Most new cameras have something called “red eye reduction” for flash photos. It’s a feature that keeps folks looking like regular human beings and less like they’ve been possessed by Lucifer. But what causes red eye in the first place? And how do new cameras keep eyes looking normal?
The aptly named “HowStuffWorks.com” explains why people get red eyes in flash photos. The red eyes get their color “from light that reflects off of the retinas.” So, “what you see is the red color from the blood vessels nourishing the eye.” If not for the blood vessels, the light would bounce back as white.
A blog entry from Strange Questions goes into a bit more detail. Apparently red eye is more frequent among people with “light blue eyes, light skin, and light hair.” Additionally, compact cameras are more likely to cause red eye. The smaller the camera, the closer the lens is to the flash. And the closer the lens is to the flash, the more likely you are to get red eyes.
Fortunately, many cameras have “red eye reduction” that helps people look a bit more normal in flash photos. HowStuffWorks.com explains that in order to make this feature work, the camera fires off two flashes. The first flash, which goes off right before the photo is snapped, causes the pupils to contract. That reduces red eye. The second flash goes off when the shutter opens.
There are other ways you can limit red eye. If the flash is detachable, try holding it away from the lens. Another method, according to HowStuffWorks, is to try aiming the flash at the ceiling and rely on reflected light. Thanks to digital cameras, you can always snap another photo if these methods don’t work.
Got any of your tips for taking better photos? By all means, leave a comment below. I just got a new camera and it has more settings than my TV has channels. I could use all the help I can get.
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