What causes red eyes in photos?

[le harry]

I went to a 21st last night and i'm the only person who has red eyes in all the photos haha, quite annoying really. Just wondering what the cause of it is.

[Moh]

Its the reflection of the light from the flash off the retina at the back of the eye.

[Minstrels]

Alcohol. Your a dirty piss head! ol:

[e5]

The light getting into your eye and it justs showin the blood behind your eye... something like that

[cocaine]

you're the devil

[le harry]

Its the reflection of the light from the flash off the retina at the back of the eye.

Suppose there isn't anything that can prevent it?

[Paulio]

Shutting your eyes or not having photo's taken?

Err, I don't think so.. You can remove the red eye on a computer though.

Suppose there isn't anything that can prevent it?

[Moh]

Shutting your eyes or not having photo's taken?

Err, I don't think so.. You can remove the red eye on a computer though.

There are four ways of reducing it. As ambient light increases the iris constricts making the pupil smaller to protect the eye from excessive light entry. So if you take a picture somewhere that is brighter eg turn the light on in a room, the pupil constricts so less redeye. Also if your camera (digital or film) has a redeye reduction flash, this is a pre-flash which aims to get your eye to close down the pupil thus achieving the same thing. Thirdly, if the subject looks slightly away from the camera the reflection off the retina becomes less directed at the camera. Fourthly, get a camera with a separate flash unit or at least a camera which has its built-in flash positioned as far from the lens as possible. This will once again result in the reflection off the retina being less directed at the camera and reduce redeye.

I love google

[hamheyelliot]

It's possible you were the one who got Wasted at before mentioned event.

[le harry]

It was at a bar, I was the only one not drinking haha.