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flash - Can red eye in only one eye be a sign of cancer? - Photography ...
- https://photo.stackexchange.com/questions/47553/can-red-eye-in-only-one-eye-be-a-sign-of-cancer#:~:text=If%20the%20eye%20is%20facing%20off%20to%20one,the%20frame%20not%20looking%20directly%20at%20the%20flash%2Flens
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What Are the Causes of Red Eye in Flash Photography
- https://drschnipper.com/blog/what-causes-red-eye-in-flash-photography/
- Why do eyes appear red? As light from the camera flash enters the eye, it’s reflected back into the camera lens. The retina (the nerve tissue in the back of the eye) is essentially transparent, but the underlying choroid (the vascular layer of the eye, containing connective tissue, lying between the retina and the white of the eye) has pigment and a lot of …
Why do people have red eyes in flash photographs?
- https://electronics.howstuffworks.com/question51.htm
- If you shine a flashlight in a person's eyes at night, you don't see any sort of reflection. The flash on a camera is bright enough, however, to cause a …
The Red Eye Effect: What It Is, Avoiding It, and Removing It
- https://www.photographymad.com/pages/view/the-red-eye-effect-what-it-is-avoiding-it-and-removing-it
- The red eye effect is caused by your camera's flash bouncing off the back of the subject's eyes. Image by Bert Boerland . If your camera's flash is mounted close to the lens, as with most compacts and DSLRs with built-in flash, then the …
Red eye in portraits | Flash photography problems solved
- https://www.eos-magazine.com/articles/flash/red-eye.html
- When you use an external flashgun on-camera, or use the camera’s built-in flashgun, it may be convenient but there are several potential issues to be aware of. One of them is the dreaded red eye, which can make your subject look a little demonic. This phenomenon occurs in lower light levels when light travels down the camera's optical axis and into the pupil …
flash - Can red eye in only one eye be a sign of cancer?
- https://photo.stackexchange.com/questions/47553/can-red-eye-in-only-one-eye-be-a-sign-of-cancer
- If the eye is facing off to one side, or outside the main area painted by the flash, it may not appear red. Having one red eye could happen if, for example: the person is quite close to the camera off to one side of the frame not looking directly at the flash/lens has a lazy eye (or is otherwise pointing their eyes in different directions)
This is what causes red-eye in photographs - DIY Photography
- https://www.diyphotography.net/causes-red-eye-photographs/
- The first is the red-eye reduction feature of your camera. It works by sending out several pre-flashes before the main exposure. This tricks your eye into thinking it’s bright, closing down your pupil and reducing the risk of light reflecting off the back of the eye. It’s helpful in some circumstances, but I’ve it’s not always so successful.
"Red Eyes" in Flash Pictures: What Causes the Effect?
- https://academic.tips/question/what-are-the-causes-of-red-eyes-in-flash-pictures/
- People’s eyes will appear red when a photographic flash is used to capture images in low light. This effect has been observed to take place due to the absence of the tapetum lucidum in human eyes. This flashlight is what causes the pupil to dilate. This means that the retina is forced to absorb or take in a lot of light.
Photos Can Help Diagnose Children’s Eye Problems and …
- https://www.aao.org/eye-health/tips-prevention/diagnosing-children-from-photographs
- An Abnormal Red Eye Reflex in Photos Can Help Diagnose Serious Eye Conditions. On rare occasions, abnormal red reflexes can signal more dangerous eye conditions. Asymmetrical red reflex. An asymmetrical red reflex is when: only one eye reflex appears red, or; one eye's red reflex is dimmer than the other; This may be an sign of strabismus. Strabismus is …
flash - How to Avoid Red-Eye in Photos? - Photography …
- https://photo.stackexchange.com/questions/748/how-to-avoid-red-eye-in-photos
- Red eye is caused by light from a flash that is close to the lens entering the subjects pupils and bouncing off the rear of the eye back into the lens. (The main cause for the red colour is the blood in the back of the retina). Wikipedia has more info. To prevent red-eye you need to prevent this light bounce back.
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