safelight(redirected from safelights)
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A lamp having one or more color filters allowing moderate darkroom illumination without affecting photosensitive film or paper.
(Photography) photog a light that can be used in a room in which photographic material is handled, transmitting only those colours to which a particular type of film, plate, or paper is relatively insensitive
a darkroom light with a filter that transmits only those rays of the spectrum to which films, printing paper, etc., are not sensitive.