Canon EOS 5DS (no lens included) 业主指南

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页码 706
f: Selecting the AF OperationN
78
AI Focus AF switches the AF operation from One-Shot AF to AI 
Servo AF automatically if a still subject starts moving.
 
After the subject is focused in One-Shot AF, if the subject starts 
moving, the camera will detect the movement, change the AF 
operation automatically to AI Servo AF, and start tracking the moving 
subject.
While you press the shutter button 
halfway and the camera focuses with AF, 
the <e> icon will appear under the 
focus indicator in the viewfinder.
In One-Shot AF mode, the icon also appears if you press the shutter 
button halfway after focus is achieved.
By default, the AF points light up in red in low-light conditions.
AI Focus AF for Switching the AF Operation Automatically
AF Operation Indicator
AF Points Lighting Up in Red