JPH0618973A - Camera-shake display device - Google Patents

Abstract

PURPOSE:To display camera-shake in a display form that a photographer can easily recognize the degree of the camera-shake, without requiring a novel display part, in a camera-shake display device, detecting the the camera-shake and informing a quantity of the camera-shake to the photographer. CONSTITUTION:The camera-shake display device is provided with a camera- shake detecting means 12 detecting the quantity of the camera-shake and generating a camera-shake quantity signal, based on the output of the camera-shake detecting sensor, information signal generating means 13-18 and 24 generating the signal of the photographing information value of the camera, a display means 19 having a measure 30 displaying the photographing information value, a measure 32 displaying the quantity of camera-shake, and a level display element 31 composed of plural segments, and a display control means 20 selecting either of the camera-shake quantity signal and a photographing signal and generating a display signal. A constitution is adopted so that either of the photographing information value and the quantity of the camera-shake is displayed by using the measure corresponding to the selected signal, and the level display element.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera shake display device for detecting a camera shake and notifying a photographer of the amount of camera shake.

[0002]

2. Description of the Related Art Conventionally, various warnings have been displayed on cameras. One of the most frequently issued warnings is camera shake warning display. In the conventional camera shake warning display, the display at the shutter speed blinks, a warning is issued by sound, and a pattern indicating camera shake is prepared as a segment for liquid crystal display, and when the warning is issued, it is displayed outside the camera or in the viewfinder. LCD screen (LC
D) It is displayed by blinking on the screen (for example, see Japanese Patent Publication No. 62-37771).

The principle of camera shake detection of a camera is shown in FIG. 12 in which the distance from the lens L to the subject A is a, and the lens L is
From the image plane B to the focal length of the lens L f
Then, the moving speed v1 of the image on the image plane B when the optical axis I is tilted to I ′ at the angular speed ω can be expressed as v1 = {af / (af)} × ω. However, there is a relationship of (1 / a) + (1 / b) = (1 / f) .... Here, when the shutter speed is "t", the shake amount d1 becomes d1 = v1t ..., and this shake amount d1 is, for example, the permissible circle of confusion diameter δ (δ
If it is larger than 1 / 30mm), it will "sway".

If the camera is equipped with an anti-shake device, and the image on the image plane B can be moved at a speed v2 by this anti-shake device, then the shake amount d at this time is d = (v1-v2).・ T ... If the shake amount d is larger than the permissible circle of confusion diameter δ, the shake occurs.

[0005]

By the way, with the above-mentioned blinking display at the shutter speed and the warning by sound, it may not be possible for a beginner to recognize what the warning means. In addition, the warning that blinks a special symbol on the LCD is easier to recognize than other warnings, but if the symbol is complicated and small, it cannot be identified, and if it is large, the space for other displays is reduced. There is an inconvenience of causing it. Further, although it can be understood that there is camera shake in each of these warning displays, the photographer cannot recognize how much the camera shake is. Further, although it is known that the camera shakes, there is an inconvenience such as not knowing how to deal with it.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a camera shake display device for displaying a camera shake in a display form which does not require a new display section and which allows the photographer to easily recognize the degree of shake.

[0007]

A camera shake display device according to the present invention includes a shake detection means (12) for detecting a shake amount of a camera based on an output of a shake detection sensor and generating a shake amount signal, and a camera. Information signal generating means (13 to 18, 24) for generating a signal of the photographing information value, and a display means (19) having a scale indicating the photographing information value, a scale indicating the shake amount, and a level display element including a plurality of segments. )When,
Display control means (20) for generating a display signal by selecting either the shake amount signal or the photographing signal is provided, and the photographing information value or the level is displayed by using a scale and a level display element corresponding to the selected signal. It is configured to display either one of the shake amounts.

In this case, the display control means is configured to generate the display signal by selecting the shake amount signal according to the half-pressed state of the release button. Further, in this case, the display of the shake amount on the display means is configured such that the display level changes according to the magnitude of the shake amount to be displayed.

Further, the camera shake display device according to the present invention includes a shake detection means (12) for detecting the shake amount of the camera based on the output of the shake detection sensor, and a display means (19) for indicating the photographing information value of the camera. And a conversion means (10) for converting the shake amount into a corresponding information value which is a corresponding shooting information value in order to set the shake amount to a predetermined amount in the shooting result,
The correspondence information value is displayed on the display means.

In this case, the corresponding photographing information value is displayed, and at the same time, the currently set photographing information value is also displayed on the display means. Further, in this case, the photographing information value is configured to be the photographing shutter speed. further,
In this case, the display of the shake amount on the display means is started by the half-pressed state of the release button. Further, in this case, the display of the shake amount on the display means is configured such that the display level changes according to the magnitude of the shake amount to be displayed.

[0011]

In the structure of the present invention, the amount of camera shake of the camera is displayed by stopping the display of the photographing information value displayed on the display means for a certain period while pressing the release button halfway and displaying the stopped photographing information value. Display means. The shooting information value at which the display is stopped includes the shutter speed, the focal length, the exposure level, or the exposure correction value.

The display means for displaying the photographing information value, for example, shutter speed, comprises a shutter scale, a display element composed of a plurality of segments provided corresponding to each shutter scale, and a shake scale. When the shutter speed is displayed on this display means, the shutter scale and the segment in the display element corresponding to the set shutter speed are turned on, and when the shake amount is displayed, the shake scale and the segment at one end of the display element. The shake amount is displayed as an analog level from the starting point. When the shake amount exceeds the shake scale, it means that the shake is large.

Further, as another display means, there is a display means in which the segments of the display element are at least two rows and the photographing information value and the shake amount are simultaneously displayed. When only the photographing information value is displayed by this display means, the segments in all columns are similarly used to display, and when the photographing information value and the shake amount are simultaneously displayed, the photographing information value is displayed in the segment in the predetermined column. , The level of the shake is displayed as an analog level on the other predetermined segment. In particular, when the shooting information value is the shutter speed, since the shutter speed and the shake have a close relationship, the relationship of the shake amount with respect to the set shutter time can be displayed in an easy-to-understand manner.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the present invention, in which a sequence control unit 10 having a computer configuration controls the entire camera. The sequence control unit 10 includes a release switch unit 11 having a half-press switch S1 and a full-press switch S2 which are sequentially turned on by the photographer pressing the release button.
A shake detection unit 12 that detects shake by detecting the tilt of the camera with an angular velocity sensor, a focal length detection unit 13 that detects the focal length of the taking lens with an encoder, a photometric unit 14 that measures the brightness of the subject, and a film to be used. ISO reading unit 15 for reading ISO data indicating the sensitivity of the exposure, exposure mode setting unit 16 for setting various exposure modes such as shutter priority or aperture priority, shutter time setting unit 17 for setting shutter time with a shutter dial, aperture ring The aperture value setting unit 18 for setting the aperture value, the LCD control unit 20 for controlling the display of the LCD 19 outside the camera or in the viewfinder, and the shutter drive unit 21 and the aperture drive unit 22 based on commands from the sequence control unit 10. The exposure control unit 23 and the shooting distance detection unit 24 for controlling are connected to each other, and the shooting distance detection unit 24 If the camera autofocus camera that detects the distance to the object output of the distance measuring device,
In the case of a manual focus camera, the amount of lens extension is detected.

Next, the camera shake display operation in this configuration will be described with reference to the flow chart shown in FIG. This camera shake display operation starts when the main switch of the camera is turned on, and various information such as focal length, shooting distance, shutter speed, manual exposure value, and exposure correction value is read (step S11), and the read various information is displayed on the LCD 19 Is displayed as shooting information on the screen (step S1)
2).

Next, the on / off state of the half-press switch S1 and the full-press switch S2 of the release switch section 11 is judged (steps S13, 14), and when only the half-press switch S1 is turned on, the shake detection section 12 is detected. The shake detection operation is started (step S15), and when both switches S1 and S2 are turned on, the process immediately shifts to the EXP processing (step S16) described later.

When the shake detection by the shake detection unit 12 is started (step S15), a part of the photographing information displayed on the LCD 19, for example, the shutter time display is stopped (step S17), and the shutter time is changed. The shake amount is displayed using the display element to be displayed (step S18).

The display element for displaying the shutter speed is shown in FIG.
As shown in (a), a shutter scale 30 representing a shutter time of 1/1 sec to 1/8000 sec, a rectangular segment group 31 provided corresponding to each shutter scale, and a shutter scale 1/125 sec, and It is composed of a swing scale 32 provided for 1/250 seconds.

When the shutter speed is displayed on this display element, as shown in FIG.
When the shutter speed is set, for example, when 1/125 second is set, the corresponding segment in the segment group 31 is turned on and the shake scale 32 is turned off. When displaying runout, as shown in Fig. 3 (c), the runout status is displayed as an analog level from the bottom segment of the rectangular segment group 31, and when the runout scale 32 is exceeded, the runout is large. It means that. At this time, shutter scale 3
0 is turned off.

As described above, the shake state is determined from the angular velocity of the camera, the focal length, the photographing distance and the shutter speed. In the case of a camera having a shake prevention device that prevents shake by shifting the lens, the range that can be prevented by the ability of the shake prevention device is displayed in consideration of the range.

When the shake display (step S18) is started in this way, the timer is started (step S1).
9) It is determined whether or not the full-press switch S2 is turned on (step S20). While the full-press switch S2 is not turned on, until the timer times out (step S
21) When the shake display is continued and the full-press switch S2 is turned on (step S20), the process immediately shifts to the EXP processing (step S16) described later.

When the timer times out (step S21), the shake display on the LCD 19 is stopped (step S22), and it is determined again whether or not the full-press switch S2 is turned on (step S23). Fully pressed switch S
If 2 is not turned on, the process returns to step S12, and the LCD 19 again displays various shooting information including the shutter speed. If the switch S2 is turned on, the EXP process is executed, the aperture mechanism is stopped down to the set aperture value, the mirror is raised, the shutter is opened to give the proper exposure to the film, the shutter is closed, the aperture is opened and the mirror is opened. Down is performed (step S16). This series of camera shake display operations is repeated until the main switch of the camera is turned off.

FIG. 4 is an embodiment showing another display mode of the shake display. In this embodiment, the shake amount is displayed by using the display of the focal length in the shooting information displayed on the LCD 19. The display element for displaying the focal length comprises a focal length scale 40, a group of five bar-shaped segments 41, and a swing scale 42, as shown in FIG.

When the focal length is displayed by this display element, as shown in FIG. 4B, the focal length scale 40 and the segment group 41 are used, and the shake scale 42 is turned off.
When displaying shake, as shown in Fig. 4 (c), the shake condition is displayed as an analog level with five bar-shaped segment groups 41 until the "OK" display on the shake scale 42 is reached. Although the shake is small and there is no problem, it indicates that the shake is greater as the display goes beyond the “OK” display to the “NG” display side.

FIG. 5 is an embodiment showing still another display mode of the shake display. In this embodiment, the shake amount is displayed by using the display of the exposure level at the time of manual exposure among the shooting information displayed on the LCD 19. The display element for displaying the exposure level is, as shown in FIG.
0 and a rectangular segment group 51 provided corresponding to each exposure level scale and a swing scale 52.

When the exposure level at the manual exposure is displayed on this display element, the exposure level scale 50 and the segment group 51 are used as shown in FIG. Display the amount of underexposure or overexposure on the left and right. At this time, the swing scale 52 is turned off. When displaying runout, as shown in Fig. 5 (c), the level of runout is displayed as an analog level from the right end using the rectangular segment group 51, and the runout is small at the level to the right of the center segment. Since there is no problem, "O
It is set as the K ”area, and when it reaches the left beyond the central segment, it is greatly shaken and is set as the“ NG ”area.

FIG. 6 is an embodiment showing still another display mode of the shake display. In this embodiment, the shake amount is displayed by using the display of the exposure correction value in the shooting information displayed on the LCD 19, and the display element for displaying the exposure correction value is as shown in FIG. 6 (a). Correction level scale 60 and square segment group 6 provided corresponding to each correction level scale
1 and a swing scale 62.

When the exposure correction value is displayed on this display element, as shown in FIG. 6 (b), a correction level scale 60 and a segment group 61 are used, and right and left are set with reference to the proper exposure "0". Displays the amount of increase / decrease in exposure compensation. At this time, the swing scale 62 is turned off. To display the shake, see Fig. 6.
As shown in (c), using the rectangular segment group 61, the shake state is displayed in an analog level from the right end as a starting point,
At the level to the right of the central segment, the shake is small and there is no problem, so it is set to the “OK” region, and when it reaches the left beyond the center segment, the shake is large and set to the “NG” region.

Next, another embodiment of the camera shake display device according to the present invention will be described. The present embodiment has the same configuration as that of FIG. 1 described above, and only the processing procedure of the shake display operation by the sequence control unit 10 is different. Therefore, the shake display operation of this embodiment will be described with reference to the flowchart shown in FIG. 7. .

The camera shake display operation according to this embodiment is started by turning on the main switch of the camera, and various information such as the focal length, the photographing distance, the shutter speed, the manual exposure value and the exposure correction value are read (step S31). The read various information is displayed on the LCD 19 as photographing information (step S32).

Then, the on / off state of the half-press switch S1 and the full-press switch S2 of the release switch section 11 is judged (steps S33, 34), and when only the half-press switch S1 is turned on, the shake detection section 12 is detected. Then, the shake detection operation is started (step S35). When both the switches S1 and S2 are turned on by pressing the release button, the EX
The P process (step S36) is executed.

When shake detection by the shake detecting unit 12 is started (step S35), a part of the photographing information displayed on the LCD 19, for example, the shutter time display is stopped (step S37), and the shutter time is changed. The shake amount is displayed using the display element to be displayed (step S38).

As shown in FIG. 8 (a), the display element at the shutter speed in this embodiment is 1/1 second to 1/8000.
Shutter scale 30 indicating the shutter time of second and square segment group 31 of two rows provided corresponding to each shutter scale
It consists of a and 31b. When displaying the shutter speed with this display element, as shown in FIG. 8B, the shutter scale 30 and the set shutter speed, for example, 1
Square segment group 3 when / 125 seconds is set
Illuminate the corresponding segment in 1a and 31b.

In case of displaying the shake amount, FIG. 8 (c) to (e)
As shown in, the shutter scale 30 and the set shutter speed (1/125
The segment corresponding to the second) is turned on, and at the same time, the state of the shake is displayed in an analog level using the segment at the lower end as a starting point using the rectangular segment group 31b. This display indicates whether the shake is large or small with respect to the set shutter speed.

For example, as shown in FIG. 8 (d), when the shake display by the segment group 31b exceeds the display position at the shutter time by the segment group 31a, the shake is displayed with respect to the set shutter time. It means that it is necessary to increase the shutter speed to 1/500 seconds. In addition, as shown in FIG. 8 (e), the segment group 31
When the shake display by b is lower than the display position by the segment 31a at the shutter time, there is a sufficient margin for the shake amount with respect to the set shutter time, and even if the shutter time is delayed to 1/30 second. It means that you cannot shake.

As described above, in this embodiment, the close relationship between the shutter speed and the shake expressed by the above equations and is used to determine whether the shake is large or small with respect to the set shutter speed. Since it is shown, the photographer can easily understand the relationship between the shake amount and the shutter speed, and can easily select the shutter speed.

When the shake display (step S38) is started in this way, the on / off states of the half-press switch S1 and the full-press switch S2 are determined again (step S39,
40), if the halfway press switch S1 is off, the shake display is stopped and the process returns to step S32 (step S32).
41), the LCD 19 again displays various shooting information including the shutter speed. If only the half-push switch S1 is turned on, the processing of steps S38 to S4O is repeated and the shake display is continued, and if the full-push switch S2 is turned on (step S40), the EXP processing is executed (step S36). , The aperture mechanism is stopped down to the set aperture value, the mirror is raised, the shutter is opened to give a proper exposure to the film, the shutter is closed, the aperture is opened and the mirror is lowered. This series of camera shake operations is repeated until the main switch of the camera is turned off.

FIG. 9 is an embodiment showing another display mode of the shake display. In this embodiment, the amount of shake is displayed by using the display of the focal length in the photographing information displayed on the LCD 19, and the display element for displaying the focal length is the focal length as shown in FIG. 9 (a). It comprises a scale 40, five bar-shaped segment groups 41a and 41b each having two rows, and a swing scale 42.

When the focal length is displayed by this display element, as shown in FIG. 9 (b), the bar-shaped segment groups 41a and 41b in two rows are used for display. When displaying shake, as shown in FIG. 9 (c), the segment group 41
The focal length is displayed by "a", and at the same time, the shake state is displayed as an analog level by the segment group 41b. The shake is small until the shake display reaches the “OK” display of the shake scale 42, but there is no problem, but the shake amount increases as the display goes beyond the “OK” display to the “NG” display side.

FIG. 10 is an embodiment showing another display mode of the shake display. In this embodiment, the shake amount is displayed by using the display of the exposure level at the time of manual exposure among the shooting information displayed on the LCD 19. As shown in FIG. 10A, the display element for displaying the exposure level has an exposure level scale 5
0 and two groups of square segment groups 51a and 51b provided corresponding to each exposure level scale.

When the exposure level at the manual exposure is displayed on this display element, as shown in FIG. 10B, the exposure level scale 50 and the exposure level at that time are set to the corresponding segments in the segment groups 51a and 51b. Lights up and displays the underexposure or overexposure on the left and right with reference to the proper exposure “0”.

To display the shake amount, as shown in FIG. 10C, the exposure level scale 50 and the segment corresponding to the exposure level at that time in the square segment group 51a are turned on, and at the same time, the square segment group 51b. The level of shake is displayed in analog form using the right end as a starting point. This display indicates whether the shake is large or small according to the exposure level.

For example, as shown in FIG. 10C, when the shake display by the segment group 51b is on the left side of the display position of the exposure level by the segment group 51a, the exposure determined by the relationship between the shutter speed and the aperture at that time. This indicates that the shutter speed is faster than the level until the shutter speed is large and the exposure is one step underexposure. At this time, if you want to set the exposure level to an appropriate level, you can open the diaphragm accordingly.

FIG. 11 is an embodiment showing another display mode of the shake display. In this embodiment, the shake amount is displayed by using the display of the exposure correction value in the shooting information displayed on the LCD 19. The display element for displaying the exposure correction value is shown in FIG.
As shown in FIG. 3, the correction level scale 60 and two groups of square segment groups 61a and 61b corresponding to each correction level scale and provided corresponding to each correction level scale are provided.

When the exposure correction value is displayed on this display element, as shown in FIG.
And the correction level at that time, the segment groups 61a and 6
Lights in the corresponding segment in 1b, and the proper exposure is "0".
Display the underexposure amount or overexposure amount on the left and right with reference to.

When displaying the shake amount, as shown in FIG. 11C, the correction level scale 60 and the segment corresponding to the correction level at that time in the square segment group 61a are turned on, and at the same time, the square segment group 61b is displayed. The level of shake is displayed in analog form using the right end as a starting point. This display indicates whether the shake is large or small according to the exposure level.

For example, as shown in FIG. 11C, when the shake display by the segment group 61b is on the left side of the display position of the correction level by the segment group 61a, the shake is large and the correction value becomes "0". Shows that it is necessary to increase the shutter speed. At this time, if the correction level is desired to be over by one step, the diaphragm may be opened accordingly.

[0048]

According to the present invention, since the camera shake display is performed by using the display element for displaying the photographing information of the camera, the shake amount of the camera is displayed without requiring a special display section. can do. Then, by displaying the set photographing information, for example, the shutter time and the shake amount at the same time, the relationship between the shutter time and the shake amount can be easily understood, and the shutter time can be easily selected.

Further, since the camera shake display of the display element is displayed as an analog level display, the degree of shake can be easily recognized. By pressing the release button halfway to display the camera shake, you can check the shake condition or the operation status of the shake prevention device in advance.In particular, the shake display is displayed on the external display of the camera. This is extremely effective for a lens shutter camera in which the amount of camera shake cannot be confirmed in the viewfinder.

[Brief description of drawings]

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

FIG. 2 is a flowchart illustrating a camera shake display operation of the camera according to the present invention.

FIG. 3 is a diagram showing an example of a display mode in the processing of FIG.

FIG. 4 is a diagram showing another embodiment of the display mode in the processing of FIG.

FIG. 5 is a diagram showing another embodiment of the display mode in the processing of FIG.

FIG. 6 is a diagram showing another embodiment of the display mode in the processing of FIG.

FIG. 7 is a flowchart illustrating another embodiment of the camera shake display operation according to the present invention.

FIG. 8 is a diagram showing an example of a display mode in the processing of FIG.

FIG. 9 is a diagram showing another embodiment of the display mode in the processing of FIG.

FIG. 10 is a diagram showing another embodiment of the display mode in the processing of FIG.

FIG. 11 is a diagram showing another embodiment of the display mode in the processing of FIG.

FIG. 12 is a diagram for explaining the principle of camera shake detection.

[Explanation of symbols]

 10 sequence control unit 11 release switch unit 12 shake detection unit 13 focal length detection unit 14 photometry unit 15 ISO reading unit 16 exposure mode setting unit 17 shutter speed setting unit 18 aperture value setting unit 19 liquid crystal display unit (LCD) 20 LCD control 21 shutter drive 22 aperture drive 23 exposure controller 24 shooting distance detector 30 shooting information value scale 31, 31a, 31b level display element 32 shake scale S1 half-press switch S2 full-press switch

Claims (8)

[Claims] 1. A shake detection unit that detects a shake amount of a camera based on an output of a shake detection sensor to generate a shake amount signal, an information signal generation unit that generates a signal of a photographing information value of the camera, A display unit having a scale indicating a photographing information value, a scale indicating the shake amount, and a level display element including a plurality of segments, and a display signal by selecting one of the shake amount signal or the photographing signal. Generating a display control means, and using the scale and the level display element corresponding to the selected signal, to display any one of the imaging information value or the shake amount. Camera shake display device. 2. A camera shake display device for a camera according to claim 1, wherein said display control means selects the shake amount signal according to a half-pressed state of a release button to generate a display signal. 3. The camera shake display according to claim 1 or 2, wherein the display of the shake amount on the display means is a display whose display level changes in accordance with the amount of the shake amount to be displayed. apparatus. 4. A shake detection means for detecting a shake amount of a camera based on an output of a shake detection sensor, a display means for displaying a photographing information value of the camera, and a shake amount being a predetermined amount in a photographing result. A camera shake display device for a camera, comprising: a conversion unit that converts the amount of shake into a corresponding information value that is a corresponding imaging information value, and displays the corresponding information value on the display unit. 5. The camera shake display device according to claim 4, wherein the corresponding photographing information value is displayed, and at the same time, the photographing information value currently set is also displayed on the display means. 6. The camera shake display device according to claim 4, wherein the shooting information value is a shooting shutter speed. 7. The camera shake display device according to claim 4, wherein the display of the shake amount on the display means is started by half-pressing a release button. 8. The camera shake display according to claim 4, wherein the display of the shake amount on the display means is a display in which the display level changes in accordance with the amount of the shake amount to be displayed. apparatus.