Definition of auto focus in English English dictionary
An electronic and mechanical process that automatically focuses the lens on whatever the camera is pointed at Measured in feet or metres
A feature on a digital camera that selects the main subject in the frame and balances focus to make details of the image crisp by automatically focusing the camera lens
System by which the camera lens automatically focuses the image of a selected part of the picture subject
Autofocus (or AF) is a feature of some optical systems that allows them to obtain (and in some systems to also continuously maintain) correct focus on a subject, instead of requiring the operator to adjust focus manually