The first subtractive 2 color process introduced by Technicolor captured the incoming light through a beam splitter with red and green filters also. However, in contrast to the first Technicolor process, the two b/w images were recorded on one negative strip. This was achieved by the pull-down of two frames simultaneously, a process that required the double speed in the camera. These two frames were arranged in pairs, whereby the green record was inverted up-side down (see image).
Source: Ryan, Roderick T. (1977): A History of Motion Picture Color Technology. London: Focal Press.
Polychromide samples from the Kodak Film Samples Collection at the National Science and Media Museum in Bradford.
Credit: National Science and Media Museum Bradford.
Photographs by Barbara Flueckiger in collaboration with Noemi Daugaard.
The two colors visible at a splice. Credit: EYE Film Institute Amsterdam. Film: [Kleurenpracht].
Credit: Cinémathèque française, conservatoire des techniques, Paris.
Source: Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 103.
Russian Ideas in Clothes! (USA 1922). Credit: UCLA Film & Television Archive. Photographs of the nitrate print by Barbara Flueckiger.
Credit: Cinémathèque française, conservatoire des techniques, Paris.
The Phantom of the Opera (USA 1925, Rupert Julian). Credit: UCLA Film & Television Archive. Photographs of the nitrate print by Barbara Flueckiger.
Credit: George Eastman House Motion Picture Department Collection. Film: The Old Family Toothbrush (USA 1925).
Source: Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 73.
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 135.
Source: Klein, Adrian Bernhard (Cornwell-Clyne) (1940): Colour Cinematography. Boston: American Photographic Pub. Co.
Magnification 20x. Credit: photomicrograph by Silvana Konermann. Source: Eggert, John (1932): Kurzer Überblick über den Stand der Farbenkinematographie. Bericht über den VIII. Internationalen Kongress für wissenschaftliche und angewandte Photographie, Dresden 1931, pp. 214-222. Leipzig: J. A. Barth.
Credit: Gert Koshofer Collection. Photograph by Barbara Flueckiger.