1903 | Europe - France![]() Unidentified photographer / artist, n.d., Microphotography of the Autochrome trichromatic selection mosaic, made of dyed potato starch grains (7000 grains / mm2), Photomicrograph, Institut Lumičre (The Lumiere Institute), | The Autochrome is patented by the Lumière Brothers and when marketed in 1907 it becomes the first widely used color process. |