Chemical process that transforms a latent image into a visible image
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Photographic processing or photographic development is the chemical means by which photographic film or paper is treated after photographic exposure to produce a negative or positive image. Photographic processing transforms the latent image into a visible image, makes this permanent and renders it insensitive to light.[1]
All processes based upon the gelatin silver process are similar, regardless of the film or paper's manufacturer. Exceptional variations include instant films such as those made by Polaroid and thermally developed films. Kodachrome required Kodak's proprietary K-14 process. Kodachrome film production ceased in 2009, and K-14 processing is no longer available as of December 30, 2010.[2] Ilfochrome materials use the dye destruction process. Deliberately using the wrong process for a film is known as cross processing.
^Karlheinz Keller et al. "Photography" in Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim. doi:10.1002/14356007.a20_001
^Matt Warman (December 31, 2010). "Kodachrome film retires, aged 75". London: Telegraph. Archived from the original on January 2, 2011. Retrieved January 2, 2011.
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