FujiFilm Discovery S600 ZOOM Date Owner's Manual page 33

Dealing with red-eye
When you photograph a person in dim light using flash, the pupil of the eye will sometimes
appear red. Under low light, the pupils of the eye dilate for better vision. Red-eye is caused
by light from the flash entering the dilated pupils and being reflected back to the lens. Red-
eye reduction causes a preliminary flash to fire before the actual picture is taken. This
causes the pupil to contract, reducing this reflection. When the actual flash exposure is
made, the degree of reflection is minimized, thus reducing red-eye.
When using red-eye reduction mode
Ask your subject to look directly into the camera.
Approach as closely as possible to make your exposure.
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