Canon POWERSHOT SD400 DIGITAL ELPH User Manual page 94

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.
fires.
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11
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Pressthe DISP.button to turnthe
LCDmonitoron.
Focuson the part of the subjecton
whichyouwishtolocktheexposure
setting.
Press the shutterbutton halfway
(two beepswill play) and pressthe
[] button.
• The exposure setting is locked.
The _ icon will display.
Re-aim the camerato compose the
shotas desired and pressthe
shutterbuttonfully.
92
To Release the AE Lock
Press the [] button.
oAE lock can also be set and released in %_, mode (p. 84).
• The AE lock may be released by pressing the zoom lever, MENU
button or _. button, or by changing the white balance, ISO speed,
photo effect or the shooting mode, or by turning the LCD monitor off.