JPH04204634A - Automatic controller for camera and enlarger and medium for recording image - Google Patents

Abstract

PURPOSE:To selectively obtain a picked-up image having a image effect with good degree by automatically deciding plural sets of shutter speed and stop value and taking plural picked-up images whose degree of the image effect is made different. CONSTITUTION:An automatic controller 40 is constituted of a multistage exposure value decision means 110, an exposure deciding and selecting input 112, and an automatic exposure control means 116. The means 110 decides plural sets of shutter speed and stop value in accordance with the output of an exposure meter 102 and the output of the input 112. The means 116 outputs a signal to an automatic exposing means 118 on the outside of the controller 40 in accordance with the output (plural sets of shutter speed and stop value) from the means 110. Thus, the plural images whose image effect is different (degree is different) is easily taken.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic control device for a camera and an enlarger, and a medium for recording images used in photography with the camera.
In particular, it is used in automatic control devices for photographic machines and enlargers, which facilitate the realization of various visual effects, and in media for recording images.

[Prior Art] In recent years, camera cameras have been equipped with techniques such as releasing the camera at an appropriate exposure level on a medium for recording images such as photographic film (hereinafter simply referred to as photographic film), advancing the film after shooting, and shooting all frames. Not only the rewinding of the film after shooting has been automated, but also the focusing of the shooting lens.

In addition, conventionally, when it comes to releasing the film at the appropriate exposure level (hereinafter referred to as automatic exposure control), the exposure level on the photographic film is set appropriately based on the aperture value set by the photographer in advance. The so-called aperture-priority automatic exposure control, in which the camera is released at a shutter speed that is set in advance, and the so-called shutter-speed priority automatic exposure control, in which the shutter speed is set in advance by the photographer, and the shutter speed is released at an aperture value that provides an appropriate amount of exposure to the photographic film. Automatic exposure control is performed in which the shutter speed or aperture value is determined based on a measured exposure value using a relatively simple algorithm.

Furthermore, in recent years, not only the shutter speed and aperture value are automatically determined based on the measured exposure value, but also other photographic conditions are used to automatically determine the shutter speed and aperture value. There are automatic exposure control cameras that automatically determine the exposure while also taking into account various factors.

In March 1990, the camera with automatic exposure control, which automatically determines exposure while taking into consideration various shooting conditions, was released in March 1990.
Model EO31 manufactured by Canon Co., Ltd. released in February
-AF/AE of 0 (aut.

focus/auto exposure) - There are reflex cameras.

This EO310 is equipped with a CCD (c
The amount of hand movement of the camera is detected from the output of the range sensor (arized coupled device) sensor, and based on this amount of hand movement, the shutter speed is automatically set to keep the effect of hand fullness on the image actually shot to below a predetermined value. This camera has an automatic exposure control function (hereinafter referred to as manual exposure limit program AE).

According to this hand-held limit program AE, even a novice photographer can easily take pictures with less hands-full.

In addition, the EO510 can read and set various video effect conditions using barcodes, and takes these various video effect conditions into consideration when determining the shutter speed and aperture value from the measured exposure value. The camera has an automatic control function (hereinafter referred to as an alto code program) that automatically determines an appropriate shutter speed and aperture value. According to this art code program, the photographer can select a predetermined video effect in advance and easily realize the selected video effect, even if the photographer has no experience in photography.

Furthermore, the 1990 September camera was the first camera to automatically control exposure, taking into consideration a variety of shooting conditions.
Model F-601 manufactured by Nikon Co., Ltd. released in April
AF/AE (auto focus/auto
Exposure) - There is an eye reflex camera.

This F-601 not only automatically determines both the shutter speed and aperture value from the measured exposure value, but also Photographs with an automatic exposure control function (hereinafter referred to as multi-program auto) that automatically determines the appropriate shutter speed and aperture value, taking into account the maximum aperture value, minimum aperture value, and focal length of the lens used. It has become a machine. According to such multi-program auto, even a novice photographer can determine an appropriate shutter speed and aperture value, taking into consideration several photographing conditions.

In addition, this F-601 adjusts the measured exposure value to appropriate exposure and overexposure from the exposure amplifier for each exposure compensation value range preset by the photographer, in stages for the number of shots preset by the photographer. This camera has an automatic shooting function (hereinafter referred to as an auto bracketing function). This step-by-step automatic shooting using the auto bracketing function for the number of shots preset by the photographer is configured so that frame-by-frame advance of the shooting film and subsequent release are performed automatically. . According to such an automatic shooting function, even a beginner photographer can respond to an appropriate exposure amount taking into consideration several video images.

In addition, enlargers that have been used in recent years independently measure the brightness at multiple locations within one frame of photographic film to obtain multiple measured image exposure values, and then calculate a predetermined value from these multiple measured image exposure values. There is an enlarger that has an automatic print exposure function that determines a determined exposure value using an algorithm and automatically exposes at this determined exposure value. With an enlarger having such an automatic print exposure function, high quality prints can be automatically and efficiently obtained.

[Problem to be achieved by the invention] However, even if even beginners can easily realize various video effects and images due to the automatic functions of such conventional camera, beginners are unable to understand the realized video effects. There is a problem in that it is difficult to understand the meaning of images and images.

In particular, you may be unable to recognize and understand the specific details of what kind of shooting data (aperture value, shutter speed, etc.) the achieved video effect or image is based on, or
Beginners are unable to learn the relationship between basic video effects and video images and shooting data (aperture value, shutter speed, etc.) and utilize this knowledge in future shooting.

In addition, shooting conditions that cannot be automated with a camera, such as
It is difficult for beginners to perform video processing such as the state of the light beam at the time of shooting and processing of the background in relation to the video effect or video image that they are trying to achieve. It is also becoming difficult to understand.

Further, the stepwise automatic photographing using the conventional auto-blaguing function described above has a problem in that the photographer must set the exposure correction value range and the number of shots to be taken in advance.

Settings for the exposure compensation value range and number of shots not only vary depending on the shooting conditions and video image, but also depending on the media used to record the video, making it difficult to determine the settings for the exposure compensation value range and number of shots. It is something.

For example, if the medium used to record images is universal film, the range of exposure correction values will be narrow.

Furthermore, if there are objects with greatly different exposure values within the photographing range, a large number of photographs are required.

Alternatively, it is necessary to set the exposure compensation value range and the number of shots for each part where the exposure value greatly differs, and take multiple shots. In this case, multiple sets of exposure compensation value ranges and number of shots must be determined. I had to set it up and release it multiple times.

For example, if the medium used to record images is negative film, the latitude value will vary depending on the brand of negative film being used, so measure the latitude value for each brand of negative film and use the autobrush function accordingly. The photographer must set the exposure compensation value range and number of shots in advance each time the automatic shooting is performed step by step using the keting function.

Furthermore, a problem of a nature different from the above-mentioned problem is that even if the camera automatically applies certain image effects to a recording medium such as photographic film, it cannot be enlarged. There was a problem in that this image effect was not sufficiently reflected in the final images such as prints.

For example, when photographing a person in a backlit situation, the camera automatically compensates the exposure to compensate for the fact that the person will be blurred due to underexposure, thereby automatically producing a good negative film. Sometimes, if the enlargement determination exposure value is calculated based on the average brightness within the frame of the video recording of the negative film and the enlargement is automatically performed, the enlarged print of the person will be The image would be blurred due to underexposure, making it pointless to automatically apply positive exposure compensation when shooting.

The present invention was made in order to solve the above-mentioned conventional problems, and aims to improve the quality of video shooting or enlarged print quality, and also effectively realizes various video effects as necessary. The purpose of the present invention is to provide an automatic control device for a photographic machine and an enlarger, and a medium for recording images.

[Means for Achieving the Object] The present invention provides an exposure meter that measures the brightness within the frame of the photographed area to obtain a measured exposure value, and an exposure meter that is capable of automatic exposure with a determined exposure value based on a predetermined shutter speed and aperture value. In an automatic control device of a camera that is built in or connected to a camera having an automatic exposure means, a plurality of sets of shutter speeds and aperture values for different video effects are set according to the measured exposure value. a multi-step exposure value determination means for determining a plurality of sets of determined exposure values; and an automatic exposure control means for automatically performing multiple shootings according to the plurality of sets of determined exposure values based on the plurality of shutter speeds and aperture values. This is an automatic control device for a camera that can automatically shoot multiple images with different image effects.

The present invention also includes means for reading data regarding the recording latitude of a pre-recorded image on a medium for recording the image as a recording medium latitude value, and the multi-stage exposure value determining means is configured to adjust the image effect according to the measured exposure value. An automatic control device for a photographic machine is characterized in that the multi-stage exposure value determining means uses the recording medium latitude value when determining a plurality of sets of determined exposure values for each difference.

Further, the multi-stage exposure value determining means for determining a plurality of sets of determined exposure values may be configured to perform a plurality of functions of an exposure determining algorithm for determining a plurality of sets of determined exposure values, which is stored in a predetermined storage means, as an exposure determining function selection algorithm. This is an automatic control device for a camera, characterized in that it has a multi-stage exposure value determining means that determines or changes the exposure value according to the following.

Furthermore, the automatic I! camera built in or connected to a camera equipped with a control device capable of digital processing is used. The f# device is an automatic control device for a camera, characterized in that it has means for recording photographic data on a video recording medium in a form that can be read as numerical data by a predetermined means.

The invention also includes an exposure meter that measures the brightness within the photographic range frame to obtain a measured exposure value, and an exposure compensation means that corrects the measured exposure value according to an exposure compensation value set by the photographer. In an automatic camera control device that is built into a camera that has a camera, or is connected to the camera, the exposure meter measures the brightness at multiple locations within the photographic range frame to obtain a single measured exposure. and a plurality of reference exposure measurement values corresponding to a plurality of locations within the photographic range frame, the second measurement exposure value corrected by the exposure correction means, and the plurality of reference exposure measurement values. Compare with
The camera is characterized by comprising: exposure measurement position detection means for determining a location within the photographed range frame corresponding to a reference exposure measurement value that is equal to or close to the second measurement exposure value and outputting the location as an exposure measurement position signal. This is an automatic control device for a camera.

Further, a video recording exposure measuring means for determining at least one measured video exposure value by measuring the brightness within a frame of a video recording of a video recording medium, and an automatic print exposure means that can be automatically controlled with a predetermined determined exposure value. In an automatic control device for an enlarger built in or connected to an enlarger having means for reading as numerical data; an enlargement exposure value determination means for determining an enlargement determination exposure value using the photographic data and the measured image exposure value data; and according to the enlargement determination exposure value, This is an automatic control device for an enlarger, which is equipped with automatic print exposure means that automatically performs enlargement exposure, and is capable of producing enlarged prints that reflect the photographer's intentions.

Further, a medium for recording images taken by a photographing device such as a camera is characterized in that data regarding the latitude of recording images on the medium is provided in a form readable using a predetermined means. It is a medium for recording images.

Further, in a medium for recording images taken by a photographing device such as a camera, the image is recorded, which is characterized in that the photographed data is provided in a form that can be written and read as numerical data using a predetermined means. It is a medium for

[Operations and Effects] First, the present invention aims to improve the quality of video shooting or the quality of enlarged prints, and also improves the automatic camera function that effectively realizes various video effects as needed. This was done on an exposure device.

Various shooting conditions that can be automatically controlled, including improving the quality of video shooting or the quality of enlarged prints, can be adjusted by adjusting shutter speed, aperture value, and auxiliary light (strobe, etc.). Video effects (points to note regarding video effects)
There are the following:

A. Differences in video effects due to differences in exposure compensation values.

(By performing exposure correction on the measured exposure value obtained with a light meter, it is possible to obtain so-called high-key or low-key video effects.) B--Differences in video effects due to differences in shutter speed.

- (For a moving subject, different video effects can be obtained depending on the relationship between the motion speed or motion speed of the subject and the shutter speed.

Differences in video effects due to differences in C6 aperture value.

(By adjusting the aperture value of the photographic lens, you can adjust the characteristics of the photographic lens such as the depth of field and obtain different image effects.)D. Differences in visual effects due to differences in light intensity ratios.

(By adjusting the ratio of the light intensity between the auxiliary light such as a strobe, the background light, and the light intensity, for example, you can photograph a subject that is mainly illuminated by the auxiliary light and a subject that is mainly illuminated by the background light.) (The ratio of brightness can be adjusted, and the image effect can be varied.) It is impossible to accurately check the degree of the image effect at the time of shooting (before the release). However, such adjustments to video effects depend on the experience of the photographer.

However, the automatic camera control device of the present invention allows
When a plurality of captured images are efficiently shot with different degrees of image effects, it is possible to select a captured image with a better degree of image effect from among these plurality of captured images. Therefore, even a novice photographer can not only obtain a photographed video with just the right level of video effect, but also efficiently learn techniques related to this video effect.

Note that efficiently shooting a plurality of images with different degrees of image effects means, at least, automatically determining multiple sets of shutter speeds and aperture values that have different degrees of image effects. .

Furthermore, in the camera automatic control device of the present invention, if the medium for recording shot images is a roll film capable of continuous shooting, for example, a plurality of shot images can be recorded with different degrees of such image effects. When photographing, if the frame-by-frame advance of the photographic film and the second and subsequent releases are automatically performed, such multiple photographing can be performed more efficiently. In this case, for example, the number of shots per unit time has increased due mainly to improvements in the mechanical performance of motor drives in recent years, so a camera equipped with such a motor drive can take 2 to 3 shots. Continuous shooting of approximately 1/2 second takes about 1/2 second, and there is no major problem even if continuous shooting is performed.

Further, in this way, the automatic control device for a camera according to the present invention allows the multi-stage exposure value determination means to determine a plurality of sets of determined exposure values when photographing a plurality of images with different degrees of image effects. The exposure determining function selection algorithm may be one that determines or changes a plurality of functions of an exposure determining algorithm for determining a plurality of sets of determined exposure values, which is stored in the storage means of. The inventor discovered the following.

A. The brightness of each part of the photographed range frame that is divided and metered, or the difference between each part, and the number of parts of the same or almost the same brightness that are adjacent blocks (blocks). The function of the exposure determination algorithm is selected to efficiently shoot a plurality of images by changing the exposure correction value according to the size of the image (the size of the image). (For example, by detecting a large difference in the brightness of each part of the frame to be photographed that is measured separately, such as when shooting against the light, the system can efficiently process multiple images by using different exposure compensation values. (Select the exposure determination algorithm function for good shooting) B. Movement of the subject within the subject area frame (amount of blur)
, and selects the function of an exposure determination algorithm that efficiently shoots a plurality of images by varying the shutter speed according to the state of motion blur or the state of blur of the photographer.

(For example, select an exposure determination algorithm function that detects large movement (amount of blur) of the subject within the subject range frame and efficiently captures multiple images by varying the shutter speed.) C4 Photography range Detects the distance (focus position) of the subject within the frame, and determines the continuity or dispersion of changes in the distance (focus position) of each part of the subject and the depth of field of the photographic lens. Depending on the characteristics, the function of the exposure determination algorithm is selected to efficiently shoot a plurality of images by changing the aperture value.

In this way, when multiple functions of the exposure determination algorithm of the multi-stage exposure value determination means are determined or changed by the exposure determination function selection algorithm, a plurality of captured images are taken with different degrees of video effects. You can do things more efficiently. Furthermore, after shooting the plurality of captured images, it is possible to select a captured image with just the right degree of image effect from the plurality of captured images. Therefore, even a novice photographer can not only obtain a photographed video with just the right level of video effect, but also efficiently learn techniques related to this video effect.

In order to obtain different image effects due to differences in exposure compensation values,
According to an example of the automatic control device for a camera of the present invention, an exposure compensation value is determined completely automatically or semi-automatically in conjunction with a predetermined photographer's operation, and the exposure compensation value is determined completely automatically or in conjunction with a predetermined photographer's operation. In addition to determining the number of shots to be taken, at least one auto-blagging median value is determined either automatically or semi-automatically in conjunction with a predetermined photographer's operation, or only according to the photographer's settings, and at least one of these auto-blagging It is also possible to configure a function that performs automatic photographing in stages for the determined number of images in one direction of underexposure and one direction of overexposure, centering on each median value. Further, it is also possible to perform stepwise automatic photographing so that the frame-by-frame advance of the photographic film and the second and subsequent releases are performed automatically.

That is, in the automatic control device for a camera according to the present invention, the exposure compensation value range is determined completely automatically or semi-automatically in conjunction with a predetermined photographer's operation by the multi-stage exposure determining means.
Furthermore, the determined number of shots is determined either completely automatically or in conjunction with a predetermined photographer's operation, and furthermore, at least one option is determined either automatically or in conjunction with a predetermined photographer's operation, semi-automatically, or only according to the photographer's settings. ~Determine the autobracketing median (and the number of autobracketing medians). Furthermore, in the automatic control device for a camera according to the present invention, the automatic exposure control means automatically adjusts the number of images to be taken in the direction of underexposure and overexposure, centering on each of the at least one median value of the autobraguete ink. Performs step-by-step automatic shooting.

In such an automatic control device for a camera according to the present invention, automatic shooting is performed stepwise in one direction for underexposure and in one direction for overexposure based on at least one of these autoblagging median values for the determined number of shots. In this case, the number of auto bracketing median values mentioned above, the value of each auto bracketing median value (determined exposure value or
(Shutter speed and aperture value based on this determined exposure value),
The above-mentioned exposure compensation value range, the specific method of realizing this exposure compensation value range (shifting the shutter speed, aperture value, or both), and the above-mentioned determined number of shots are determined as follows. can do.

First, when the number of auto-bracketing median values is set to a plurality of values, the total number of determined photographic images can be reduced.

For example, when photographing a person with the sun setting behind the horizon using a reversal film with a relatively narrow latitude without using auxiliary illumination means, the measured exposure values of various parts within the photographic frame will differ greatly from each other. For example, the sun part and the human part have 6EV (exposure).
It is expected that the value will be more than that.

Under these shooting conditions, if conventional auto-bracketing shooting is performed with an exposure compensation value range of 1/3EV, a total of 20 or more shots must be taken (for example, with an IEV width above and below). (25 shots are required if the EV is 6 + 2 EV) On the other hand, the inventor calculated the auto-bracketing median value corresponding to a total of 3 locations: the sun, the sun's periphery, and the person's area. The number of objects is 3, and the auto bracketing median values of these three are the appropriate exposure values for the sun, the surrounding area of the sun, and the person, respectively, and 1/3E
If you perform automatic shooting in stages with the exposure compensation value range of V and the number of shots determined at each auto bracketing median value of 3 or 5, the total number of shots will be 3X3.
It has been found that = 9 pieces or 5 x 3 = 15 pieces is sufficient.

In addition, according to a light meter that can divide the photographic range frame into each part and measure the brightness of each part, the number of auto bracketing median values mentioned above, the value of each auto bracketing median value ( The inventor has discovered that it is possible to automatically determine the determined exposure value (or the shutter speed and aperture value according to the determined exposure value). By automating the determination of the number of auto-bracketing median values, the value of auto-bracketing median values, etc., it is possible to reduce the complexity of various setting operations caused by multiple auto-bracketing median values. can.

For example, depending on the brightness itself of each part within the photographed range frame, the mutual difference, the number of adjacent parts of the same or almost the same brightness (block size), etc. The inventors have discovered that the number of autobracketing median values described above can be automatically determined. Furthermore, at this time, each auto bracketing median value (determined exposure value or shutter speed and aperture value according to this determined exposure value)
The inventors have discovered that can be automatically determined according to the brightness of the corresponding portion within the photographic range frame corresponding to the corresponding autoblagging median value.

In addition, the exposure compensation value range and the determined number of shots can be either one of these or a combination of both, as described later, on the medium for recording the shot images (film, etc.)
It can also be determined automatically by using the latitude of the video recording of the medium read from.

In addition, if the number of auto-bracketing median values is multiple in the determined exposure compensation value range and determined number of shots, for example, the determined exposure is corrected to overexposure from the smaller auto-bracketing median value. and the determined exposure, which is underexposure-compensated from the larger auto-bracketing median value, overlap or are close together (
(close compared to the size of the exposure compensation value range), you may cancel the shooting of the corresponding determined exposure to reduce the number of shots, or modify the determined exposure value.
According to this, each staged photographing can be made more effective.

Furthermore, if at least one of the number of auto-bracketing median values or the number of shots determined for each auto-bracketing median value is a variable number, the total number of shots will also be variable and undefined. Therefore, an upper limit is set for this total number of shots, and used as one of the determining conditions when determining at least either the number of auto bracketing median values or the number of shots to be determined for each auto bracketing median value. You can also do it.

Or, if the number of auto-bracketing median values or the determined number of shots for each auto-bracketing median value is determined, the total number of shots determined by this is larger than the preset upper limit for the total number of shots. If it is, the display in the viewfinder and the alarm sound will alert you.
You can warn the photographer. Doing this will result in more shots being taken than the photographer expected, unnecessarily consuming film, and prolonging the shooting time. It is possible to prevent this from happening.

According to such an automatic shooting function, even a beginner photographer can respond to an appropriate exposure amount taking into consideration several video images. Furthermore, compared to the conventional auto bracketing function, it has the excellent feature of reducing various setting operations and reducing the number of shots required, allowing for effective step-by-step shooting. It has become.

In addition, in the automatic control device for a camera of the present invention, if the photographic data is recorded on a medium for recording photographed images in a form that can be read as numerical data by a predetermined means, the photographic data after the photographing is recorded. The photographer can check the information accurately and utilize the experience in future shooting.

In the past, there have been devices in which photographic data is imprinted onto a photographic film, but these do not take into consideration the fact that the data must be read as numerical data by a predetermined means after photographing. Therefore, in the case where photographic data is imprinted along with a photographic image in a photographic frame on a photographic film, there is a problem that the imprint of the photographic data cannot be removed from the printed photographic image. In addition, when shooting data is imprinted around the photographed image, such as between frames on the photographic film, it is not only difficult to easily read this small photographic data, but also There was a problem in that the image was damaged when cutting every predetermined number of frames after development.

Note that the present invention does not limit the photographic data to be recorded on a medium for recording photographed images in a form that can be read as numerical data by a predetermined means. However, as long as it can be converted into shift JIS code data, characters such as kanji characters may be recorded.

For reference, types of photographic data to be recorded on a medium for recording photographed images in a form that can be read as numerical data by a predetermined means are listed below.

A- Date and time when the relevant photographed video was taken B2 Shutter speed, aperture value, and exposure compensation value at the time of photographing the relevant photographed video Photography frame number C9 Exposure measurement position signal as defined in the present invention of the relevant photographed video Data D, numerical values set by the photographer and characters such as kanji E- PCM (pulse code) recorded at the time of photography
modulation) data (for example, when shooting sports news photos, if the audio of the live radio broadcast of the Sault Boats during the shooting is recorded for a predetermined period of time before and after the moment of release, the (The meaning of the subject of each video can be easily understood.) Furthermore, the present invention provides a method for recording photographed data on a medium for recording photographed video in a form that can be read as numerical data by a predetermined means. The recording format and the position on the medium are not limited. That is, it is acceptable as long as it can be read as numerical data by a predetermined means.

For reference, types of recording formats that can be read as numerical data by a predetermined means in media for recording photographed images are listed below.

A. Imprinting a conventional image-format coat, such as a barcode, onto the medium.

B. Imprinting a code of a new code system suitable for recording photographic data onto a medium (one that is easy to record the aforementioned type of photographic data and is easy to imprint with a camera).

The C0 medium is provided with a structure capable of magnetically storing numerical data (for example, a magnetic material coated on a part of the film portion of photographic film).

D. IC (integrated circ
uit) Provide a configuration such as a memory that can electrically store numerical data.

E.Only the serial number or other identification number should be written on the medium itself.
The photographic data itself is stored in a data storage means independent of the medium in association with an identification number such as a serial number, whether installed in advance or newly.

For reference, types of recording positions on a medium for recording photographed video in a recording format that can be read as numerical data by a predetermined means as described above are listed below.

A. The surface of the case of the medium that records the photographed images (35mm film cartridge, etc.).

B. Inside of the case.

C5: When recording photographed data in the same portion of the medium itself as the recording portion of the photographed video, frame-by-frame advance or the like is performed. Alternatively, a total of 37 minutes of shooting data is recorded, including the last frame of the image in the recording section.)

D. The area around the recording area of the photographed image on the medium itself for recording the photographed image; for example, in the case of 35 mm photographic film, the area around the row of holes for film advance.

In the case of this part, it is also possible to apply a magnetic material (for recording photographic data) continuously in the longitudinal direction of the photographic film. ).

Further, in an automatic control device for a camera according to the present invention.

If the deviation regarding the latitude of video recording of the medium on which the photographed video is recorded is read out as the recording medium latitude value and used for determining the determined exposure value, the following effects can be obtained. can.

A. Especially when photographing with negative film, it is possible to effectively take multiple photographs using different exposure compensation values. That is,
Multiple shots can be taken using different exposure compensation values with fewer shots.

B. In particular, when photographing with negative film, it is possible to conveniently and temporarily automatically shoot with different film sensitivities in accordance with the image recording latitude of the medium on which the photographed image is recorded. For example, under dark shooting conditions, the film sensitivity can be automatically and temporarily shifted to a higher sensitivity in accordance with the image recording latitude of the medium on which the shot image is recorded. Also, for example, under bright shooting conditions, simply and temporarily, corresponding to the image recording latitude of the medium that records the captured image,
The film speed can be automatically shifted to a lower speed.

Furthermore, the inventor has discovered the following means for recording data regarding the latitude of video recording on a medium for recording photographed video.

A. The surface of the case of the medium that records the photographed image (it may also be a coded electrical contact in the form of a DX code conventionally provided on the surface of a 35 mm film cartridge for reading film sensitivity) ).

B. Inside of the case.

Further, in the automatic control device for a camera according to the present invention, the exposure meter that measures the brightness within the photographic range frame to obtain a measured exposure value measures the brightness at a plurality of locations within the photographic range frame. , is an exposure meter that calculates one measured exposure value and multiple reference exposure measurement values corresponding to multiple locations within the photographic range frame, and calculates the measured exposure value according to the exposure compensation value set by the photographer. The second measured exposure value corrected by the exposure correction means that corrects the second measured exposure value is compared with the plurality of reference exposure measured values, and the subject to be photographed corresponds to the reference exposure measured value that is equal to or close to the second measured exposure value. When an exposure measurement position detection means is used that determines a location within the range frame and outputs it as an exposure measurement position signal, the following effects can be obtained by this exposure measurement position signal.

A. By using this exposure measurement position signal and displaying it in the viewfinder, etc., the meaning of the exposure compensation value set by the photographer can be fed back to the photographer, making it possible to set a more appropriate exposure compensation value. Therefore, the quality of photographing can be improved. For example, when shooting a person in backlit conditions, if the photographer performs positive exposure compensation to properly expose the person, multiple reference exposure measurement values corresponding to multiple locations within the subject area frame may be used. By comparing the reference exposure measurement value that specifically corresponds to the human part with the second measurement exposure value that has been corrected according to the exposure compensation value set by the photographer, and displaying this result in the viewfinder, You can set the exposure of a part more precisely. In other words, before the photographer's exposure compensation, the display based on the exposure measurement position signal described above was a display indicating, for example, the background area, but as the photographer continues to perform exposure compensation, the display based on the exposure measurement position signal changes. By displaying the image to indicate the human part, exposure correction can be performed to properly expose the human part.

B. By storing this exposure measurement position signal in a means for recording a photographed image, for example, when printing this image, this exposure measurement position signal can be read out and the printing conditions can be appropriately determined. For example, when photographing a person in backlit conditions, even if the photographer uses the optimal positive exposure compensation to properly expose the portrait, the print quality of this photographed image may be improved. In this case, if the enlargement determination exposure is determined and printed according to the average brightness of the entire photographed image, the print of the human part may become dark and blurred. However, at the time of printing, by reading from the exposure measurement position signal stored in the means for recording the photographed image, it is possible to determine that the photographer has determined the exposure so that the position of the human part has the appropriate exposure. Prints that are close to the photographer's intentions can be obtained.

Note that the medium for recording photographed images of the present invention is not limited to photographic film using silver halide; in other words, it includes not only black and white photographic film, color negative film, and color reversal film, but also floppy film. The same effects of the present invention can be obtained by using a medium such as a disk or a magnetic tape in which photographed images are recorded magnetically. Further, this medium may be an optical disk or the like that is read optically.

[Example code] Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram of a camera according to a first embodiment of the present invention.

In FIG. 1, an automatic camera control device 40 is an automatic camera control device that can automatically capture a plurality of images with different video effects.

In FIG. 1, when photographing, an exposure meter 102 determines the measured exposure value of the subject from the output of the photometric sensor 100 according to the brightness of the subject, and outputs it to the multi-stage exposure value determining means 110 inside the automatic control device 40. .

Note that these photometric sensor 100 and exposure meter 102 are
It may be possible to divide the photographic range frame into a plurality of divided parts and obtain a plurality of measured exposure values. This will be described later using FIGS. 5(A) and 5(B).

In FIG. 1, the automatic control device 40 is composed of a multi-stage exposure value determining means 110, an exposure determination selection manual 112, and an automatic exposure control means 116.

The exposure decision selection manual 112 is used to input video effect selection operations performed by the photographer, that is, to determine which shooting conditions (shutter speed, aperture value, exposure compensation value, etc.) should be changed in multiple stages to take multiple shots. The multi-stage exposure value determining means 1 inputs and stores the selection operation, and also outputs the signal converted into a form that is easy to process.
10.

The multi-stage exposure value determining means 110 receives the output of the light meter 102,
According to the output of the exposure determination selection manual 112, a plurality of sets of shutter speeds and aperture values are determined.

This multi-stage exposure value determining means 110 first uses the exposure meter 102.
According to the output of and the output of the exposure determination selection input 112,
What shooting conditions (shutter speed, aperture value, exposure compensation value, etc.)
In addition to making a final decision on whether to change the
Decide how much to vary at each stage. At this time,
The amount of change at each stage may be the same or different.

Thereafter, the multi-stage exposure value determining means 110 determines a plurality of sets of shutter speeds and aperture values in accordance with the determined photographing conditions to be changed and the amount of change at each stage. At this time, if the shutter speed or aperture value, etc. is outside the shutter speed range of the camera, outside the aperture value range of the photographic lens, or is inappropriate for normal photography, The multi-stage exposure value determining means 110 is capable of automatically correcting the combination of shutter speed and aperture value. Alternatively, a warning is given to the photographer using a display in the viewfinder or an alarm sound (hereinafter, a warning using such a method will be simply referred to as a warning to the photographer) to prompt the photographer to change the operation.

The automatic exposure control means 116 includes the multi-stage exposure value determination means 110
A signal is output to the automatic exposure means 118 outside the automatic control device 40 according to the output (multiple sets of shutter speeds and aperture values). Specifically, the automatic exposure control means 116
For each multi-step photographing process, photographing conditions such as the combination of shutter speed and aperture value are output and set, and a release trigger signal is output at an appropriate timing.

The automatic exposure means 118 accurately records an image on a predetermined recording medium under shooting conditions such as shutter speed and aperture value set by the release trigger force signal, and also performs preparatory operations for the next release after shooting. Take control. Specifically, the automatic exposure means 118 is a combination of an electronic shutter unit, a motor drive unit, etc., and performs shutter release accurately under shooting conditions such as set shutter speed and aperture value, and also performs shutter charge exchange after release. Winds photographic film, etc.

As described above, according to the camera of the first embodiment of the present invention, it is possible to easily capture a plurality of images with different image effects (different degrees).

FIG. 2 is a block diagram of a camera according to a second embodiment of the present invention.

In this Figure 2, the code 100.102.110.1
12, 116, and 118 are the same as those with the same numerals in FIG. 1 described above.

In FIG. 2, the camera is particularly provided with latitude value reading means 104. In FIG.

This latitude value reading means 104 reads the latitude value of the medium 10 recorded on the outside of the medium 10 for recording images taken by this camera, and outputs it to the multi-stage exposure value determining means 110 inside the automatic control device 40. It is something to do.

Further, the automatic control device 40 of the camera according to the second embodiment of the present invention uses the recording medium latitude value input from the latitude value reading means 104, for example, when performing multi-stage photography with different exposure compensation values. That's what I do.

Therefore, according to the camera according to the second embodiment of the present invention, effective photographing conditions (shutter speed, aperture value, exposure compensation value, etc.) are adjusted according to the characteristics (latitude) of the medium 10 for recording images. You can make decisions and perform multi-stage shooting. Therefore, even with a smaller number of images, more effective photography can be performed. FIG. 3 is a perspective view of an example of a medium for recording images provided with latitude values used in the second embodiment of the present invention.

The medium for recording the image shown in Fig. 3 is 35 mm.
This is a photographic film 10a.

This 35mm photographic film 10a includes a 35mm photographic film itself 14a, a spool 12b on which the 35mm photographic film itself 14a is wound, and a spool 12b.
and a cartridge 12a for storing the 35 mm photographic film itself 14a wound therein in a light-shielded manner.

The cartridge 12a also includes DX:!, which is conventionally used for automatic setting of film sensitivity. ~Dog,
Along with h, film latitude values (recording medium latitude values) a and b are similar to these DX codes g and h.
, c, cl, and e are provided.

According to such an image recording medium (35 mm photographic film), the photographer can reliably set the latitude value of the image recording medium to be used in the camera.

FIG. 4 is a block diagram of a camera according to a third embodiment of the present invention.

In this FIG. 4, the code 100.110.116.1
Reference numeral 18 is the same as the one with the same reference numeral in FIG. 1 described above.

Compared to the above-described camera according to the first embodiment of the present invention and the camera according to the second embodiment, the camera according to the third embodiment of the present invention has the following features.
A total of two light meters 102a, 102b and an exposure determining function selection means 114 in the automatic control device 40 are used.

This exposure determining function selection means 114 includes a light meter 102a,
According to the measured exposure value input from 102b, it is determined whether or not to perform multi-stage photography, and the conditions for performing multi-stage photography (which photographing conditions, such as shutter speed and exposure compensation value, should be changed and to what degree to perform multi-stage photography). is determined automatically or according to semi-fixed settings made in advance by the photographer.

Therefore, according to the third embodiment of the present invention, even if the photographer is not conscious of it, in a shooting situation where multi-stage shooting is desirable (for example, shooting in a backlit condition), multi-stage shooting is automatically performed, and the You can get high quality footage.

Figure 5(A) shows the first method of dividing the photographic range frame.
FIG. 3 is an example layout diagram. Further, FIG. 5(B) is a layout diagram of a second example of a method of dividing the photographed range frame.

In the layout diagram of the first example, the photographic range frame is divided into five parts in total. On the other hand, in the layout diagram of the second example, the photographic range frame is divided into a total of 18 frames.

Conventionally, light metering has been carried out by dividing the photographed range frame. However, conventionally, as the number of divided frames of the photographic range increases, the algorithm for photometry becomes dramatically more complex, and it is not desirable to improve the photometry accuracy.

However, as mentioned above in the action and effect section,
By determining the determined exposure value together with the amount of exposure correction performed by the photographer, it is possible to improve the effect of increasing the number of divided frames of the photographed range.

FIG. 6 is a block diagram of a camera according to a fourth embodiment of the present invention.

In this FIG. 6, reference numerals 102 and 118 are the same as those of the same reference numerals in FIGS. 1 and 2 described above.

In FIG. 6, the automatic control device 40 of the camera is connected to the medium 10 on which the video is recorded via the photographic data writing means 22 of the camera and the medium storage data input/output means 24 of the medium 10 on which the video is recorded. The photographic data is written into the photographic data storage means 20 of.

Further, the medium storage data input/output means 24 of the medium 10 for recording this image is also used when reading photographic data from the photographic data storage means 20.

This photographic data is the one explained in the section of the above-mentioned operation and effect. For example, if the storage capacity of the photographed data storage means 20 of the medium 10 for recording video is large, the audio of the radio, which is the photographed data supply means 70, can also be encoded in PCM and recorded.

FIG. 7 is a side view of a first example of a video recording medium having a photographic data storage means used in the fourth embodiment.

In this FIG. 7, the medium storage data input/output means 24a
The photographic data storage means 20a is provided inside the spool 12b of the 35 mm photographic film.

This photographic data storage means 20a is a semiconductor memory.

Further, signal transmission between the photographic data writing means 22 of the camera and the medium storage data input/output means 24a of the medium for recording images is performed by inductance coupling.

Furthermore, power is supplied to the photographic data storage means 20a and the medium storage data input/output means 24a through inductance coupling when writing and reading photographic data.

FIG. 8 is a plan view of a second example of a video recording medium having a photographic data storage means used in the fourth embodiment.

In this Figure 8, 3 5 is a medium for recording images.
An identification label 20b for identifying photographic data is attached to the photographic film itself 14a.

No photographic data is stored in this 35mm photographic film itself 14a, and the identification code of the identification Rahel 20b is used as a key to write to or read from a Flobi disk, which is a photographic data storage means with a large storage capacity. . Therefore, a larger amount of photographic data can be stored.

Note that this Flobby disk can store photographic data of a plurality of 35 mm photographic films 14a.

FIG. 9 is a plan view of a third example of a video recording medium having a photographic data storage means used in the fourth embodiment of the present invention described above.

In this Fig. 9, a total of three areas indicated by symbols A, B, and C on the 35mm photographic film are each 1
This is the area where two portions of the image will be imprinted.

In particular, in area B and the portion between area B and area C, photographic data is recorded in a readable form as numerical data. That is, in area B, the barcode is printed in a reduced size, and is also printed in a shape 8 (character shape) that can be read as numerical data. Furthermore, a reduced barcode is printed in the area between area B and area C.

The photographic data is imprinted in a form that can be read as numerical data by the photographic data writing means 22b.
Imprinting is performed while synchronizing the film transport at a constant speed with the film transport speed detector 22c.

This photographic data writing means 22b is a linear array of very small exposure means, and the presence or absence of exposure by each of these small exposure means becomes a pixel.

FIG. 10 is a block diagram showing the form of an automatic control device for a camera to which the present invention is applied.

The automatic control device 4a of the camera to which the present invention is applied may be, as shown in FIG. It may also be a so-called data bag (a part of the exterior of the camera). Furthermore, the automatic control device 40b of the camera to which the present invention is applied may be built into the main body of the camera 50, as shown in FIG. 10(B).

Further, an automatic control device 4 for a camera to which this invention is applied
0a and 40b can be implemented using a microprocessor. At this time, some parts such as this microprocessor may be shared with other control devices, such as automatic exposure means (electronic shutter or motor drive control means).

FIG. 11 is a block diagram of an enlarger according to a fifth embodiment of the present invention.

In FIG. 11, the medium 10 for recording video includes:
Along with video recording, shooting data for each video recording is also recorded.

The photographic data reading means 23 reads the medium 1 for recording the video.
This is to read out the shooting data for each recording of each video of 0.

Further, the video recording exposure measuring means 130 reads the recording of each video recorded on the video recording medium 10 according to the photographic data read out by the photographic data reading means 23, and prints the corresponding video. 1, the exposure amount, that is, the video recording exposure, is measured and output to the automatic print exposure means 138.

The automatic print exposure means 138 accurately exposes the print paper according to the settings made by the output of the video recording exposure measurement means 130.

As described above, according to the enlarger of the fifth embodiment of the present invention,
When printing video records, it is possible to better understand the photographer's thoughts, shooting conditions, etc. from the photographic data for each recording of each video on the video recording medium 10, and it is possible to perform higher quality prints.

Note that the latitude of the present invention refers to the exposure latitude of a medium for recording images, such as a photosensitive material, and is a tolerance range that allows overexposure or underexposure. Therefore, if exposure is performed using a camera (recording on a medium for recording images) within this latitude range, it is possible to obtain the same or almost the same reproduced image (print, etc.) from the medium for recording images. I can do it.

Further, the latitude-related data of the present invention may be any data that can grasp the exposure latitude of a medium for recording images, such as the above-mentioned photosensitive material.

For example, it may be possible to roughly grasp the exposure latitude of the medium on which images are recorded, such as simply °°dog', '°medium', or small, and one EV value can cover the width of the latitude range. It may be data that shows the positive and negative directions of two EV values independently, or it may be data that simply indicates the type or brand of the media used to record the video. If it is used for the same purpose as the data regarding the latitude of the present invention, it can be considered to be the same as the data regarding the latitude of the present invention.

This is because, for example, by knowing whether a color film is a reversal film or a negative film, it is possible to roughly understand the exposure latitude of the medium on which images are recorded.

[Effects of the Invention] As explained above, according to the present invention, it is possible to improve the quality of video shooting or the quality of enlarged prints, and to effectively realize various video effects as needed. An excellent effect can be obtained in that an automatic control device for a camera and an enlarger and a photographic film can be realized.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a camera according to a first embodiment of the present invention, FIG. 2 is a block diagram of a camera according to a second embodiment of the present invention, and FIG. 3 is a photograph of the second embodiment. FIG. 4 is a block diagram of a camera according to a third embodiment of the present invention; FIG. The first method of dividing the range frame
The example layout diagram, Figure 5(B), shows the second method of dividing the photographic range frame.
Example layout diagram. FIG. 6 is a block diagram of a camera according to a fourth embodiment of the present invention. FIG. 7 is a side view of a first example of a video recording medium having a photographic data storage means used in the fourth embodiment. FIG. 8 is a plan view of a second example of a medium for recording images having a photographic data storage means used in the fourth embodiment, and FIG. FIG. 10 is a block diagram showing a form of an automatic control device for a camera to which the present invention is applied; FIG. 11 is a plan view of a third example of a video recording medium having a data storage means; FIG. It is a block diagram of a 5th example. 1-5. 1a, lb, 2a--2d, 3a-3d. 4a to 4d, 5a to 5d... Each divided portion within the photographed range frame, 10... Medium for recording video, 10 a... 35mm photographic film, 12a
......Patrone, 12b-...Spool, 14a...35mm photographic film itself, 20
a... Shooting data storage means, 20b...
・Identification label, 22a, 22b... Photography data writing means,
22c --- Film feed speed detector, 23--
...Photography data reading means, 24a...
Media storage data input/output means, 40.40a, 40b...
. . . automatic control device, 70 . . . photographic data supply means (radio, etc.). 50-... Photographer, 100-... Photometric sensor, 102.102a, 102 b...=- Exposure meter, 10
4-... Latitude value reading means, 110.
. . . Multi-stage exposure value determination means, 112 . . . Exposure determination selection input, 114 . . . Exposure determination function selection algorithm, 116 . . . Automatic exposure control means, 1
18...--Automatic exposure means,

Claims (1)

[Claims] (1) An exposure meter that measures the brightness within the frame of the photographed area to obtain a measured exposure value, and an automatic exposure means that can automatically expose at an exposure value determined by a predetermined shutter speed and aperture value. In an automatic control device for a camera, which is built into a camera having a camera or is connected to the camera, a plurality of sets of shutter speeds and aperture values for different video effects are created according to the measured exposure value. a multi-step exposure value determining means for determining the determined exposure value; and an automatic exposure control means for automatically performing multiple shootings according to the plurality of sets of determined exposure values based on the plurality of shutter speeds and aperture values. , an automatic control device for a camera that can automatically shoot multiple videos with different video effects. (2) In claim 1, the multi-stage exposure value determining means further comprises means for reading data regarding the recording latitude of a pre-recorded image of a medium on which the image is recorded as a recording medium latitude value, and the multi-stage exposure value determining means comprises the step of: According to the value
An automatic control device for a photographic machine, characterized in that the device is a multi-stage exposure value determining means that uses the recording medium latitude value when determining a plurality of sets of determined exposure values for different video effects. (3) In claim 1, the multi-stage exposure value determination means for determining a plurality of sets of determined exposure values executes a plurality of functions of an exposure determination algorithm for determining a plurality of sets of determined exposure values, which is stored in a predetermined storage means. 1. An automatic control device for a camera, characterized in that it is a multi-stage exposure value determining means that determines or changes an exposure value by an exposure determining function selection algorithm. (4) Photographic data can be read as numerical data by a predetermined means in an automatic control device of a camera that is built in or connected to a camera equipped with a control device that can perform digital processing. 1. An automatic control device for a photographic machine, characterized in that it has means for recording an image on a recording medium. (5) An exposure meter that measures the brightness within the photographic range frame to obtain a measured exposure value, and an exposure compensation means that corrects the measured exposure value according to an exposure compensation value set by the photographer. In an automatic control device for a camera that is built in or connected to a camera, the exposure meter measures the brightness at multiple locations within the photographic range frame to make one measurement. A light meter that calculates an exposure value and a plurality of reference exposure measurement values corresponding to a plurality of locations within the photographic range frame, and a second measurement exposure value corrected by the exposure correction means;
Exposure that compares the plurality of reference exposure measurement values to determine a location within the photographic range frame that corresponds to a reference exposure measurement value that is equal to or close to the second measurement exposure value, and outputs the location as an exposure measurement position signal. An automatic control device for a camera, comprising: a measurement position detection means; (6) Video recording exposure measuring means for determining at least one measured video exposure value by measuring the brightness within a frame of video recording of a video recording medium, and automatic print exposure that can be automatically controlled with a predetermined determined exposure value. In an automatic control device for an enlarger, which is built in or connected to an enlarger, the enlarger has a means for controlling each frame of a video record of the medium recorded on the medium. means for reading data as numerical data; enlargement exposure value determining means for determining an enlargement determination exposure value using the photographic data and the measured image exposure value data; and according to the enlargement determination exposure value. , automatic print exposure means for automatically performing enlargement exposure, and an automatic control device for an enlarger capable of producing enlarged prints that reflect the photographer's intentions. (7) For a medium that records images taken by a camera such as a camera, data regarding the latitude of recording images on the medium,
A medium for recording images, characterized in that the medium is provided in a form that can be read using a predetermined means. (8) A medium for recording images taken by a photographing device such as a camera, which is characterized in that the photographed data is recorded in a form that can be written and read as numerical data using a prescribed means. Recording medium.