Canon PowerShot ELPH 100 HS User Manual page 78

Detecting a Face and Shooting (Smart Shutter)
Join the subjects and look at the
camera.
When the camera detects a new face, the
lamp and self-timer sound will speed up
(the lamp remains lit when the flash will
fire), and two seconds later the shutter will
release.
To cancel shooting with the timer after
countdown has started, press the
MENU
button.
After choosing £:_ in Step 1, press the Av buttons.
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