Canon 0304B001 User Manual - Page 86
AF Point Activation Area
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AF Point Activation Area C.Fn-17 C.Fn-17 can be set to expand the AF point's activation area to include the surrounding AF points. (C.Fn-17) (p.167) Set Custom Functions with 3 . • Expanding the activation area to 7 points C.Fn-17-1 (p.167) This larger activation area makes it easier to focus subjects moving erratically. The expanded AF point activation area is not displayed in the viewfinder. When focus is achieved in the One- :Selected AF point :AF points in expanded activation area Shot AF mode, the selected AF point and AF point(s) achieving focus will light. • Expanding the activation area to 7 or 13 AF points automatically C.Fn-17-2 (p.167) As shown below, the AF point activation area expands automatically to suit the lens focal length and AF mode. This is effective when the subject's movement is unpredictable. AF Mode Lens Focal Length Shorter than 200mm 200mm or longer OneShot AF AI Servo AF The AF activation area does not expand automatically. The activation area expands by 1 AF point 86