Why do eyes appear in red in digital images?

Answer 1

First of all, it's not unique to digital cameras.

It's a result of the light from the flash coming at the subject's eyes at such an angle as the light bounces off their retinas, making their eyes appear red.

As the angle between the lens, the eye, and the flash head increases, red eye decreases. Thus, for a given set up, it's less likely to happen at close distances, and more likely to happen at farther distances.

The only real solution, though, is to separate the flash head and lens more. This is why you often see wedding photographers with their flashes mounted on flash brackets, and the flash head a foot or more above the lens.

Unfortunately, this isn't an option on most point and shoot cameras.

The redeye reduction mode does sort of work, but it's slow and uses a lot of battery power.

Answer 2

Because that's what the retina looks like. It has a lot of blood vessels and it looks red. Normally, a persons iris will close enough so that not enough light gets back to the retina to be reflected back so you can see it. But for an instant, with a camera flash, enough light gets back to the retina to be reflected to the camera before the iris can react to the bright flash and close. That's why the newer cameras have that multiple flashes before the picture it taken, to get the subjects' iris to close in order to minimize "red eye".

Answer 3

It's the light reflecting off the retina at the back of the eye if the person is looking at the camera.
It can be removed with software.

Answer 4

the flash is to close to the lens, i dont get "red eye" i use a flash on a bracket or off camera flash,

most pros that are trained dont get red eye either...........

small cameras the flash and lens are to close together.......design flaw/consumer desire for small

a

Answer 5

your camera has settings to prevevt this
check your camera settings