Meaning of gray card



Gray card


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Digital photography

Glossary of photography terms


Meaning and definition of gray card :


A card that reflects a known percentage of the light falling on it. Often has a gray side reflecting 18 percent and a white side reflecting 90 percent of the light. Used to take accurate exposure meter readings (meters base their exposures on a gray tone of 18 percent reflectance) or to provide a known gray tone in color work.


For the term gray card may also exist other definitions and meanings, the meaning and definition indicated above are indicative not be used for medical and legal or special purposes.


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Glossary of photography terms


Gray card


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Meaning and definition of gray card
Gray card