Canon EOS Rebel T6i EF-S 18-55mm IS STM Lens Kit 手册

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页码 212
121
You can lock the exposure when the area of focus is to be different from 
the exposure metering area or when you want to take multiple shots at 
the same exposure setting. Press the <A> button to lock the exposure, 
then recompose and take the picture. This is called AE lock. It is 
effective for backlit subjects, etc.
1
Focus on the subject.
Press the shutter button halfway.
The exposure setting will be 
displayed.
2
Press the <A> button. 
(0)
The <A> icon lights up in the 
viewfinder to indicate that the 
exposure setting is locked (AE lock).
Each time you press the <A> button, 
the current autoexposure setting is 
locked.
3
Recompose and take the picture.
If you want to maintain the AE lock 
while taking more shots, hold down 
the <A> button and press the shutter 
button to take another shot.
A
 Locking the ExposureK