red-eye effect

The red-eye effect can be prevented in a number of ways.

The "red-eye effect" is another problem with on camera and ring flash units.

The red-eye effect is a photographic effect, not seen in nature.

Similar effects, some related to red-eye effect, are of several kinds:

The reason camera makers have developed new ways for limiting the red-eye effect is that it has become an increasing problem.

The color of the iris itself is of virtually no importance for the red-eye effect.

In animal tests, the new variant appeared to relieve the pressure while creating little of the red-eye effect.

Many parks offer minimal editing tools (such as red-eye effect removal) before purchase.

When photographed with a flash, the iris constricts but not fast enough to avoid the red-eye effect.

"The light is farther from the lens axis, so there is less of that red-eye effect," he said.

On photographs taken using a flash, instead of the familiar red-eye effect leukocoria can cause a bright white reflection in an affected eye.

Cats and dogs with blue eyes (see eye color) may display both eyeshine and red-eye effect.

Equally ingenious, and so far unique, is the Photura's method of reducing the red-eye effect in portraits.

The red-eye effect in photography is the common appearance of red pupils in color photographs of eyes.

Some cameras use a blocking oscillator to strobe the flash prior to a shot to reduce the red-eye effect.

And a new red-eye reduction tool makes it possible to fix the pesky red-eye effect in family snaps.

In many flash photographs, even those without perceptible red-eye effect, many animals' pupils display eyeshine.

Although eyeshine is an unrelated effect, animals with blue eyes may display the red-eye effect in addition to eyeshine.

Testing for retinal retroreflection (red-eye effect)

This is obvious because the red-eye effect is most apparent when photographing dark adapted subjects, hence with fully dilated pupils.

In flash photographs, odd-eyed cats typically show a red-eye effect in the blue eye, but not in the other eye.

The role of melanin in red-eye effect is nicely demonstrated in animals with heterochromia: only the blue eye displays the effect.

A related effect, red reflex, is seen in fundoscopy; unlike the red-eye effect, it is not a photographic effect.

The real gems here are brushes that can magically "heal" scratches and spots, smooth wrinkles or correct the red-eye effect found in many flash photos.

The feature film Blade Runner intentionally induced a red-eye effect to indicate that certain characters were "replicants," an artificial life-form in the story.