The Ap-41 process is an obsolete colour reversal process used generally until 1983 for photographic films such as
Agfa CT18. It is significantly different from other colour
reversal processes such as
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 ...
and
Kodachrome
Kodachrome is the brand name for a color reversal film introduced by Eastman Kodak in 1935. It was one of the first successful color materials and was used for both cinematography and still photography. For many years Kodachrome was widely used ...
.
Photographic film processes
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