red eye

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red eye

The appearance of red eyes on people and animals when pictures are taken with flash. In dimly lit environments, the eye's iris opens to let in more light. The light from the flash unit reflects back from the retina, which is full of blood vessels; hence, the red look.

Pre-Flash
Some cameras have an option that produces a flash of light just ahead of the actual flash. The first flash causes the iris to close, eliminating some of the reflection.

Automatic and Manual Removal
Some digital cameras have red eye removal, which removes the red before the image is stored in the camera's flash memory. The removal may be automatic or an option that can be enabled and disabled. However, all photo editing programs have red eye removal. It requires that the user highlight the area around the eyes and either select a default removal function or adjust the amount of reduction. Some programs offer options for replacing the red with a color, which is helpful for pictures where the eyes are an important focal point.

The red can always be removed manually in an image editor by carefully replacing the red with the correct eye color. Although this takes a fair amount of practice to do it well, the results are often the best.


Red Eye Removal
In Nabocorp's excellent cam2pc photo editor, red eye removal is accomplished by sliding a lever to the desired result using the adjustment in the dialog box at the bottom left. (Images courtesy of Nabocorp Softwares, www.nabocorp.com)


Red Eye Removal
In Nabocorp's excellent cam2pc photo editor, red eye removal is accomplished by sliding a lever to the desired result using the adjustment in the dialog box at the bottom left. (Images courtesy of Nabocorp Softwares, www.nabocorp.com)
References in periodicals archive ?
FotoNation embedded red-eye reduction technology finds and digitally corrects red eye caused by a reflection of the flash off the cornea of the eye.
Mr Fort said, 'We are delighted to announce the launch of Red-Eye in the UK, the company's first major product to be exploited by a major device company.
Working in concert with Face Detection, the "Red-eye Correction" feature helps to detect and correct red-eye during playback mode.
Caused by the reflection of the camera's flash from blood vessels in the back of the retina, red-eye can ruin an otherwise perfect picture.
Photobot uses Perfectly Clear[TM] to improve brightness, Full Spectrum RGB[TM] to deliver vibrant, life-like colors and FotoNation's Red-Eye[TM] to reduce red-eye.
Who leaves on a red-eye to go to San Francisco or Sacramento?
A team official said Karros was experiencing back pain before he left Los Angeles on Sunday on a red-eye for Dodgertown.
One-click photo correction, red-eye removal and a built-in cropping and rotation tool bypass the photo-preprocessing step completely.
Additionally, ArcSoft's automatic red-eye removal and spot and patch removal technologies have been integrated into the program, letting users perform common blemish removal functions in one click.
Adobe Photoshop Album Starter Edition software, offered as a free download for consumers, is ideal for people who want a fast, easy way to fix common photo flaws -- such as red-eye and lighting -- customize their photo slideshows, and personalize photo e-mails to share with friends and family.
Claiborne will attend USC's team banquet tonight, then take a red-eye flight to Orlando for Friday's Butkus Award presentation.