Canon POWERSHOT A3100IS User Manual page 82

_Shooting with the AE Lock
You can lock the exposure and shoot, or set the focus and exposure
separately to shoot.
AE stands for "Auto Exposure".
Lock the exposure.
_, Point the camera toward the subject and
press the A button while pressing the
shutter button halfway.
_. When
AEL
appears on the screen, the
exposure will be locked.
_, If you release your finger from the shutter
button and press the ,A button again,
AEL
will disappear and the AE will unlock.
2 Compose the scene and shoot.
Shooting with the FE Lock
Just as with the AE lock, you can lock the exposure for shooting with the
flash.
FE stands for "Flash Exposure".
Choose _. (p. 67).
Lock the flash exposure.
_, Point the camera toward the subject and
press the A button while pressing the
shutter button halfway.
_. The flash will fire and when
FEL
a ppears on
the screen, the flash output will be retained.
_, If you release your finger from the shutter
button and press the A button again,
FEL
w ill
disappear and the FE will unlock.
Compose the scene and shoot.