Canon POWERSHOT SX100 IS User Manual page 31

98 I Various Shooting Methods
I Selecting an AF Frame Mode []
[] See Functions Available in Each Shooting Mode (p. 222).
* Cannot be set in [] mode.
The AF frame indicates the area of the composition on which the
camera focuses. You can set the AF frame in the following ways.
F 7
L J
Face
Detect
[] Center
You can have the camera automatically
detect the position of a face and use this data
to set the focus and exposure* while shooting.
In addition, the camera will meter the subject
so that the face is correctly illuminated when
the flash fires. If a face is not detected,
shooting will take place with [Center].
Only
in evaluative
metedng mode (p.
115).
The camera fixes the AF frame at the center.
This is convenient for making sure the focus is
exactly where you want it.