[ ef-sis-tuhm ]

nounOptics, Photography.
  1. a system that indicates the relative aperture of a camera lens based on the f-number.

Words Nearby f-system

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use f-system in a sentence

  • They work at an aperture of f/18, but I understand that they can be opened to f/16 and numbered on the f system.