Term: Gray card

Note:
 “Search Glossary” button searches only the glossary. Temporary note: search not enabled for two- and three-character terms; browse by alphabet.
 “Search“ button at the top right of the page searches the Web site, not the glossary.

Suggest a term

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Term: Gray card

Definition:

A gray card is used as a reference point for assisting to determine the exposure of objects in reflected light. Gray cards normally reflect 18% of the light falling on them. Ideally, gray cards are designed to be spectrally neutral and produce a diffuse reflection. Often times the alternate side of a gray card will be white, reflecting 90% of the light falling on it.

Category:

Image

See also: