f-number

English

Noun

f-number (plural f-numbers)

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

   Synonym: f-value

Translations

ratio of the focal length of a lens to its diameter

• Finnish: aukkosuhde, aukko (fi)
• Hungarian: fényerő (hu)
• Maori: waepuare

See also

• f-stop