- the sensitivity to light of a photographic film, specified in terms of the film's ISO rating
- the rate at which the film passes through a motion picture camera or projector
单词 | film speed |
释义 | WordReference Random House Unabridged Dictionary of American English © 2024 film′ speed′, [Photog.]
Collins Concise English Dictionary © HarperCollins Publishers:: film speed n
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