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Red-eye effect

en.wikipedia.org/wiki/Red-eye_effect

The red-eye effect in photography is the common appearance of red pupils in ... The camera records this reflected light. The main cause of the red color is the ample amount of blood in the choroid w...

What Causes Red Eyes in Photos and How to Fix the Red Eye Effect

www.allaboutvision.com/resources/red-eye-photo.htm

The appearance of red eyes in pictures, known as the "red-eye effect," occurs when a camera captures light reflecting from the retina at the back of your subject's ...

What Causes Red Eye In Photographs? - Science Questions, from ...

www.thenakedscientists.com/HTML/questions/question/2501/

Dec 6, 2009 ... I have a question about "redeye" when taking a picture using a camera. I've recently started the task of correctly sorting through all by digital ...

www.ask.com/youtube?q=What Causes Red Eye in a Camera&v=KBk0LBMjmbI
Dec 30, 2014 ... How can a camera's flash make your eyes glow red? Tune in to learn how it works -- and how to prevent it. Learn more at HowStuffWorks.com: ...

What Causes the Red Eye Effect? | Yale Scientific Magazine

www.yalescientific.org/2011/05/what-causes-the-red-eye-effect/

May 12, 2011 ... Your modified appearance is caused by the red-eye effect,… ... a result of the eye's biology interacting with the camera's lighting mechanism.

Camera Red-Eye - Science Updates - Science NetLinks

sciencenetlinks.com/science-news/science-updates/camera-red-eye/

He says red-eye occurs when your camera's flash reflects off the back of the eye ... The purpose of this flash is to cause the subject's pupil to constrict (just as it ...

Why do people have red eyes in flash photographs? | HowStuffWorks

electronics.howstuffworks.com/question51.htm

The flash on a camera is bright enough, however, to cause a reflection off of the retina -- what you see is the red color from the blood vessels nourishing the eye.

The Red Eye Effect: What It Is, Avoiding It, and Removing It ...

www.photographymad.com/pages/view/the-red-eye-effect-what-it-is-avoiding-it-and-removing-it

Learn what causes it, how to prevent it, and how to fix it. ... The red eye effect is caused by your camera's flash bouncing off the back of the subject's eyes.

Red eyewhat causes it, and how to reduce it

www.digital-photography-tips.net/red-eye.html

Explanation of what causes red eye, and how to reduce it. ... The "reduce" or "anti " red eye function which is almost certainly on your digital camera.

Why Eyes Turn Red in Pictures | CooperVision

coopervision.com/blog/why-eyes-turn-red-pictures

Nov 4, 2014 ... As your camera's flash goes off, the pupil doesn't have time to react, and the light causes a reflection on the retina which bounces back to the camera. There's a ... It's easier to avoid red-eye to begin with than try and fix it later.

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Photos Can Help Diagnose Children's Eye Problems and Save Sight

www.aao.org

Jul 28, 2014 ... A red reflex is produced when the flash of a camera lights up the ... that even the most serious eye conditions don't typically cause children pain ...

Why do some people have red eyes in pictures and some do not ...

www.quora.com

Nov 23, 2012 ... A red eye is essentially light reflecting off the blood vessels in your retina - that is a ... I know red eyes in pictures are caused by flash which human eyes reflect ... In fact, staring directly at the camera's flash while anticipating the ...

What Causes Red Eyes In Photographs - Today I Found Out

www.todayifoundout.com

Sep 15, 2011 ... For instance, camera's with red eye reduction settings use a two flash system in which the first flash causes the pupil to constrict, and the ...