About Red Eye Reduction in Digital Cameras
Every photographer has taken a picture of people where their eyes showed up as with a devilish red hue. Red eye occurs when a flash is used in a low-light situation, but there are ways to avoid it.
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Cause
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Our eyes dilate in low-light situations. When the pupil is open and a camera flash goes off, light reflects off the retina in the back of the eye. The red color comes from all of the tiny blood vessels in our eyes.
Considerations
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The angle at which the light hits the eye and the position of the subject is a top concern to photographers as far as reducing red eye.
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Prevention/Solution
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There are ways to change the angle of the light hitting the eyes. You can move the flash away from the camera by mounting it to the camera's hot shoe, use a flash bracket or have the subject look away from the camera slightly.
Features
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Some cameras have built-in red eye reduction. The camera gives off a pre-flash or a series of flashes to allow the person's eyes to acclimate to the added light. Another flash fires moments later, and the camera then takes the picture.
Fixes
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If you still get red-eye in your picture, use photo editing software to eliminate it.
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References
- Photo Credit AikiDude
