Canon EOS REBEL T8i Advanced User's Manual page 177

: 1-point AF
The camera focuses using a single AF point [
: Zone AF
Focuses in a wide Zone AF frame, which makes it easier to acquire subjects 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 <
].
>.
177