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Redeye Reduction

Red reflection is caused by a built-in or clip-on flash positioned too close to the lens. By rasing the flash, you can prevent direct reflection on the camera lens.

One of the most popular features on the SLR today, the built-in flash, almost always causes redeye in subjects. Redeye occurs when a flash positioned near the lens of the camera enters the pupils of a subject's eyes, then bouncing off the blood-rich retinal membranes back to the camera. Redeye can be avioded simply by rasing the flash further away from the lens.

Redeye Solutions

Change flash beam's geometry: Use bounce flash with your SLR's flash: Whether off the ceiling, walls, or a reflector. Move closer to the subject using a wider-angle lens changing the relative angle of the flash beam.
Narrow subject's pupils: Turn up room lights. Some cameras have a type of redeye reduction called Preflash. Your flash fires one or more preliminary pupil-narrowing flashes then takes the photo. Incandescent beams use the same principle, except the beam is steady, causing less distraction to the subject.	Movie Requirements

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