Canon POWERSHOT SD400 DIGITAL ELPH User Manual page 95

You can lock the flash exposure so that the exposure settings are correctly
set for a particular portion of your subject.
@
/
o_
0
a
Focusonthe part of the subjecton
which youwish to locktheflash
exposure setting.
the shutterbutton halfway
(twobeepswill play) and pressthe
@ button.
The flash will fire a pro-flash and lock the
flash exposure to the required intensity to
illuminate the subject.
The _ icon will display.
i
Re-aim the camerato compose the
shotas desired and pressthe
shutter button fully.
93