Dictionary.com
definitions

automatic focus

noun

  1. a system in a camera which automatically adjusts the lens so that the object being photographed is in focus, often one using infrared light to estimate the distance of the object from the camera
  2. (as modifier)automatic-focus lens
Abbreviation: AF Also called: autofocus

RELATED CONTENT

nubilous
Read more in this article about some frequently asked questions and fun facts related to our definitions.
READ MORE
arctophile
Read more in this article about some frequently asked questions and fun facts related to our definitions.
READ MORE
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012