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Photo Studio and Photo Equipment Terms - G

Photo Studio and Photo Equipment Terms - G

Grey Card

A gray card is a middle gray reference, typically used together with a reflective light meter, as a way to produce consistent image exposure and/or color in film and photography.
(source: http://en.wikipedia.org/wiki/Grey_card)

Guide Number

The guide number for an electronic flash measures its ability to illuminate the subject to be photographed at a specific film or sensor sensitivity and angle of view. A higher guide number indicates a more powerful flash.
(Source: http://en.wikipedia.org/wiki/Guide_Number)


Derived from "Go Between" or "Goes Before Optics" is a physical template slotted inside, or placed in front of, a lighting source, used to control the shape of emitted light.
(Source: http://en.wikipedia.org/wiki/Gobo_%28lighting%29). Gobos are used with Optical Snoots

Gold brolly

Light modifier of gold color. Used in portrait and product photographies to give a warm tone to the picture.



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