Canon EOS 90D DSLR Camera with 18-135mm Lens - Manual (Page 136)

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Selecting the AF Method (Live View Shooting)
: Zone AF
Uses auto selection AF in Zone AF frames
to cover a large area, which makes
focusing easier than with 1-point AF.
Prioritizes focusing on the nearest subject. Faces of any people in the Zone
AF frame are also given priority in focusing.
AF points in focus are displayed with <
S
>.