Every time you take a picture, regardless of the lighting conditions. Use when the subject is in shadow or is "backlit" (when the light is behind the subject).
NOTE:
(Not available in Smart Capture mode.)
Red Eye
Your camera can correct red-eye using 2 methods. To choose a red eye setting, see .
Preflash
A preflash fires, shrinking the eye pupil, before the picture is taken.
Digital Correction
A preflash does not fire; the camera corrects red eye.