Autochrome Lumière
DISCOVERY: The autochrome process was discovered by the brothers Auguste and Louis Lumiere of Lyons in France. It was patented in 1904; 1906 in the USA. The process was made commercially available from 1907 until about 1940.
PROCESS:The slide was exposed in the camera, with the emulsion side furthest from the lens, so that the light had to pass through the starch before reaching the film. [The starch acted as a filter and so recorded the intensity of light in each of the three colours.
The plate was then processed in the darkroom to produce a slide with a positive image (i.e. developed, washed, bleached, exposed, re-developed, washed and fixed).
RESULTS: The autochrome process produced a coloured transparency on glass, with luminous colours.
It can be viewed by holding the slide up to the light or by projecting its image onto a screen.
The grains of starch gave autochromes a pointillist appearance.
DISCOVERY: The autochrome process was discovered by the brothers Auguste and Louis Lumiere of Lyons in France. It was patented in 1904; 1906 in the USA. The process was made commercially available from 1907 until about 1940.
PROCESS:The slide was exposed in the camera, with the emulsion side furthest from the lens, so that the light had to pass through the starch before reaching the film. [The starch acted as a filter and so recorded the intensity of light in each of the three colours.
The plate was then processed in the darkroom to produce a slide with a positive image (i.e. developed, washed, bleached, exposed, re-developed, washed and fixed).
RESULTS: The autochrome process produced a coloured transparency on glass, with luminous colours.
It can be viewed by holding the slide up to the light or by projecting its image onto a screen.
The grains of starch gave autochromes a pointillist appearance.