Canon PowerShot SD870IS User Manual page 103

I
Various Shooting Methods _ 101
Shooting with the AF Lock
The AF lock can be used in the r_, [_, [], [] or [] mode.
To Release the AF Lock
Press the _/_, button.
_] • When shooting with the focus lock or AF lock using the LCD
monitor, setting [AF Frame] to [Center] (p. 97) makes
shooting easier since the camera focuses using the center
AF frame only.
• The AF lock is convenient because you can let go of the
shutter button to compose the image. Moreover, the AF lock
is still effective after the picture is taken, allowing you to
capture a second image with the same focus.
• The AF frame will not appear in movie mode.