JP2946332B2 - How to make standard color photos - Google Patents

Description

The present invention relates to a method for producing a standard color photograph in a color photograph.

(B) Conventional technology In mechanical printing, which is usually performed at present, each subject image of a photographic film is printed with color correction for each frame.

Also, the illumination light from the imaging light source was recorded on a part of the film separately from the subject at the time of shooting, and the printing device was adjusted so that the illumination light recording part became neutral gray on color paper at the time of printing (Japanese Patent No. 1247025).

(C) Problems to be Solved by the Invention With the above-mentioned normal mechanical baking method, color feria cannot be avoided, and correct color cannot be reproduced even if correct shooting is performed. There is a problem that is. Also, in Japanese Patent No. 1247025, it is necessary to use a diffuser in front of the lens at each shooting site to record the shooting light source, which is troublesome, and troubles due to incorrect illumination light recording are unavoidable, Cannot print automatically. In addition, it is difficult to implement the method of recording illumination light into a camera, and even if it can be implemented, there is a drawback that a conventional camera cannot be used. The present invention eliminates the above drawbacks, and provides a method for producing a color photograph that can be easily and reliably obtained as a standard print (correct color reproduction print without color feria) regardless of whether it is machine-baked or hand-baked by ordinary photographing with a normal camera. The purpose is.

(D) Means for Solving the Problems In the present invention, the reference light having the same color quality as the photographing light source is given to the color film before the development of the color film. That is, a proper exposure is given with light that is close to the photographing light, such as a color temperature of 5500K in daylight / strobe photographing and 3100K in tungsten photographing. Or for daylight, which gives each reference light according to the shooting purpose at the time of film production,
Conventional types for tungsten, fluorescent lamps, and those that do not provide reference light can be selected and used as universal types.

(E) Function When taking a picture, select a film as described above or take a picture, or perform normal development after exposing the reference light according to the photographic light source. The exposed part also produces a developed negative.

Therefore, when printing, the reference exposure area is colorless on a color print (the reflection density is about 0.5-0.
When the subject image is printed under the conditions described in 7), the print is performed based on the same light as the shooting light source, so that a normal standard print without color deviation can be obtained. Color can be developed normally.

Further, since the tungsten light is printed based on the tungsten light and the fluorescent light is also printed based on the reference light similar to that of the fluorescent lamp, normal color reproduction printing can be performed with various light sources.

(F) Embodiment FIG. 1 shows a state in which a reference exposure is given between a leader portion of a color film and the first photographing screen. 1
Denotes a leader portion of a color film, 2 denotes a reference exposure portion, 3 denotes a first photographing screen, and 4 denotes a punching portion for determining the type of the film and the reference light.

In the current automatic film winding camera, the portion where data can be input has a width of about 9 cm shown between AB in FIG. 1, so that the present invention can be easily implemented and there is no hindrance to ordinary photographing print work. Not cause.

When the developed film is processed by an auto printer, the type of film, emulsion number, and reference light type are input from the punching section, and the portion is determined based on the data obtained by reading the color density of the reference exposure section. Under the filter conditions adjusted to be colorless on the color paper (that is, the exposure amount is corrected for each screen but the color is not corrected), three or less subject images are printed. In addition,
The punching unit may be a barcode printing system. In addition, the same principle is applied to a rush print auto printer for producing slides.

For films that have not been given a reference light during manufacture,
The film can be formatted using a reference light exposure device such as the one shown in the figure. In this device, the light color of the light source 1
K, 3100K, fluorescent color, and other reference colors can be converted, and the reflected light from 3 illuminates the 4 mixing boxes, so that the camera 6 can properly expose the film with the reference light.

In the case of strict use, the color quality of the reference light can be finely converted according to the color temperature and chromaticity of the photographing light source, so that more strict color reproduction is possible.

In the case where the input is made in advance at the time of manufacturing, the phenomenon of latent image regression causes a problem. However, the problem can be solved by correcting the print data based on the data input to the punching section or the barcode section.

(G) Effects of the Invention As described above, in the present invention, the color film is exposed to the reference light having the same color quality as the photographic light source, and the color balance is adjusted in the print so that the exposed portion of the reference light becomes colorless. It is. Therefore, simply instruct the light source that was shot at the time of development request after shooting normally with a normal camera, or simply shoot with the light source specified on the film, the neutral gray of the subject image is reproduced as gray and there is no standard color Color prints are definitely obtained. In other words, if you take the right shots, you can always get the right prints,
Since the printing standard is clear even in reprinting, the same result is always obtained from the same negative, and an unprecedented effect of normally using the filter use effect and the evening scene effect, which was difficult in the past, can be provided.

In particular, after normal shooting, the method of formatting and developing with a reference exposure device at the time of requesting development, the user can make standard color photos simply by telling the type of shooting light source at the time of requesting development, In addition, there is an effect that the quality of color prints and color slides can be greatly improved easily and inexpensively only by performing the exposure operation of the reference light in the developing lab.

At this time, if the same control as the AE exposure of the camera is added with respect to the image density, it is possible to remedy a failure due to a variation in exposure at the time of shooting.

According to the present invention, color control at the time of printing is performed by the reference light portion. In other words, in principle, manual control for each subject image is not necessary, so set the reference exposure unit on the printer and press the button (after controlling and fixing the filter), replace it with the negative you want to print and press the number button. A self-printer that can perform normal printing with a simple operation and has been difficult to implement conventionally can be realized.

In any case, the standard method cannot obtain a standard print by the conventional method. However, the present invention makes it possible to easily perform the full automation, improve the quality of the color print, save labor, and contribute to the entire color culture. The effect is not measurable.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a film in which a punching portion and a reference exposure portion are provided on a color film, wherein 1 is a leader portion, 2 is a reference exposure portion, 3 is the first photographing screen, 4 is a punching portion, and A And B represent the range in which the reference exposure can be printed. FIG. 2 shows an embodiment of a reference light exposure apparatus, wherein 1 is a light source, 2 is a conversion filter section, 3 is a reflection plate, 4 is a mixing box section, 5 is a diffusion plate, and 6 is a reference light exposure camera. It represents.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 27/00-27/80

Claims (1)

(57) [Claims] At the time of producing a film or photographing a subject and before developing, between a leader portion of a color film and a photographing screen, there is a light source for daylight, a tungsten lamp, a fluorescent lamp and a photographing light source. Production of standard color photographs, in which the subject is printed under the appropriate conditions by properly exposing the reference light of color temperature and chromaticity and adjusting the printing device so that the reference exposure part becomes colorless on color paper during printing. Law.