It used a subtractive 3-color process on a single film strip, one of the earliest to do so.
This subtractive process is a necessity in any case.
But in a subtractive process, you don't, and we didn't.
Mixing pigments physically is a subtractive process with cyan, magenta, and yellow being the primary colors.
As machining is a subtractive process, the time to remove the material is a major factor in determining the machining cost.
But the subtractive process had all but disappeared in the government until we restored it.
Pigment mixing is a subtractive process, color experts explain.
It is a subtractive process; starting with a solid block, the sculptor removes material using chisels and other tools to 'reveal' the finished form.
It was a subtractive process, using cyan, magenta, and yellow primaries.
By contrast, depletion gilding is a subtractive process whereby material is removed to increase the purity of gold that is already present on an object's surface.