Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Dufaycolor is an early French and British additive colour photographic film process for motion pictures and stills photography. It was based on a four- colour screen photographic process invented in 1908 by Frenchman Louis Dufay. Dufaycolor worked on the same principles as the Autochrome process, but achieved its result using a slightly different method.

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