What causes the ‘Red Eye’ in digital photograph?
August 23rd 2006 16:25
Have you ever wondered ‘what causes the Red-Eye in digital photographs?’
Have you been subject to one lately… it’s not fun when the subject is YOU! Especially when you look like the red-hot devil (minus the horns) that had been transported from Hell…
Girl with a 'Red-Eye' syndrome!!
Red-eye can result from any camera with a built-in flash, not just a digital camera. It’s because a built-in flash is positioned very close to the camera lens. When people look into the lens, they're also looking directly at the flash, which means that their retinas pick up and reflect almost all of the light from the flash. When you use an external flash head, you can position the flash farther from the lens and also angle the flash so that it's not aimed directly at the eyes.
Yes, I agree we can’t avoid the flash specially when the natural light of the room is not bright enough. So what can be the remedy? Well, we've not much choice but to rely on the software that help edit digital photographs. Pretty much any digital photographic software will do the job.
I mostly use the iPhoto software application of Mac to do the editing. Besides you can also rely on Photoshop and other related easy to handle software applications in the market today.
Some of the tactics I generally use to prevent red-eye are:
(a) Turn on as many lights as you can – especially in indoor photo-shoots. This helps to neutralise the light in the room with that of flash of the camera.
(b) If it’s daytime, try to place the subject near to a window where the sunlight is in direct contact with the subject. This also help prevent shadows been generated on the photograph.
(c) Finally, switch the flash to red-light reduction mode. This feature is present on most digital cameras. It’s good to read the manual before hand so that you’ll have a good understanding of your camera. Remember it’s always good to learn the ‘rules’ before you play with the toy…
Well then good luck with your ‘click’ … 'clicks'..
The following site is a good tutor for the beginners who are paranoid about the red-eye syndrome to test & try. Its simple and easy to follow steps are very encouraging to try & rectifying the error youself.
Some tips to remove Red-Eye from digital phtotos
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Comment by Adrian
Philosophy Blog
"The flashlight takes on the tint of the blood vessels in the eye"... That's kinda sick! Thanks!
Comment by Smiley Eyes