Canon PowerShot G9 - Manual (Page 120)

Advanced Shooting Functions 118
z [Face Detect] cannot be used when the LCD monitor is
turned off.
z You can switch between the AF Frame modes, pressing the
button followed by pressing the MENU button or the
button. Pressing the button again completes the setting.
z If the white frame fails to appear and only gray frames
appear, or if a face is not detected, you can change the
focusing method (p. 115) as follows.
- [Single]: The camera selects automatically one frame out of
9 AF frames and focuses.
- [Continuous]: The camera focuses on the subject in the
center AF frame.
z The camera may mistakenly identify non-human subjects as
a face.
z In certain cases, faces may not be detected.
Examples:
- Faces near the screen edges or faces that appear
extremely small, large, dark or bright in relation to the
overall image.
- Faces turned to the side or at a diagonal, or faces with a
portion hidden.