chemicals which react during the developing of
color film to give certain
color dyes. They are called "couplers" because they couple with a chemical in the
developer to
produce the
color you see in the
final image.
Different couplers are used to
produce the
different colors-
red,
green, blue,
yellow, etc. Now
right in the middle of that sentence you'
ve got a
word like "colored couplers."
n. a
reference to tiny particles in
color film which, during development of a
picture,
form colored dyes that make up the
image of the
subject photographed.
Color film is made up of three separate layers, each of which records a
different color of light when exposed, i.e., one records
red, another blue, and the last
green (combinations of which can
produce any other
color). When the
picture is being
developed, the colored couplers in each layer combine with developing chemicals to
produce a
colored dye in exact proportion to the exposed areas in each layer of film. Together these dyes reproduce all the colors one sees in the
final photograph.