Editing RGB color model (section)

===Photography===
The first experiments with RGB in early [[color photography]] were made in 1861 by Maxwell himself, and involved the process of combining three color-filtered separate takes.<ref name=":0">{{cite book | title = Exploring Colour Photography: A Complete Guide | author = Robert Hirsch | publisher = Laurence King Publishing | year = 2004 | isbn = 1-85669-420-8 | url = https://books.google.com/books?id=4Gx2WItWGYoC&q=maxwell+additive+color+photograph+register&pg=PA28 }}</ref> To reproduce the color photograph, three matching projections over a screen in a dark room were necessary.

The additive RGB model and variants such as orange–green–violet were also used in the [[Autochrome Lumière]] color plates and other screen-plate technologies such as the [[Joly color screen]] and the [[Paget process]] in the early twentieth century. Color photography by taking three separate plates was used by other pioneers, such as the Russian [[Sergey Prokudin-Gorsky]] in the period 1909 through 1915.<ref Name=loc>[https://www.loc.gov/exhibits/empire/gorskii.html Photographer to the Tsar: Sergei Mikhailovich Prokudin-Gorskii] Library of Congress.</ref> Such methods lasted until about 1960 using the expensive and extremely complex [[Carbon print|tri-color carbro]]<!-- "Carbro" isn't a typo. Please don't replace it with "carbon". --> [[Autotype]] process.<ref>{{cite web|url=http://www.artfacts.org/artinfo/articals/evercolor.html |title=The Evolution of Color Pigment Printing |publisher=Artfacts.org |access-date=2013-04-29}}</ref>

When employed, the reproduction of prints from three-plate photos was done by dyes or pigments using the complementary [[CMYK color model|CMY]] model, by simply using the negative plates of the filtered takes: reverse red gives the cyan plate, and so on.