Pentax Optio W90 Operating Manual page 94

3
Press the 4 button.
The shooting mode is selected and the
camera returns to capture mode.
When the camera detects a person's
face, the Face Detection function is
activated and the face detection frame
appears (p.81).
4
Press the shutter release button halfway.
The focus frame on the display turns green when the camera focuses
3
on the subject at the correct distance.
5
Press the shutter release button fully.
The picture is taken.
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