Shooting With The Ae Lock - Canon Powershot SX20 IS User Manual

Shooting with the AE Lock

When you wish to take several shots with the same exposure, you can set the
exposure and focus separately using the AE lock. AE stands for "Auto
Exposure".
Program Shift
If you lock the exposure and then turn the  dial, you can change the shutter
speed and aperture value combination.
90
Lock the exposure.
●
Point the camera toward the subject and
press the b button while pressing the
shutter button halfway.
When ¤ appears, the exposure will be
set.
●
If you release your finger from the shutter
button and press another button, ¤ will
disappear and the AE will unlock.
Compose the scene and shoot.