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What is autochrome photography?
What replaced autochrome?
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Who invented colour film or autochrome?
Autochrome Lumière
The Autochrome Lumière was an early color photography process patented in 1903 by the Lumière brothers in France and first marketed in 1907. Autochrome was an additive color "mosaic screen plate" process. Wikipedia
a plate for additive color photography that uses a layer of minute grains of starch dyed red, green, and blue coated with a panchromatic emulsion.