Ae Lock - Canon Xsi Instruction Manual

A AE LockN
Use AE lock 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.77)
*
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* When the lens' focus mode switch is set to <MF>, AE lock is applied at the
center AF point.
88
Focus, then press the <A>
1
button.
Recompose and take the picture.
2
Automatic Selection
AE lock is applied at the AF
point that achieved focus.
AE lock is applied at the center AF point.
(0)
Press the shutter button halfway.
The exposure setting will be
displayed.
The <A> icon lights in the viewfinder
to indicate that the exposure setting is
locked (AE lock).
Each time you press the <A> button,
it locks the current exposure setting.
AF Point Selection Method
AE lock is applied at the
selected AF point.
Manual Selection