Method of and an apparatus for classifying color films

An exposed color film having an exposed zone is provided with color areas prior to developing the same by exposing this unexposed zone to light passing through different narrow-band filters. After developing the film, the transmissivities of each of the color areas within a pair of narrow-band range...

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Bibliographische Detailangaben
Hauptverfasser:	THURM, SIEGFRIED, BUNGE, KONRAD
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	An exposed color film having an exposed zone is provided with color areas prior to developing the same by exposing this unexposed zone to light passing through different narrow-band filters. After developing the film, the transmissivities of each of the color areas within a pair of narrow-band ranges is measured. The measured values are compared with known values for various types of film to establish the type of the particular color film. This information is used to adjust the exposures in the different colors when the images on the color film are copied onto a photographic copying material.