f-number

Fetched 2026-10-26 (cache).

Synonyms: f, y, af, h, a, w, of, c, g, x, cf

Antonyms: f, y, af, h, a, w, of, c, g, x, cf

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|photography}} The [[ratio]] of the [[focal length]] of a [[lens]] to its [[diameter]]; a [[measure]] of the [[light]]-[[gathering]] ability of the lens.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.