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A subtractive
color process called kodachrome made color
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photography practical.
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It was
perfected by Leopold Mannes (1899-1964) and Leopold
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Godowsky
(1900-1983), two musicians and amateur
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photographic
researchers.
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Their
collaboration with Eastman Kodak scientists led to the
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introduction
of Kodachrome in 1935. Kodachrome was a single
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sheet of film
coated with three layers of emulsion, each
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sensitive to
one primary color (red, green and blue). A single
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exposure
produced a color image.
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