Autofocus meaning
To focus automatically.
My camera makes a funny sound when it autofocuses.
The camera was autofocused before the picture was taken.
verb
A device that focuses a lens, camera, etc. automatically.
noun
A feature of all digital cameras that automatically aligns the lens to make the subject in the image sharp (in focus). Pressing the shutter button halfway down generally displays a rectangle in the viewing screen indicating where the camera has identified the subject. See focal length.
(electronics) A feature of some cameras and other optical systems that allows a correct focus on the subject to be obtained automatically.
This camera has autofocus, so it's more expensive.
noun
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Origin of autofocus
auto- + focus