Dufaycolor

1933

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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.

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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.

Dufaycolor reversal

1938

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Louis Dufay, T. Thorne Baker and Charles Bonamico (Dufay-Chromex)

Additive 3 color: Line screen (réseau), 16 mm, reversal

(see detail page on Dufaycolor)

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Dufaytissue

1941

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Dufay-Chromex Limited of London

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 ...

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Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 89.

1 Image

Dugromacolor

1952

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Roger Dumas, Georges Grosset and André Marx

Additive 3 color: Beam-splitter, substandard

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Source: Cornwell-Clyne, Adrian (1951): Colour Cinematography. London: Chapman & Hall.

1 Image

Dunning Color

1937

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Carroll H. Dunning

Subtractive 3 color: Beam-splitter, double-coated

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Duplex Screen Plate

1926

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Charles Baker, Wellington and Ward Company

Additive 3 color: regular mosaic screen, still photography

“Paget plates were discontinued in the early 1920s. Apparently production costs had risen to an almost prohibitive amount after World War I due to the difficulties of producing screen plates without defect (Offer 1926). The product reemerged ...

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DuPont Color Film Type 275

1949

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(E.I. Du Pont de Nemours)

Subtractive 3 color: Color release positive stock, multilayer monopack

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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.
Source: Sease, V. B. (1949): DuPont's New Color Film. In:American Cinematographer, 30: 240, 257-258.
Credit: Illustration by Sarah Steinbacher, Multimedia & E-Learning-Services, University of Zurich. Source: Sease, V. B. (1949): DuPont's New Color Film. In:American Cinematographer, 30: 240, 257-258.

8 Images in 1 Gallery

DuPont Stripping Negative

1949

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( E. I. DuPont Company)

Subtractive 3 color: Stripping film

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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.

2 Images

DuPont Vitacolor

1930

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(Max B. DuPont)

Additive 2 color: Rotary filter, 16mm

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Duxochrome / Colorstil / Duxocolor

1929

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Johannes Herzog Company

Subtractive 3 color: pigment process, still photography

“Duxochrome, introduced around 1930 by the Johannes Herzog Company of Bremen, Germany, combined the colored gelatin layers of pigment processes with the tanning development procedure of dye imbibition. Exposures from three separation negatives ...

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Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 106.

1 Image

Dye coupling

1907

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Benno von Homolka (Farbwerke Hoechst)

Subtractive 3 color: Chromogenic monopack

“One of the most elegant solutions to the problem of forming a colored image, lies in the utilization of the products formed by the action of the developer upon the latent image. By this means there is formed a dye image whose intensity follows ...

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Source: Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 161.

1 Image

Dye Imbibition Process

1875

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Ernest Edwards

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Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson.

1 Image

Dymat Process

1973

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(Dymat International Corp.)

Subtractive 3 color: Dye transfer, Super-8

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Dynachrome

1959

Subtractive 3 color: Chromogenic monopack, small gauge, double 8

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Eastman Color

1950

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(Eastman Kodak)

Subtractive 3 color: Chromogenic monopack

“The Eastman Colour Films are multilayer films of the type in which the layers are not separated after exposure. Films of this class are known as Multilayer, Monopack or Integral Tripack. “Multilayer” is descriptive not only of this ...

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Alien (USA 1979, Ridley Scott). Credit: Library of Congress. Photographs of the Eastman Color Print Film from 1979 by Joëlle Kost, ERC Advanced Grant FilmColors.
Photomicrograph of modern chromogenic stock, . Credit: Silvana Konermann.
Eastman Color chromogenic monopack. Source: Craig, G.J. (1953): Eastman Colour Films for Professional Motion Picture Work. In: British Kinematography, 22,5, 1953, pp. 146-158.
Color fading of Eastmancolor stock. Credit: Collection Gert Koshofer, Bergisch Gladbach (Germany). Source: Schultze, Werner (1953): Farbenphotographie und Farbenfilm. Wissenschaftliche Grundlagen und technische Gestaltung. Berlin: Springer.
Color reconstruction by Rudolf Gschwind, University of Basel. Credit: Collection Gert Koshofer, Bergisch Gladbach (Germany).
Color fading of Eastmancolor stock.
Source: Schultze, Werner (1953): Farbenphotographie und Farbenfilm. Wissenschaftliche Grundlagen und technische Gestaltung. Berlin/Göttingen /Heidelberg: Springer-Verlag. Photograph by Martin Weiss, ERC Advanced Grant FilmColors.
Source: Schultze, Werner (1953): Farbenphotographie und Farbenfilm. Wissenschaftliche Grundlagen und technische Gestaltung. Berlin/Göttingen /Heidelberg: Springer-Verlag. Photograph by Martin Weiss, ERC Advanced Grant FilmColors.