Canon PowerShot A810 User Manual page 94

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 (p. 97) 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.
A4000 IS A2400 IS
Center
One AF frame is displayed in the center. Effective for reliable focusing.
A3400 IS
Fixed Frame
One AF frame is displayed. Effective for reliable focusing.
• A yellow AF frame is displayed with
when you press the shutter button halfway. Note that AF-point
zooming (p. 102) is not possible.
94
A2300 A1300 A810
Still Images
Still Images
if the camera cannot focus
Movies
Movies