Black level

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Video black level is defined as the level of brightness at the darkest (black) part of a visual image or the level of [brightness] at which no light is emitted from a screen, resulting in a pure black screen.

Video displays generally need to be calibrated so that the displayed black is true to the black information in the [video] signal. If the black level is not correctly adjusted visual information in a video signal could be displayed as black, or black information could be displayed as above black information (gray).

See also Pluge.

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