Canon EOS 90D DSLR Camera with 18-135mm Lens - Manual (Page 141)

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Selecting the AF Method (Live View Shooting)
3 Focus and take the picture.
 Aim the AF point over the subject and
press the shutter button halfway.
When focus is achieved, the AF point
will turn green and the beeper will
sound.
If focus is not achieved, the AF point will
turn orange.
o AF points may not track subjects under some shooting conditions when Servo
AF is used with Zone AF.
o Focusing may be diffi cult when using a peripheral AF point. In this case, select
an AF point in the center.
o With [
8
C.Fn II-10: Orientation linked AF point] , you can set separate AF
points for vertical and horizontal shooting ( = 565).