Aperture-Priority Ae Mode (Av) - Canon EOS REBEL T8i Advanced User's Manual

Aperture-Priority AE Mode (Av)

In this mode, you set the desired aperture value and the camera sets the shutter speed
automatically to obtain the standard exposure matching the subject brightness. A higher
f/number (smaller aperture hole) will make more of the foreground and background fall
within acceptable focus. On the other hand, a lower f/number (larger aperture hole) will
make less of the foreground and background fall within acceptable focus.
* < > stands for Aperture value (aperture opening).
Blurred background
(With a low aperture f/number: f/5.6)
Sharp foreground and background
(With a high aperture f/number: f/32)
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