When taking a picture, what causes the red eye effect?

It's caused by the light of the flash reflecting of the retina of the subject's eyes.

Most modern digital cameras give of 4 to 5 lights before taking the actual photo, letting the pupils close a bit, reducing the red eye.

Other cameras have a secondary light that stay on for 2 to 4 seconds, also letting the pupils close a bit.

I you have a bargain digital camera or disposable camera, most likely they won't have these features. If you have a good $90 and up camera and can't find if it has these features or not, resort to the manual or the company's website.

I use HP Photosmart Premier to get rid of Red Eye. It makes it an ugly gray color, but at least it's not red. I don't know what to tell you.

Best of Luck.

It happens when your flash is too close to your lens. This causes the light from the flash to bounce off a person's retinas at just the right angle that it can be seen in the picture. Human retinas reflect back the color red. To solve the problem, use the preflash (causes pupils to constrict, blocking the flash), use software to color the red something else, have the person look somewhere else besides directly into the camera or simply mount a flash on the camera's hotshoe, which is usually well away from the lens.

The red color comes from light that reflects off of the retinas in our eyes, plus on most of today's point and shoot style digitals, the flash is too close to the shutter. Most flashes are quicker than the pupil's ability to contract because most of the time in low light situations, the pupils are fully dialated to allow more light. Most cameras now have a pre-flash or strobe that causes the pupil to contract before the shutter goes off to eliminate the light bouncing off the retina...or if you have an SLR camera, move the flash further away from the shutter.

Assuming you don't have the money to buy another camera with a better prestrobe to -reduces- (not eliminates) red eye, try taking another picture immediately after you take the first one.

large pupils reflecting the flash.. some cameras have an extra flash before the real flash wich closes the pupil to eliminate red eye.. to eliminate the red eye with photoshop just paint all the red black in the eye when you zoom in on it... sometimes it looks weird because of a lack of glossiness to the eye though.. but thats the best your gonna get without a special camera designed for it

you knwo how your pupils dialate?? when they go into and out of light?? when the camera flashes your pupils do not have enough time to dialate so the eye refects light back to the camera causing a redish glare....de nada

The red light will always show on pictures, if you trans, your pic, into your lap or com, install your pic, in laptop, and click pic, and then click tools , it witll tell you how to fix that and then you can just print, as many as you like. I hope this can help.!

Light reflecting off the back of the retina in the eye.

TRY A DIFFERENT ANGLE......

I NEVER GET RED EYE AFFECT, I'M NOT A PROFESSIONAL PHOTOG.

There is a red eye click on ur cam, get your manual from the place you hid it or go to your local camera store and he will fix it for u!

DUH