In darkroom work, giving additional exposure to a portion of a print made from a negative to add density and tonal information. Often used to balance tones in contrasty scenes. The same term is used in digital darkroom programs.

Darkroom technique used to darken selected areas of a print. Several image-editing programs also include a similar tool to darken pixels.

sometimes called printing-in. A darkroom process in photography that gives additional exposure to part of the image to make that area of the print darker.