:''See also
Ektachrome
Ektachrome is a brand name owned by Kodak for a range of transparency, still, and motion picture films previously available in many formats, including 35 mm and sheet sizes to 11 × 14 inch size. Ektachrome has a distinctive look that ...
for full details of Kodak E-series processes.''
The E-2 process and E-3 process are outdated processes for developing
Ektachrome
Ektachrome is a brand name owned by Kodak for a range of transparency, still, and motion picture films previously available in many formats, including 35 mm and sheet sizes to 11 × 14 inch size. Ektachrome has a distinctive look that ...
reversal photographic film. The two processes are very similar, and differ depending on the film.
Kodak
The Eastman Kodak Company (referred to simply as Kodak ) is an American public company that produces various products related to its historic basis in analogue photography. The company is headquartered in Rochester, New York, and is incorpor ...
sold kits that could process either kind of film.
Films are processed at 75°F (23.9°C) with a tolerance of only 0.5°F. The steps are:
*First developer. This is a conventional black-and-white developer, and develops as a negative.
*Stop bath
*Hardener
After this, the film is removed from the tank and thoroughly exposed with a bright light (
Photoflood Photoflood lamps are a type of incandescent light bulb designed for use as a continuous light source for photographic
Photography is the art, application, and practice of creating durable images by recording light, either electronically by mea ...
). Replace in tank, though the lid was no longer required.
*Colour developer. This develops the now exposed silver bromide, and at the same time activated the dye couplers
*Stop bath
*Bleach, to remove all the developed silver
*Clear, to remove pink stains left by the colour developer
*Stop bath
Films designed for E-2 and E-3 are prone to fading because of the instability of the color dyes. The processes were phased out in 1974 in favor of
E-4 (which was introduced in 1966), and two years later
E-6 was introduced which remains in use to this day.
External links
Kodak specifications for hand mixing of chemistry
Processing of older Ektachrome films including Process E-3:
Film RescueUSA and Canada
Rocky MountainUSA
Photographic film processes
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