a device that focuses a lens, camera, etc. automatically
: also written auto focus, ˌauˈto-focus
autofocus in American English
(ˈɔtouˌfoukəs)
adjective
1.
having the ability to focus automatically
an autofocus lens
an autofocus camera
noun
2.
such an ability
Also: auto-focus
Word origin
[1955–60; auto-3 + focus]This word is first recorded in the period 1955–60. Other words that entered Englishat around the same time include: cassette, geodesic dome, life-support, opioid, softwareauto- is a combining form representing automatic in compound words (autoalarm; autofeed; autofocus). It is sometimes also taken as an adjective (auto enlarger; auto stop control)
Examples of 'autofocus' in a sentence
autofocus
Turn the autofocus off and set the focus to 'infinity'.
The Sun (2012)
Autofocus has been accused of knowingly providing dishonest evidence used in court.
Times, Sunday Times (2012)
The face-detection system worked quickly and its autofocus was fast and effective.
Times, Sunday Times (2007)
But the autofocus is slow compared with others on test here.
Times, Sunday Times (2008)
The autofocus can also become confused, picking out the wrong subject.
Times, Sunday Times (2010)
The 13-megapixel camera has a headline-grabbing feature - laser-guided autofocus.
The Sun (2014)
All have a 23 megapixel camera and the fastest autofocus available at 0.03 seconds.
The Sun (2015)
This snapper features high-speed autofocus and can be remotely controlled with a smartphone.