2006-11-12 10:00:37 · 2 answers · asked by Gypsophila 3 in Science & Mathematics ➔ Biology
That is a result of the flash being so quick that the eyes remain wide open and the inside of the eyes (retina) with its rich blood vessels is illuminated by the light. That makes the devilish looking red spots. People with light colored eyes are more likely to get a lot of light inside the pupil of their eyes and show up with red eyes.
Shooting the photo in available light not flash, using a camera that has a preflash to get the pupils to contract, or not shooting the picture head-on will avoid it. If you get it then photo imaging software can easily remove it.
2006-11-12 10:08:50 · answer #1 · answered by Rich Z 7 · 0⤊ 0⤋
its because of the wall of the eyes where the cones and rods lie. a direct flash of light could not give much time for the eye to adjust to the light. that is why much of the internal wall of the eye is exposed to the light and reflects much of the light back. so, you get the red eye. Its common to everyone regardless of the color of the eye. That is why other cameras, in getting rid of the red-eye phenomenon, have rapid primary flashes before the big one so that the eye could adjust to the light first. And that is why most of image editor softwares have red-eye fixers to solve this kind of problem.
2006-11-12 18:15:50 · answer #2 · answered by Bhing V 2 · 0⤊ 0⤋