VDict - Definition of f number

English - English (Wordnet) dictionary

f number

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Noun

the ratio of the focal length to the diameter of a (camera) lens system

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Synonyms:
focal ratio stop number speed

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Words contain "f number":
book of numbers f number
Words contain "f number" in its definition in English - English (Wordnet) dictionary:
number baryon number case-fatality proportion frequency check bit parity bit parity plurality myriad fielding average more...

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