Editing Photographic processing (section)

{{Short description|Chemical process that transforms a latent image into a visible image}}
{{redirect|Light room|the photo editing software|Adobe Lightroom}}
'''Photographic processing''' or '''photographic development''' is the chemical means by which [[photographic film]] or [[photographic paper|paper]] is treated after [[photographic exposure]] to produce a [[Negative (photography)|negative]] or [[Positive (photography)|positive]] [[image]]. Photographic processing transforms the [[latent image]] into a visible image, makes this permanent and renders it insensitive to light.<ref name=Ullmann>Karlheinz Keller et al. "Photography" in Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim. {{doi| 10.1002/14356007.a20_001}}</ref>

All processes based upon the [[gelatin silver process]] are similar, regardless of the film or paper's manufacturer. Exceptional variations include [[instant film]]s such as those made by [[Polaroid Corporation|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.<ref>{{Cite news|url=https://www.telegraph.co.uk/technology/news/8232084/Kodachrome-film-retires-aged-75.html|title=Kodachrome film retires, aged 75|author=Matt Warman|publisher=Telegraph|access-date=January 2, 2011|location=London|date=December 31, 2010|archive-date=January 2, 2011|archive-url=https://web.archive.org/web/20110102174436/http://www.telegraph.co.uk/technology/news/8232084/Kodachrome-film-retires-aged-75.html|url-status=live}}</ref> [[Ilfochrome]] materials use the [[dye destruction]] process. Deliberately using the wrong process for a film is known as [[cross processing]].