Kodachrome

Kodachrome
Maker	Eastman Kodak
Speed	6/9°, 10/11°, 25/15°, 40/17°, 64/19°, 200/24°
Type	Color slide
Process	K-14 process
Format	16mm, 8mm, Super 8 movie, 35mm movie (exclusively through Technicolor Corp as "Technicolor Monopack"), 35mm still, 120, 110, 126, 828, 4×5, 5x7, 8x10, 11x14, 2.25x3.25, 3.25x4.25, 6.5 cm x 9cm, 9cm x 12cm
Introduced	1935
Discontinued	2002 (ISO 25), 2005 (ISO 40 in 8 mm), 2007 (ISO 200), 2009 (ISO 64)

Kodachrome is a brand name for a non-substantive, color reversal film introduced by Eastman Kodak in 1935. It was one of the first successful color materials and was used for both cinematography and still photography. Because of its complex processing requirements, the film was sold process-paid in the United States until 1954 when a legal ruling prohibited this. Elsewhere, this arrangement continued. For many years it was used for professional color photography, especially for images intended for publication in print media. Because of the growth and popularity of alternative photographic materials, its complex processing requirements, and the widespread transition to digital photography, Kodachrome lost its market share, its manufacturing was discontinued in 2009 and its processing ended in December 2010. After announcing the return of Ektachrome at the beginning of 2017, Kodak Alaris is considering to restart the production of Kodachrome [2]

Kodachrome was the first color film that used a subtractive color method to be successfully mass-marketed. Previous materials, such as and Dufaycolor, had used the additive screenplate methods. Until its discontinuation, Kodachrome was the oldest surviving brand of color film. It was manufactured for 74 years in various formats to suit still and motion picture cameras, including 8 mm, Super 8, 16 mm for movies (exclusively through Eastman Kodak), and 35 mm for movies (exclusively through Technicolor Corp as "Technicolor Monopack") and 35 mm, 120, 110, 126, 828 and large format for still photography.

Kodachrome is appreciated in the archival and professional market for its dark-storage longevity. Because of these qualities, it was used by professional photographers such as Steve McCurry, Peter Guttman and Alex Webb. McCurry used Kodachrome for his 1984 portrait of Sharbat Gula, the "Afghan Girl", for the National Geographic magazine. It was used by Walton Sound and Film Services in the UK in 1953 for the official 16 mm film of the coronation of Elizabeth II of the United Kingdom. Copies of the film for sale to the public were also produced using Kodachrome.

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