Meaning Of The Word Relative aperture

Real Dictionary

What's the definition of Relative aperture? Find Relative aperture meanings, definitions and more at the Real Dictionary online.

Relative aperture Meaning

Relative aperture Definition
Relative aperture Definition

What's The Definition Of Relative aperture?

relative aperture in American English
noun: the ratio of the diameter of a lens, esp. a camera lens, to the focal length; the reciprocal of the f number or focal ratio of the lens

relative aperture in British English
noun: the ratio of the equivalent focal length of a lens to the effective aperture of the lens; written as f/n, f:n, or fn, where n is the numerical value of this ratio and is equivalent to the f-number

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