A color head is an option for an
enlarger
An enlarger is a specialized transparency projector used to produce photographic prints from film or glass negatives, or from transparencies.
Construction
All enlargers consist of a light source, normally an incandescent light bulb shining th ...
in the
darkroom.
With a color head the light in the enlarger can be adjusted for color neutral results.
Therefore there are three adjustable
dichroic filter
A dichroic filter, thin-film filter, or interference filter is a color filter used to selectively pass light of a small range of colors while reflecting other colors. By comparison, dichroic mirrors and dichroic reflectors tend to be characteri ...
s - yellow, cyan and magenta inside who allow to change the color of the light source.
References
{{Photography-stub
Photography equipment