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FOCAL RATIO
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| IPA (US): |  |
Dictionary entry overview: What does focal ratio mean?
• FOCAL RATIO (noun)
The noun FOCAL RATIO has 1 sense:
1. the ratio of the focal length to the diameter of a (camera) lens system
Familiarity information: FOCAL RATIO used as a noun is very rare.
Dictionary entry details
Sense 1
Meaning:
The ratio of the focal length to the diameter of a (camera) lens system
Classified under:
Nouns denoting relations between people or things or ideas
Synonyms:
f number; focal ratio; speed; stop number
Hypernyms ("focal ratio" is a kind of...):
ratio (the relative magnitudes of two quantities (usually expressed as a quotient))
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