Tips on How to Avoid The Red Eye Effect
There are several photography mistakes that are common to both professionals and amateurs, and one of these is the redeye effect.
Redeye occurs more at night. It is because the eye’s pupil expands to allow more light in, and your camera’s flash reflects nearly directly back off the exposed retina. Lots of cameras have a redeye setting that pre-flashes a bright red light into your eye, causing the pupil to decrease in size, but usually it isn’t enough to compensate at night.
If the subject’s eye absorbs all the light, then you wouldn’t encounter a redeye result. The flash is reflected in your subject’s eye so what do you think why the reflection is red? It is because of all the blood vessels inside the eye.
When you take photos in a dim or dark setting, the light from your camera’s flash reflects off the subject’s eyes so it results in a red glow (redeye) which is the blood vessels illuminated within the subject’s retinas. If your camera does not have a redeye setting, just move the source of the flash away from the lens of the camera. That way the reflection wouldn’t be aimed directly back into the lens.
Now when moving the flash doesn’t work, try to capture the subject looking slightly away from the camera’s lens rather than straight at the camera.
You can also turn off your flash. When you change the size of the subject’s pupil and adjust the distance between the flash and the camera’s lens you will not encounter a redeye result. When you increase your distance from the subject, the reflection from the back of their eyes never reaches the lens and the redeye effect is reduced or even prevented.
Avoiding the red eye effect can only be done by changing one of three things: the size of the subject’s pupil, the distance between the flash and the subject, and the direction of the camera lens in proportion to the subject’s eyes.
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