Canon PowerShot G15 User Guide - Page 146

Shooting Range and Focusing • If faces are not detected, or when only gray frames are displayed (without a white frame), up to nine green frames are displayed in the areas in focus when you press the shutter button halfway. • If faces are not detected when Servo AF (=150) is set to [On], the AF frame is displayed in the center of the screen when you press the shutter button halfway. • Examples of faces that cannot be detected: - Subjects that are distant or extremely close - Subjects that are dark or light - Faces in profile, at an angle, or partly hidden • The camera may misinterpret non-human subjects as faces. • No AF frames are displayed if the camera cannot focus when you press the shutter button halfway. Still Images FlexiZone/Center One AF frame is displayed. Effective for reliable focusing. With [FlexiZone], you can move and resize the AF frame (=147). • A yellow AF frame is displayed with [ ] if the camera cannot focus when you press the shutter button halfway. Note that AFpoint zooming (=87) is not possible. • To compose shots so that subjects are positioned at the edge or in a corner, first aim the camera to capture the subject in an AF frame, and then hold the shutter button halfway down. As you continue to hold the shutter button halfway, recompose the shot as desired, and then press the shutter button all the way down (Focus Lock). 146