Knowra Autochrome Lumière Autochrome Lumière Autochrome Lumière was an early commercial color-photography process that used dyed potato-starch grains as a color screen on glass plates. Introduced in 1907, it produced positive images with a distinctive soft, grainy appearance.
Additive color : A color reproduction method that combines light from separate colored components to create perceived colors. Autochrome reconstructs color by filtering light through red-orange, green, and blue-violet starch grains.
Louis Lumière : French inventor and industrialist who, with his brother Auguste, developed the cinematograph and the Autochrome process. He co-developed and commercialized the process with his brother.
Albert Kahn : French banker and philanthropist who funded the Archives of the Planet, an international photographic and film documentation project. He commissioned extensive Autochrome photography for his global documentation project.
Kodachrome : A color reversal film introduced commercially in 1935, known for fine detail and rich color. Kodachrome replaced bulky glass Autochrome plates with more portable film and finer image detail.
Potato starch : A carbohydrate extracted from potatoes, composed mainly of the polysaccharides amylose and amylopectin. Tiny dyed grains of potato starch formed the plate's color-filter mosaic.
Auguste Lumière : French inventor and industrialist who, with his brother Louis, developed the cinematograph and the Autochrome process. He co-developed Autochrome as part of the Lumière brothers' photographic research.
Archives of the Planet : A photographic and film archive created by Albert Kahn to document peoples and places worldwide in the early twentieth century. Its thousands of Autochromes made the process a major tool of visual documentation.
Dufaycolor : An additive color-photography process that used a regular mosaic of colored lines on film or plates. Its patterned color screen contrasted with Autochrome's irregular starch-grain mosaic.
Photographic emulsion : A light-sensitive suspension, usually silver-halide crystals in gelatin, applied as a thin layer to a photographic support. A panchromatic silver-halide emulsion recorded the light filtered by the starch screen.
Lumière brothers : French inventors and industrialists Auguste and Louis Lumière, pioneers of photography and early cinema. Their family firm manufactured and marketed Autochrome plates.
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