Search Result for "focal ratio":
Wordnet 3.0
NOUN (1)
1. the ratio of the focal length to the diameter of a (camera) lens system;
[syn: focal ratio, f number, stop number, speed]
Search Result for "focal ratio":
NOUN (1)
1. the ratio of the focal length to the diameter of a (camera) lens system;
[syn: focal ratio, f number, stop number, speed]
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English definitions, synonyms, pronunciation, spelling with Auto Suggestion and Auto Spell Check technology, Free Dictionary Org.