Canon T5I 用户指南

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页码 388
301
3
 Custom Function SettingsN
C.Fn IV: Operation/Others
C.Fn-6
Shutter/AE lock button
0: AF/AE lock
1: AE lock/AF
This is convenient when you want to focus and meter separately. Press 
the <A> button to autofocus, and press the shutter button halfway to 
apply AE lock.
2: AF/AF lock, no AE lock
In the AI Servo AF operation, you can press the <A> button to stop the 
AF operation momentarily. This prevents the AF from being thrown off by 
any obstacle passing between the camera and subject. The exposure is 
set at the moment the picture is taken.
3: AE/AF, no AE lock
This is useful for subjects which keep moving and stopping repeatedly. 
During AI Servo AF, you can press the <A> button to start or stop the AI 
Servo AF operation. The exposure is set at the moment the picture is 
taken. Thus, the optimum focusing and exposure will always be 
achieved as you wait for the decisive moment.
During Live View shooting or movie shooting
• With setting 1 or 3, press the <A> button for One-Shot AF. Also, using 
the touch shutter will take a picture without autofocusing.
• With setting 2, press the shutter button halfway for One-Shot AF.
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