Canon PowerShot A550 User Manual page 80

Locking the Exposure Setting
(AE Lock)
[!]
Shooting Mode
OM
42
You can set the exposure and focus separately. This is effective
when the contrast is too strong between the sUbject and
background or when a subject is backlit.
Turn on the LCD monitor.
Focus on the part of the subject on which
you wish to lock the exposure setting.
Press and hold the shutter button halfway
and press the
ISO
button.
• The
!iIll
icon will display.
, Re-aim the camera to compose the shot as
• • . . . i
desired and press the shutter button fully.
To Release the AE Lock
Press the ISO button.
~
• mode, can
LjI •
You can use the FE lock when using the flash (p. 43).