Method of and apparatus for printing color photograph as well as color filter for use in the same apparatus

摘要

A color photographic printing method of printing a film on the basis of the printing condition of a reference film type, comprises comparing the film characteristic of the reference film type with the film characteristic of the type of a film to be printed and correcting the printing condition of the reference film type on the basis of the result of this comparison. Accordingly, the proper printing condition of each type of film to be printed can be obtained from the printing condition of a single reference film type. A color photographic printing apparatus has a light source section for separating white light into red light, green light and blue light by a combination of a color glass and color separation filters of red, green and blue each provided with a dielectric multilayer film to project the light of each color onto a color film and a light measuring device for measuring red light, green light and blue light transmitted through the color film so that the amount of exposure is controlled on the basis of a predetermined reference printing condition and a measurement value provided by the light measuring device. The color separation filters are each constituted by the dielectric multilayer film and a filter member disposed in close contact with the coating of the dielectric multilayer film, it is possible to prevent variations in the spectral characteristic due to temperature changes.