- See also Ektachrome for full details of Kodak E-series processes.
The E-3 process is a now outdated process for developing color reversal (transparency) photographic film, which was invented in the early 1950s.
The E-3 process was run at near room temperature (24°C/75°F) and requires a manual reexposure of the film in order to affect color development. Often, still photographers would accomplish this by use of a strobe unit in the darkroom. The process took approximately one hour.
Processing of older Ektachrome films including Process E-3 :
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