Canon PowerShot SX500 IS User Guide - Page 107

Shooting Range and Focusing • If faces are not detected, or when only gray frames are displayed (without a white frame), an AF frame is displayed in the center of the screen when you press the shutter button halfway. • If faces are not detected when Servo AF (=109) 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 Choosing Subjects to Focus On (Tracking AF) Shoot after choosing a subject to focus on as follows. 1 Choose [Tracking AF]. zzFollow the steps on =105 to choose [Tracking AF]. XX[ ] is displayed in the center of the screen. 2 Choose a subject to focus on. zzAim the camera so that [ ] is on the desired subject, and then press the button. 107