Canon POWERSHOT D20 User Manual page 9

Shooting Range and Focusing
(_ Focusing may not be possible in some shooting conditions.
BnIowqight conditions, Servo AF may not be activated (AF frames
may not turn blue) when you press the shutter button halfway. Bn this
case, the focus and exposure are set according to the specified AF
frame mode.
Bfadequate exposure cannot be obtained, shutter speeds and
aperture values are displayed in orange. Release the shutter button,
and then press it halfway again.
AF lock shooting is not available.
[AF-Point Zoom] on the _ tab is not available.
Not available when using the self-timer (p. 63).
The focus can be Iocked. After you lock the focus, the focal position will not
change even when you release your finger from the shutter button.
Lock the focus.
With the shutter button pressed halfway,
press the 4 button.
The focus is now locked, and
AFh
is
displayed.
To unlock the focus, release the shutter
button and press the 4 button again. In this
case,
AFL
is no longer displayed.
Compose the shot and shoot.
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