G - Physics – 03 – B
Patent
G - Physics
03
B
96/235, 95/3
G03B 27/32 (2006.01) G03B 27/52 (2006.01) G03B 27/73 (2006.01)
Patent
CA 1070547
ABSTRACT OF THE DISCLOSURE A photographed and developed panchromatic negative film is mounted on an enlarger. White light will, after passing through this panchromatic negative film, be mised up uniformly in a diffuser. This mixed-up light will print on panchromatic paper each colored image of cyan, magenta and yellow through each color filter in a fixed grade density of red, green and blue-violet. Of these printed images the differences between an image at the least visible section and other images will be indicated as an unbalance in the three primary colors. Then, a color filter for color correction corresponding to this unbalance will be selected. Next, removing the diffuser from the enlarger, alternatively the selected color correction filter will be mounted thereon. Again, when a panchromatic negative film is printed on pan- chromatic paper, a postive picture that will balance in the three primary colors can be obtained.
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