Subtractive 3 color: pigment process, still photography
“Dufaytissue materials, marketed by Dufay-Chromex Limited of London between 1941 and 1948, resembled Belcolor and were used to produce color prints by contact. After they had been sensitized and dried, the pigment films were exposed by contact ...
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 89.
Louis Dufay, Thomas Thorne Baker and Charles Bonamico (Dufaycolor Ltd., later Dufay-Chromex)
Additive 3 color: Line screen (réseau), 35 mm and 16 mm, reversal and negative-positive stock, still photography and film
Dufaycolor was a regular line screen process whereby the incident light was filtered through a pattern of tiny color patches created by lines in red, green and blue, the so called réseau.
Reversal Colour Positive. Credit: Courtesy of BFI National Archive. Photograph by Barbara Flueckiger. Film: A Colour Box (GB 1935, Len Lye).
Microscopic image of the filter structure of a Dufaycolor film. The Emulsion has been removed. The visible structures are not silver grain but the structure of the filter layers.
Credit: David Pfluger, ERC Advanced Grant FilmColors. Imaging was performed with support of the Center for Microscopy and Image Analysis, University of Zurich.
Microscopic images of Dufaycolor film with the focus set at different points within the emulsion and filter layers. The images have been chained to show a travelling through the 3-dimensional structure of the layers.
Credit: David Pfluger, conversion to video by Martin Weiss, ERC Advanced Grant FilmColors. Imaging was performed with support of the Center for Microscopy and Image Analysis, University of Zurich.
Louis Dufay (Société Anonyme des Plaques et Produits Dufay)
Additive 3 color: regular mosaic screen, combined system, still photography
“In 1907 the French lawyer Louis Dufay (1874-1936) patented a system whose screen pattern was obtained by the combined use of dichromated colloids, greasy printing inks, and imbibition. To take a photograph, the screen was mounted in a metallic ...
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 33.
Coote, Jack H. (1993): The Illustrated History of Colour Photography. Surbiton, Surrey: Fountain Press,
Credit: Cinémathèque française, conservatoire des techniques, Paris.
Source: Ede, François (1994): Jour de fête ou la couleur retrouvée. Cahiers du Cinéma: Paris.
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 71.
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. 31.
Source: Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 48.
Source: Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 69.
Louis Dufay (Société Anonyme des Plaques et Produits Dufay)
Additive 3 color: regular mosaic screen, separate system, still photography
“In 1907 the French lawyer Louis Dufay (1874-1936) patented a system whose screen pattern was obtained by the combined use of dichromated colloids, greasy printing inks, and imbibition. To take a photograph, the screen was mounted in a metallic ...
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 32.
Subtractive 2 color: Separations, multi-layer prints
“Douglass Color No. 2 (1919). The two negatives of the Douglass Color system No. 1 were printed on a positive. In this updated version of the process, rather than projecting the frames through red and green filters, both latent images were ...
“This two-color additive system for color cinematography was invented in 1916 by Leon Forrest Douglass of San Rafael, California. A special beam splitter camera would advance each roll of film two frames per exposure with its double frame pull down ...
Source: Ryan, Roderick T. (1977): A History of Motion Picture Color Technology. London: Focal Press. Credit: Illustration by Sarah Steinbacher, Multimedia & E-Learning-Services, University of Zurich.
Source: Ryan, Roderick T. (1977): A History of Motion Picture Color Technology. London: Focal Press.
Source: Ryan, Roderick T. (1977): A History of Motion Picture Color Technology. London: Focal Press. Credit: Illustration by Sarah Steinbacher, Multimedia & E-Learning-Services, University of Zurich.
Additive two color process: rotating filters and toning
The film is recorded through alternating red and green filters, creating two color separations. After development, the print is placed in two alternating dye-baths, toning the blacks green and the whites red. Additionally, a black-and-white copy is ...
Subtractive 3 color: dye imbibition process, still photography
“In 1942 Defender Photo Supply Company of Rochester, New York, introduced a panchromatic matrix film called Pan-Chroma-Relief Film, which simplified the making of dye imbibition prints from original Kodachrome or Ansco Color transparencies. Up ...
Subtractive 3 color: dye imbibition process, still photography
“In 1939 Thomas S. Curtis (1889–1964) proposed Orthotone, a dye imbibition printing method that was primarily a variation of the widely used Eastman Wash-Off Relief. Orthotone offered its practitioners complete control on the contrast or ...
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 142.
Subtractive 3 color: dye mordanting process, still photography
“In 1939 Thomas S. Curtis of Huntington Park, California, introduced Curtis Neotone, a simple dye mordanting printing method for the production of color prints or transparencies from color separation negatives. With Curtis’s method, a ...
Jack Crawford, Crawford Flexichrome Company (Eastman Kodak Company)
Subtractive 3 color: hybrid dye imbibition process, still photography and film
“In the 1940s a product called Crawford Flexichrome appeared on the market. It allowed photographers to obtain prints or transparencies in full color by simply applying dyes of various colors by hand to a gelatin relief image. Results obtained ...
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 145.
Credit: Illustration by Sarah Steinbacher, Multimedia & E-Learning-Services, University of Zurich. Source: Ryan, Roderick T. (1977): A History of Motion Picture Color Technology. London: Focal Press.
Source: Ryan, Roderick T. (1977): A History of Motion Picture Color Technology. London: Focal Press.
Subtractive 3 color: dye diffusion process, still photography
“Agfa-Gevaert developed its own instant printing materials during the 1980s, Agfachrome-Speed and Copycolor, both introduced commercially in 1983. Agfachrome-Speed was a single-sheet integral print material, whereas Copycolor was a peel-apart. ...
Louis M. Condax, Condax-Speck, Inc., New York, Robert P. Speck
Subtractive 3 color: dye imbibition process, still photography
“Around 1940, Condax-Speck, Inc., of New York started to market dyes and mordant for the Condax-Dytrol system of dye imbibition printing (Fig. 4.19). The system, developed by company owners Louis M. Condax (1897–1971) and Robert P. Speck, ...
Subtractive 3 color: dye imbibition process, still photography
“In 1929 the London firm Colour Snapshots Limited introduced Colorsnap, a printing service based on the dye imbibition process for a tripack roll film called Colorsnap and manufactured by Ilford Ltd. (Monopolies Commission 1966). The tripack ...
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 137.
Subtractive 2 color: Beam-splitter, double-coated film
“The principle of the subtractive colour process was described first by Louis Ducos du Hauron in 1868.
Although eminently suitable for colour motion pictures, the principle could not be applied until means were found of producing several colour ...
“Coloratura. This is the process of Pathé Exchange at Bound Brook, N. J. Negatives are made by the bi-pack method. Prints are made on double-sided film and are dye-toned on one side and metallic-toned on the other. The double-sided film, ...
Additive 3 color: Additive 3 color, still photography
“In a lecture on the theory of three primary colors, given at the Royal Institution of Great Britain on May 17, 1861, Maxwell presented the first demonstration of a photograph in color. According to the records of that meeting (Maxwell, 1890c, ...