Meaning Of The Word F-number
What's the definition of F-number? Find F-number meanings, definitions and more at the Real Dictionary online.
F-number Meaning
| F-number Definition |
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What's The Definition Of F-number?
f-number in American English
a number that represents the relative aperture of a lens, equal to the focal length divided by the effective diameter of the lens aperture: a higher number indicates a smaller opening noun: a number corresponding to the ratio of the focal length to the diameter of a lens system, esp. a camera lens. In f/1.4, 1.4 is the f-number and signifies that the focal length of the lens is 1.4 times as great as the diameter |
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