JPH0720535A - Camera - Google Patents

Abstract

PURPOSE:To easily execute the conversion of the color temperature of a field, even the delicate color adjustment of the field, without consuming handling the according to photographing conditions such as the illumination light source of the field or the type of a film by freely using a single color temp. meter or a filter converting the color temperature or the like and to obtain a photograph having a color on which the intention of a photographer is reflected. CONSTITUTION:By providing a transmission type color liquid crystal 6 for a means converting the color temperature of the field, light transmitted through a photographing lens system is passed through the liquid crystal 6 colored according to information inputted from a transmission type color liquid crystal actuation means 5 and the color temperature of the field is converted. Then, the film is exposed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera for converting a color temperature of a field.

[0002]

2. Description of the Related Art Conventionally, when a photograph is taken by a camera, it is often printed in a color different from the color seen when the photograph was taken. In the current daylight type color film and its printing system, the standard light source is light with a color temperature of 5500K, and the subject is about 55
This is because the system is such that the color tone of the subject is best reproduced when photographed under the illumination of 00K. Therefore, when the subject is photographed under an illumination other than about 5500K, or when a daylight type film such as a tungsten type film is used, or an inexperienced print operator prints without taking the photographer's intention into consideration. Because it will The photographer can use a single color thermometer depending on the illumination light source of the scene and the type of film,
It was necessary to make the best use of a filter to convert the color temperature by using intuition or to perform color correction at the time of printing by an experienced printing operator.

[0003]

Conventionally, in order to change the color temperature in photography, it is troublesome and time-consuming to replace the filter for changing the color temperature according to the illumination light source of the subject or the type of film. However, there is a problem in that it is difficult to adjust the proper color, and in the case of performing color correction at the time of printing, the color intended by the photographer may not be obtained even if a skilled printing operator performs it.

The present invention solves these problems. The color temperature of the object field is easily converted, and the color temperature of the object field exposed on the film surface is recorded at the time of taking an image. It is intended to provide a camera for obtaining a photograph of reflected color.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a transmissive color liquid crystal is provided as a means for converting the color temperature of the object field so that the color temperature of the object field can be easily converted, and the intention of the photographer can be improved. Get a photo with reflected colors.

[0006]

The light passing through the taking lens system passes through the colored transmission type color liquid crystal in accordance with the information inputted from the transmission type color liquid crystal operating means, whereby the color temperature of the object field is converted and the film is converted. Expose the surface.

[0007]

EXAMPLE An example of the present invention will be described below.

FIG. 1 is a diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a view showing the arrangement of the constituent elements of the present invention with a camera and a lens being shown in cross section.

1 and 2, 1 is a film identifying means, 2 is a color temperature measuring means, 3 is a color temperature manual setting means, 4
Is a color temperature correction information processing unit, 5 is a transmissive color liquid crystal operating means, 6 is a transmissive color liquid crystal, 7 is a recording device, 8 is a strobe device, 9 is an exposure device, and 10 is a distance measuring device.

The film identifying means 1 judges the color temperature of the film loaded in the camera, and the color temperature correction information processing section 4
It has a function to output information to.

The color temperature measuring means 2 has a function of measuring the color temperature of the object field and outputting the information to the color temperature correction information processing section 4.

The color temperature manual setting means 3 has a function of outputting the manually input color temperature correction amount to the color temperature correction information processing section 4.

At least one color temperature correction information processing section 4 is provided.
It has a function of receiving one or more pieces of information, performing arithmetic processing on the information, converting it into a predetermined format, and outputting the information to the transmissive color liquid crystal operating means 5, the recording device 7, and the exposure device 9.
Further, the color temperature correction information processing unit 4 inputs manually the color temperature information of the film loaded in the camera from the film identifying unit 1, the color temperature information of the field from the color temperature measuring unit 2, and the color temperature manual setting unit 3. Color temperature correction information, strobe light emission status from the strobe device 8, strobe guide number information, strobe guide number information, aperture value information when the exposure device 9 performs photometry, subject from the distance measuring means 10 Distance information up to is entered.

The transmissive color liquid crystal operating means 5 has a function of outputting a color instruction to the transmissive color liquid crystal 6 based on the information inputted from the color temperature correction information processing section 4.

The transmissive color liquid crystal 6 is arranged on the optical axis and has a function of coloring according to the instruction information input from the transmissive color liquid crystal operating means 5.

The recording device 7 has a function of recording the information of the color temperature when the film surface is exposed at the time of photographing, which is input from the color temperature correction information processing section 4.

The strobe device 8 has a function of outputting information to the color temperature correction information processing section 4 as to whether the strobe light emission state is automatic light emission, forced light emission, or forced stop. It has a function of outputting information to the color temperature correction information processing unit 4 as to whether or not to emit light, and a function of outputting information to the color temperature correction information processing unit 4 as a guide number when the strobe emits light.

The exposure device 9 has a function of outputting the aperture value obtained by photometry to the color temperature correction information processing section 4. Further, it also has a function of determining the exposure in consideration of the exposure multiple information input from the color temperature correction information processing unit 4.

The distance measuring means 10 has a function of outputting distance information to the subject when the distance is measured to the color temperature correction information processing section 4.

Next, the operation of the present invention will be described.

In FIG. 1, when a film is loaded in the camera, the film identifying means 1 is activated to output the color temperature of the loaded film to the color temperature correction information processing section 4. The color temperature correction information processing unit 4 uses the input color temperature as a reference value for correction. When the shutter button (not shown) is pressed and before the film is exposed, if the strobe device 8 outputs that the strobe's light emission state is forcibly stopped or the strobe does not fire due to automatic light emission, the color temperature measuring means 2 displays When the color temperature of the field is measured and the information is used to manually correct the color temperature, the color temperature manual setting means 3 outputs the corrected amount to the color temperature correction information processing section 4. The color temperature correction information processing unit 4 calculates the information input from the color temperature measuring unit 2 and the color temperature manual setting unit 3 by using the color temperature of the film input from the film identifying unit 1 as a reference to calculate the color temperature correction amount. Information is output to the transmissive color liquid crystal operating means 5, while the color temperature information when the film surface is exposed is output to the recording device 7. On the other hand, the exposure multiples when the color temperature is converted are exposed. Output to the device 9. The recording device 7 includes a color temperature correction information processing unit 4
The more input information is recorded in the recording device 7. The transmissive color liquid crystal operating means 5 outputs color instruction information to the transmissive color liquid crystal 6 based on the information input from the color temperature correction information processing section 4. The transmissive color liquid crystal 6 colors in accordance with the instruction information input from the transmissive color liquid crystal operating means 5. The exposure device 9 determines the exposure in consideration of the exposure multiple information input from the color temperature correction information processing unit 4. After the above series of operations, the light passes through the colored transmissive color liquid crystal 6 and is exposed on the film.

Next, when the strobe device 8 outputs when the strobe light emission state is forced light emission or automatic light emission, the color temperature correction information processing unit 4 stops the output to the transmission type color liquid crystal operating means 5. . Therefore, the transmissive color liquid crystal 6 does not operate and remains in the transmissive state. The output from the color temperature correction information processing unit 4 to the transmissive color liquid crystal operating means 5 is stopped because the strobe instantaneously emits light immediately after the shutter is actuated, so that the color temperature of the strobe cannot be measured and the strobe is turned off. This is because accurate color temperature conversion cannot be performed if the transmissive color liquid crystal 6 is operated with the information on the color temperature before the light emission. In this case, the distance measuring means 10
If the input distance to the subject is equal to or close to the effective exposure distance of the strobe obtained from the guide number input from the strobe device 8 and the aperture value input from the exposure device 9, color temperature measurement The recording device 7 records the color temperature of the object field by the strobe light by the means 2 on the film surface. At this time, when the color temperature manual setting means 3 capable of arbitrarily setting the color temperature is operated, the color temperature of the field due to the strobe light is added to the color temperature correction amount from the color temperature manual setting means 3 to obtain a film. The color temperature information when the surface is exposed is recorded on the film surface by the recording device 7. After the above series of operations, the film is exposed.

Further, the distance to the subject input from the distance measuring means 10 is greater than the effective exposure distance of the strobe obtained from the guide number input from the strobe device 8 and the aperture value input from the exposure device 9. When it ’s far,
Since the color temperature of the field is affected more than the strobe light other than the strobe light, the color temperature information when exposing the film surface with the strobe light and the color temperature of the field taken into account is corrected. 4 and the recording device 7 records on the film surface. At this time, when the color temperature manual setting means 3 capable of arbitrarily setting the color temperature is operated, the color temperature is corrected by the color temperature manual setting means 3 in addition to the color temperature in which the strobe light and the color temperature of the field are added. The color temperature correction information processing unit 4 calculates the color temperature information when the film surface is exposed in consideration of the amount, and the recording device 7 records the color temperature information on the film surface. After the above series of operations, the film is exposed.

In FIG. 2, when a film is loaded in the camera, the film identification means 1 is activated to output the color temperature of the loaded film to the color temperature correction information processing section 4, which then controls the film. The color temperature input from the identification means 1 is used as a reference value for correction. When the shutter button (not shown) is pressed and before the film 22 is exposed, if the strobe device 8 outputs the state that the strobe 23 does not emit light by forcibly stopping or automatically emitting light, the strobe device 8 passes through the taking lens system. Part of the incoming light is divided into the color temperature measuring means 2 and the distance measuring means 10, and the color temperature measuring means 2 measures the color temperature of the object field and the information thereof is used as the color temperature manual setting means 3
When the color temperature is manually corrected, outputs the corrected amount to the color temperature correction information processing section 4. The color temperature correction information processing unit 4 uses the color temperature of the film input from the film identifying unit 1 as a reference, and the color temperature information of the object field that has entered through the taking lens system measured by the color temperature measuring unit 2. When,
While the information input from the color temperature manual setting means 3 is calculated and the information of the color temperature correction amount is output to the transmissive color liquid crystal operating means 5, the color temperature information when the film 22 surface is exposed is recorded by the recording device 7. On the other hand, and on the other hand, the exposure multiple at the time of converting the color temperature is output to the exposure device 9. The transmissive color liquid crystal operating means 5 outputs color instruction information to the transmissive color liquid crystal 6 arranged between the mirror 21 and the film 22 based on the information input from the color temperature correction information processing section 4. The transmissive color liquid crystal 6 colors in accordance with the instruction information input from the transmissive color liquid crystal operating means 5. The recording device 7 records the information input from the color temperature correction information processing unit 4 on the surface of the film 22. The exposure device 9 determines the exposure in consideration of the exposure multiple information input from the color temperature correction information processing unit 4. The light that has passed through the taking lens system after the series of operations described above passes through the colored transmissive color liquid crystal 6 and is exposed on the film 22.

Next, when the strobe device 8 outputs when the strobe 23 emits light by forced or automatic emission, the color temperature correction information processing section 4 outputs to the transmissive color liquid crystal operating means 5. Stop. Therefore, the transmissive color liquid crystal 6 does not operate and remains in the transmissive state. The output from the color temperature correction information processing section 4 to the transmissive color liquid crystal operating means 5 is stopped because the strobe instantaneously emits light immediately after the shutter is actuated, so that the color temperature of the strobe cannot be measured and the strobe is turned off. This is because accurate color temperature conversion cannot be performed if the transmissive color liquid crystal 6 is operated with the information on the color temperature before the light emission. In this case, the distance to the subject input from the distance measuring unit 10 is equal to the effective exposure distance of the strobe 23 obtained from the guide number input from the strobe device 8 and the aperture value input from the exposure device 9. Alternatively, when it is close, the color temperature of the object field due to the strobe light coming in through the taking lens system measured by the color temperature measuring means 2 is recorded on the film 22 surface by the recording device 7. At this time, when the color temperature manual setting means 3 capable of arbitrarily setting the color temperature is operated, the color temperature of the field due to the strobe light is added to the color temperature correction amount from the color temperature manual setting means 3 to obtain a film. The recording device 7 records the color temperature information on the surface of the film 22 when the surface of the film 22 is exposed. After the above series of operations, the film 22 is exposed.

Further, the distance to the subject inputted from the distance measuring means 10 is determined from the guide number inputted from the strobe device 8 and the effective exposure distance of the strobe 23 obtained from the aperture value inputted from the exposure device 9. When it is far away, the color temperature of the object field is affected more than the strobe light other than the strobe light, so the color temperature information when exposing the film 22 surface with the strobe light and the color temperature of the object field taken into account It is calculated by the color temperature correction information processing unit 4 and recorded on the surface of the film 22 by the recording device 7. At this time, when the color temperature manual setting means 3 capable of arbitrarily setting the color temperature is operated, the color temperature is corrected by the color temperature manual setting means 3 in addition to the color temperature in which the strobe light and the color temperature of the field are added. The color temperature correction information processing unit 4 calculates the color temperature information when the surface of the film 22 is exposed in consideration of the amount, and the recording device 7 records the information on the surface of the film 22. After the above series of operations, the film 22 is exposed.

Although one embodiment of the present invention has been described above, in addition to this embodiment, for example, a transmissive color liquid crystal 6 is also provided on the optical axis of the finder so that the effect of color temperature conversion can be achieved within the finder. Of the film, the color temperature information when the film 22 surface is exposed, is recorded not on the film 22 surface but on a recording medium different from the film, and the color temperature measuring means 2 is provided with a switch capable of arbitrarily stopping the function. When the black and white film is provided, the function of the color temperature measuring means 2 is stopped, and the transmission type color liquid crystal 6 is colored by the color temperature manual setting means 3 to be used for the purpose of providing contrast. It goes without saying that there are various methods for implementing the above.

[0029]

[Effects of the Invention] The photographer takes time and effort by making full use of the color temperature of the field depending on the shooting conditions such as the illumination light source of the field and the type of film, and a filter for converting the color temperature of the field and the color temperature. You can easily convert even the finest color adjustments without adding the color, and the print operator can easily change the photographer's image based on the information recorded on the film, without requiring advanced technology. You can print a photo that reflects your intentions.

[Brief description of drawings]

FIG. 1 is a configuration diagram of the present invention.

FIG. 2 is a layout of the components of the present invention.

[Explanation of symbols]

 1 film identification means 2 color temperature measuring means 3 color temperature manual setting means 4 color temperature correction information processing unit 5 transmissive color liquid crystal operating means 6 transmissive color liquid crystal 7 recording device 8 strobe device 9 exposure device 10 distance measuring means

Claims (1)

[Claims] 1. A camera having a color temperature conversion function, wherein a transmissive color liquid crystal is used as means for converting the color temperature of a field.