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Episode 155 - Foucault, Colour Correction and the Autochrome
b"In the early 1900's, the Autochrome photographic production process utilized an additive colour process on glass plates The Autochrome procedure used coloured potato starch as a grain layer and created fantastic image results that give the impression of being a painting. Aotg.com investigates this early process through a discussion with John Wood, author of The Art of the Autochrome: The Birth of Color Photography."