Autochrome Photography

AUTOCHROME was a photographic transparency film patented in America, June 5,1906, by the french Auguste and Louis Lumiére. Like other techniques of the time, it employed the additive method, recording a scene as separate black and white images representing red, green and blue, and then reconstituting color with the help of filters. To do this on a single plate, the Lumiéres dusted it with millions of microscopic transparent grains of potato starch that they had dyed red (orange), green and blue.