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en.wikipedia.org/wiki/Red-eye_effect

The red-eye effect in photography is the common appearance of red pupils in color .... Taking pictures without flash by increasing the ambient lighting, opening the lens ... In addition, people do not look natural with small pupils, and direct lighting from .... By using this site, you agree to the Terms of Use and Privacy Policy.

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

Tell your subjects to look slightly away from the lens ... the less likely you will have red eyes in pictures. Make the room brighter. ... Making the room less dim by turning on more lights can help eliminate red eyes. ... before the camera actually takes the picture.

www.quora.com/Why-do-some-people-have-red-eyes-in-pictures-and-some-do-not

It has to do with the flash reflecting off of the retina of the eye. When someone looks directly into ... Why do our eyes turn red when we cry? ... When you dont use red eye reduction, why some people's eyes alone go red in the photo will depend on ... the eye.while taking pictures the red light captured from bright flash light and ...

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

Nov 4, 2014 ... Why does red-eye happen? ... If you take a photo of your cat or dog, you may notice the color may be green or yellow ... Turn on more lights.

www.aao.org/eye-health/tips-prevention/diagnosing-children-from-photographs

Jul 28, 2014 ... We are taking more pictures than ever, and sharing them with a growing ... If you do spot an abnormal red reflex, bring the photo to your child's ...

www.todayifoundout.com/index.php/2011/09/what-causes-red-eyes-in-photographs

Sep 15, 2011 ... When the light from a camera flash goes off, the pupils do not have time to ... Should you simply turn on more lights, your pupils will also constrict. ... This tissue layer acts as a retroreflector, essentially taking the reflected light and ... In a photograph of a child's face, red-eye in one eye but not the other may ...

www.thenakedscientists.com/articles/questions/what-causes-red-eye-photographs

Dec 6, 2009 ... Red eye occurs because when you take a flash photograph - the camera ... I myself NEVER have red eyes on photos, but my wife often does. ... People with wider pupils are more likely to end up with red eye in photos, ... Galleria mellonella caterpillars can consume polythene and turn it into ethylene glycol.

electronics.howstuffworks.com/question51.htm

Take a look at the science behind why red eyes happen. ... We've all see photographs where the people in the picture have spooky red eyes. ... If you shine a flashlight or headlights into their eyes at night, their eyes shine back with bright, ... The first flash causes people's pupils to contract, reducing "red eye" significantly.

lifehacker.com/why-your-eyes-look-red-in-photos-and-how-to-prevent-it-1785821974

Aug 29, 2016 ... When your eyes glow red in photos, it's often because you're taking the ... the room before a photo, too, to make sure your pupils aren't wide to ...

.ask.com/youtube?q=Why+Do+Your+Eyes+Turn+Red+When+You+Take+a+Picture&v=KBk0LBMjmbI
Dec 30, 2014 ... How can a camera's flash make your eyes glow red? ... Everything that you can see is reflecting some amount of light. ... them - plus nerves to carry messages from those cells back to the brain. ... That's why some newer flashes go off twice: once right before the picture snaps, to make your eyes adjust, and ...