Dictionary

Explore meaning, context, and usage with an online dictionary experience optimized for multilingual workflows.

Try these words

Meaning of f-number

Source language: EnglishDictionary language: English

f-number

noun

Definitions

The ratio of the focal length of a lens to its diameter; a measure of the light-gathering ability of the lens.

Sources:https://en.wiktionary.org/wiki/f-number