FILMSPEED
Film speed
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 measure the sensitivity of digital imaging systems.The above text is a snippet from Wikipedia: Film speed
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film speed
Noun
- A measure of a film's sensitivity to light; faster films needing shorter exposures
The above text is a snippet from Wiktionary: film speed
and as such is available under the Creative Commons Attribution/Share-Alike License.