- phototechnical film
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фототехническая плёнка
Англо-русский словарь технических терминов. 2005.
Англо-русский словарь технических терминов. 2005.
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… … Wikipedia