Canon A650 IS - Manual (Page 97)

Various Shooting Methods 95
Changing the AF Frame Size ([Center] or [Flexi-
Zone])
You can change the AF frame size to match the size of a subject.
You reduce the area used to set the focus when you reduce the AF
frame to match a small subject or to focus on a particular portion of a
subject.
1
Select [AF Frame Size].
1. Press the button.
2. In the menu, use the or
button to select [AF Frame
Size].
2
Accept the setting.
1. Use the or button to select
[Normal] or [Small].
2. Press the button.
The setting changes to [Normal] when the digital zoom,
digital tele-converter or
(p. 99) is used.