Keller-dorian cinematography

Keller-Dorian cinematography was an early technique for filming movies in color. It used lenticular film to separate out red, green and blue colors. It was used to film several scenes of Abel Gance's Napoleon (1925-1926) and to film La Femme et le Pantin by Jacques de Baroncelli (1928-1929). However, projection of this process in movie theaters seems to have been more difficult, so neither of these films was ever presented using this technique. Also, making prints was described by one source as "impossible."This process was later used by Kodak for Kodacolor, the first amateur filmmaker's 16mm color process available on the market.

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* [http://www.oldandsold.com/articles21/color-photography-13.shtml A list of various color film processes]