the C-41 developing process
The C-41 is a photographic process that develops color negative film (i.e
what you usually buy when you buy film). The result of this process is that the film is resistant to light, and
it can be printed onto photographic paper.
The process involves a series of baths (First Development, Stop, Fix, Bleach,
Colour Development, Bleach and Fix bath) , designed to "burn" the
grain to the film (developing), and to make sure the film doesn't react to light
The resulting negative has an orange mask (that is why processed C-41 film looks
orange), which makes it easier for the printing machines to copy from the negative
to the paper.
There is no difference in process whether the film to be developed is 135
(35mm), 110 or APS film