Tea Time in Lumière Lumicolor (1937).
In the early 30′s the Lumière brothers adapted the principle of their Autochrome glass plates to film, resulting in Lumière Lumicolor roll film. Later in the decade the process was adapted to motion picture film, but while the microscopic filter screen worked well in large plates and medium format film, it proved too obtrusive for motion picture formats. While not successful as movie film, Lumicolor roll film remained in production until the 1950′s.

Iris and Janet, Bury Knowle, Headington, Oxford, 1914, Ethelreda Laing

Ethelreda Laing’s autochrome of her daughters is an example of early colour photography. The autochrome process used a random mosaic of coloured potato starch grains on a glass plate covered with a photographic emulsion which, when exposed to light and developed, produced a full-colour positive transparency. The process (patented by the Lumière brothers in 1903) continued to be the most popular colour process until the early 1930s.