A Locking The Exposure (Ae Lock) - Canon EOS Rebel T4i 18-135mm IS STM Lens Kit Instruction Manual

A Locking the ExposureN
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 shot. This is called AE lock. It is effective for backlit subjects.
AE Lock Effects
Metering Mode
(p.115)
*
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* When the lens' focus mode switch is set to <MF>, AE lock is applied at the
center AF point.
Focus the subject.
1
Press the <A> button.
2
Recompose and take the picture.
3
AF Point Selection Method (p.97)
Automatic Selection
AE lock is applied at the AF
point that achieved focus.
AE lock is applied at the center AF point.
Press the shutter button halfway.
The exposure setting will be
displayed.
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.
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.
AE lock is applied at the
selected AF point.
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Manual Selection
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