emission is referred to, and when flag fFM is “0”, the program control chart for no strobe light emission is referred to (step S112). Then, the film is wound (step S113), and all the processes are finished (step S114).

As described above, in the blur prevention camera according to the first embodiment, the blur prediction is predicted by the strobe effective light emission time even when the shutter speed is the low luminance light emission time, so that the shutter timing is delayed. Can be minimized.

Next, an anti-shake camera according to a second embodiment of the present invention will be described. In the present embodiment, after driving the lens, the camera shake second and the flash limiter are compared, and if the camera shake second is faster than the flash limiter, the flag fFM is unconditionally set to "0" and the strobe light is emitted. The feature is that the shutter drive is performed without it.

Since the structure of this embodiment is the same as the structure of the first embodiment shown in FIG. 2, its explanation is omitted here. The release process according to the second embodiment will be described below with reference to FIG.

When the first release switch 1R is turned on and the release process is executed, distance measurement and photometry are performed (steps S201 and 202), and then AF calculation is performed to calculate the distance to the object and the lens drive amount (step S201, 202). Step S203). Further, the exposure calculation is performed, and the exposure value is calculated based on the program diagram shown in FIG. 3 for both the case where the strobe is emitted and the case where the strobe is not emitted (step S204).

When the second release switch 2R is turned on (steps S205 and S206), the lens is driven based on the lens driving amount calculated in step S203 to focus on the subject (step S207).

Subsequently, the camera shake second time and the camera shake limit value, the flash limiter, are compared (step S20).
8). If the camera shake second time is faster than the flash limiter, the flag fFM is unconditionally set to "0",
If the camera shake time is slower than the flash limiter,
Next, the amount of camera shake during shutter opening is predicted at shutter speed when the strobe is not emitted. This prediction method is as disclosed in Japanese Patent Application No. 3-218672 (step S209).

When the amount of camera shake is small, the flag fFM is set to "0" as "no flash required", and when the amount of camera shake is large, "strobe is required" and the flag fFM is set to "1". Set (steps S210 to S21
2). Subsequently, in shutter driving, if the flag fFM is "1", the program diagram of strobe emission is referred to, and if the flag fFM is "0", the program diagram without strobe emission is referred to. Control is performed (step S213). Then, the film is wound up (step S214), and all the processes are finished (step S214).
215).

As described above, in the camera shake prevention camera according to the second embodiment, after the lens is driven, the camera shake second and the flash limiter are compared, and when the camera shake second is faster than the flash limiter. Unconditionally set the flag fFM to "0" to perform shutter drive without strobe,
When the speed is lower than that of the flash limiter, the same processing as the sequence of the first embodiment is performed.

Next, an anti-shake camera according to the third embodiment of the present invention will be described. The present embodiment is characterized in that the flash emission is determined by the flash limiter, and then the simple camera shake reduction for opening the shutter is performed at a timing with less blur. Since the configuration of this embodiment is similar to that of the first embodiment shown in FIG. 2 above, the description thereof is omitted here.

The release process according to the third embodiment will be described below with reference to FIG. When the first release switch 1R is turned on and the release process is executed, distance measurement and photometry are performed (steps S301 and 302), and then AF calculation is performed to calculate the distance to the subject and the lens drive amount (step S303). Further, the exposure calculation is performed, and the exposure value is calculated based on the program diagram shown in FIG. 3 for both the case where the strobe is emitted and the case where the strobe is not emitted (step S304).

When the second release switch 2R is turned on (steps S305 and S306), the lens is driven based on the lens driving amount calculated in step S103 to focus on the subject (step S307). Next, the amount of camera shake during shutter opening is predicted at the shutter speed when the flash is not emitted. This prediction method is as disclosed in Japanese Patent Application No. 3-218672 (step S308). And
When the amount of camera shake is small, the flag fFM is set to "0" as "no strobe required", and when the amount of camera shake is large, the flag fFM is set to "1" as "strobe required" (step S310). , S311).

Subsequently, a subroutine "shutter timing process" which will be described later is executed (step S312). In the shutter drive, shutter control is performed by referring to the program diagram of strobe emission when the flag fFM is "1" and by referring to the program diagram without strobe emission when the flag fFM is "0". (Step S31
3). Then, the film is wound (step S
314), and ends all processing (step S31).
5).

Next, referring to the flowchart of FIG.
The sequence of the above-mentioned subroutine "shutter timing processing" will be described. The shutter timing process has already been disclosed in Japanese Patent Application No. 3-218672.

In this routine, the strobe is fired, and when the strobe effective light emission time DV is 5 ms or more, the strobe effective light emission time is substituted into the register B (steps S401, 402, 403). Then, when the strobe is not emitted, or when the strobe is emitted but the effective strobe emission time DV is not 5 ms or more, the shutter open time is substituted in the register B (steps S401, 402,
404).

Then, the blur amount during the time of the register B is predicted while reading the blur amount, and when it becomes equal to or less than the predetermined amount, the process is terminated and the process returns to the main routine (steps S405 to S408). Here, the effective light emission time of the strobe is determined based on the graph shown in FIG. There is no problem if the effective light emission time is limited to about 5 ms.

As described above, in the anti-shake camera according to the third embodiment, the flash calculation is used when the speed becomes slower than the flash limiter in the exposure calculation, and the breath calculation is performed after the lens driving by the breath calculation. Shutter timing processing is executed, and shutter timing processing for selecting a shutter timing with less blur is executed according to the result.

Next, an anti-shake camera according to the fourth embodiment of the present invention will be described. FIG. 9 is a diagram showing the configuration of the blur prevention camera according to the fourth embodiment. As shown in the figure, in the present embodiment, the distance measuring unit 7 and the stroboscopic light emission determining unit 6 are connected to the breath-resh calculating unit 8, and the breath-resh calculating unit 8 and the shake amount detecting unit 2 serve as the shake amount predicting unit 5. In this configuration, the blur amount prediction unit 5 is connected to the shutter timing determination unit 9.

In such a configuration, the strobe light emission determination unit 6 determines the strobe light emission when the shutter speed is slower than the limit value of the flash limiter, and the breath threshold calculation unit 8 determines when the strobe light emission is to be performed. It is determined whether the distance to the subject calculated by the distance measuring unit 7 is longer than a predetermined distance. Then, the blur amount detection unit 2
Detects the camera shake amount of the camera, the shake amount predicting unit 5 predicts the shake amount within the effective time of strobe light emission based on the shake amount detecting unit 2, and the shutter timing determining unit 9 causes the breath threshold. When the calculation unit 8 determines "far", the shutter is driven at the shutter speed determined by the shutter speed determination unit.

The release process according to the fourth embodiment will be described below with reference to FIG. When the first release switch 1R is turned on and the release process is executed, distance measurement and photometry are performed (steps S501, 50).
2) Then, AF calculation is performed to calculate the distance to the subject and the lens drive amount (step S503). Further, the exposure calculation is performed, and the exposure value is calculated based on the program diagram shown in FIG. 3 for both the case where the strobe emits light and the case where the strobe does not emit light (step S504).

When the second release switch 2R is turned on (steps S505 and S506), the lens is driven based on the lens driving amount calculated in step S503 to focus on the subject (step S507). Subsequently, a subroutine "Breathless calculation" which will be described later is executed (step S508), and further, the above-mentioned subroutine "shutter timing process" is executed (step S509). Then, the shutter is driven (step S510), the film is wound (step S511), and all the processes are finished (step S512).

Next, the sequence of the above-mentioned subroutine "breathless operation" will be described with reference to the flowchart of FIG. In this routine, when the strobe emits light and the distance is short, that is, when the strobe light is effective, the effective strobe light emission time is determined based on the graph shown in FIG. 8 (steps S601 to S603). There is no problem if the effective light emission time is limited to about 5 ms. When the effective light emission time of the strobe is determined in this way, the process exits this routine and returns to the main routine (step S604).

As described above, according to the fourth embodiment, the strobe light is emitted on the basis of the graph shown in FIG. 8 even if the distance is short and the strobe light is effective. Can be determined.

As described above in detail, in the camera of the present invention, the blur prediction is predicted by the strobe effective light emission time even when the shutter speed is the low luminance light emission time, so the delay of the shutter timing should be minimized. You can Furthermore, F
Even with a lens with a dark number, the chance of emitting light at a shutter speed of 1 / f or more is reduced, and natural pictures are often taken. Further, the life of the battery can be extended by reducing the frequency of use of the strobe. Of course, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made.

[0046]

According to the present invention, it is possible to provide an anti-shake camera in which the use of a strobe is properly controlled and the battery life is extended.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a blur prevention camera according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a detailed configuration of a blur prevention camera according to the first embodiment.

FIG. 3 is a program diagram of a typical compact camera.

FIG. 4 is a flowchart for explaining a release process according to the first embodiment.

FIG. 5 is a flowchart for explaining a release process according to a second embodiment.

FIG. 6 is a flowchart for explaining a release process according to a third embodiment.

FIG. 7 is a flowchart showing a sequence of a subroutine “shutter timing processing”.

FIG. 8 is a diagram showing a relationship between effective light emission time of a strobe and GNo.

FIG. 9 is a diagram showing a configuration of a blur prevention camera according to a fourth embodiment.

FIG. 10 is a flowchart illustrating a release process according to a fourth embodiment.

FIG. 11 is a flowchart showing a sequence of a subroutine “breathless calculation”.

[Explanation of symbols]

1 ... focal length detection unit, 2 ... blur amount detection unit, 3 ... photometry unit,
4 ... Shutter speed determination unit, 5 ... Blurring amount prediction unit, 6 ... Strobe light emission determination unit, 7 ... Distance measuring unit, 8 ... Breathless calculation unit, 9 ... Shutter timing determination unit.

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[Procedure amendment]

[Submission date] July 13, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

As described above, in the anti-shake camera according to the first embodiment, whether or not the strobe is fired is determined based on the output of the predicting means for the amount of blur, so that a photograph free from blur is always displayed. You can shoot.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

Next, an anti-shake camera according to a second embodiment of the present invention will be described. In this embodiment, after the lens is driven, the shutter speed and the flash limiter are compared.
When the shutter speed is faster than the flash limiter, the flag fFM is unconditionally set to "0" to drive the shutter without strobe.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction content]

Subsequently, the shutter speed is compared with the flash limiter which is the camera shake limit value (step S20).
8). When the shutter speed is faster than the flash limiter, the flag fFM is unconditionally set to "0", and when the shutter speed is slower than the flash limiter, the shutter for the case where the strobe is not emitted subsequently. Predict the amount of camera shake while the shutter is open in seconds. This prediction method is as disclosed in Japanese Patent Application No. 3-218672 (step S209).

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0030

[Correction method] Change

[Correction content]

As described above, in the anti-shake camera according to the second embodiment, after the lens is driven, the shutter speed is compared with the flash limiter, and when the shutter speed is faster than the flash limiter, Unconditionally flag fFM
Is set to "0" to drive the shutter without strobe, and when the speed is lower than that of the flash limiter, the same processing as the sequence of the first embodiment is performed. In this case, even if the shutter speed is slower than the flash limiter, if the amount of camera shake is small, strobe light will not be emitted, and the battery can be used effectively.

[Procedure Amendment 5]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshinori Matsuzawa 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Hideto Kitazawa 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Co., Ltd. (72) Inventor Toshiro Kikuchi 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd.

Claims (4)

[Claims] 1. An anti-shake camera with a built-in strobe, a shake amount detecting means for detecting the amount of camera shake of the camera, and a shutter speed determination for determining at least a shutter speed when the strobe is not used based on the brightness of an object. Means, a blur amount predicting means for predicting a blur amount with respect to a shutter speed when the flash is not used, which is determined by the shutter speed determining means based on the blur amount detecting means, and a strobe based on an output of the blur amount predicting means. An anti-shake camera, comprising: a stroboscopic light emission determining unit that determines whether or not to emit light. 2. An anti-shake camera having a built-in strobe, a focal length detecting means for detecting a focal length of a photographing lens, a blur amount detecting means for detecting a camera shake amount of the camera, and a shutter when the strobe is not used. A shutter speed determining means for determining at least the speed based on the brightness of the object, and a blur amount with respect to the shutter speed when the strobe is not used, which is determined by the shutter speed determining means based on the focal length detecting means and the blur amount detecting means. An anti-shake camera, comprising: a blur amount predicting unit that predicts a blurring amount; and a strobe use determining unit that determines whether or not a strobe emits light based on the blur amount predicting unit. 3. An anti-shake camera having a built-in strobe, wherein a shutter speed decision means for deciding at least the shutter speed when the strobe is not used based on the brightness of an object, and a shutter speed decided by the shutter speed decision means. The flash emission presence / absence determining means for determining the flash firing when the flash is slower than the limit value, the blur amount detecting means for detecting the camera shake amount of the camera, and the blur amount within the effective time for which the flash fires are set. An anti-shake camera comprising: a blur amount predicting unit that predicts based on the blur amount detecting unit; and a shutter timing control unit that drives a shutter when the predicted blur amount becomes smaller than a predetermined value. . 4. The shutter timing control means further comprises a judgment means for judging whether or not the distance to the subject is longer than a predetermined distance when it is decided to make the strobe emit light. 4. The shutter is driven at a shutter speed determined by the shutter speed determining means when the determination is made.
The anti-shake camera described in.