CBSE BOARD X, asked by kajal8740, 1 year ago

what is meant by the speed of a photography film

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Answered by adarsht0002

0

Film speed is the measure of a photographic film's sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system. A closely related ISO system is used to describe the relationship between exposure and output image lightness in digital cameras.

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