key light

noun

key light

noun

1

Arts, Broadcasting, Film, Hobbies, Lifestyle, Media, Photography, Television The most important light, used to highlight the form and dimension of the subject.

Age lines were drawn on McCarthy's face in red makeup, and when key lights with red filters were used, the lines were not visible.2015, Don Presnell, Marty McGee, A Critical History of Television's The Twilight Zone, 1959-1964, page 57:

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