Red-Eye Reduction - This flash mode actually sets of a short flash that causes the irises in the subjects eyes to close thereby eliminating the red-eye in the final image.
red-eye reduction
Using a flash can cause subjects in the final print to have red eyes. This is caused by the reflection of the flash burst on the iris of the eye.
Red-eye reduction mode. A mode that fires a preliminary flash to close the iris of the eye before firing the main flash to take the picture.
Red-eye. An effect that causes peoples eyes to look red in flash exposures.
Red-Eye Reduction Mode - A special flash mode whereby a pre-flash or a series of low-powered flashes are emitted before the main flash goes off to expose the picture. This causes the pupil in the human eye to close and helps eliminate red-eye.
Red-eye reduction. A way of reducing or eliminating the red-eye phenomenon.
Red-eye Reduction
A method of reducing or eliminating red-eye from flash photographs by using a short burst of light, or pre-flash, to momentarily ‘stop-down’ the pupils of the subject’s eyes prior to the actual flash exposure.
red-eye reduction
common photography problems
What causes red eye in photographs is a very common question. What is Red Eye
There are probably millions of family albums with red eye in the photographs.
Red-eye reduction flash works best when the subject isn't too far away and looks directly into the camera.
Red-eye reduction special effects are standard tools for almost all software editing programs. Essentially, red-eye reduction allows you to insert more natural colors in place of glowing red eyes.
Red-eye reduction techniques will be less effective when photographing people with dilated pupils.[citation needed] ...
Red-eye Reduction
A system that causes the pupils of a subject to shrink by shining a light prior to the taking of the flash picture. This prevents the red-eye effect.
...
FLASH & RED-EYE REDUCTION
A big problem with camera flashes is unnatural red eyes in subjects, caused by a flash which glares back from the subject's pupil.
Red-eye and Red-eye Reduction
Red-eye is an effect caused by an electronic flash reflecting off of the human eye and making it look red.
External flashes are used for many things including increased flash range and red-eye reduction.
Film: A photographic emulsion of an image that is fixed on a flexible, transparent base.
I've experimented with its different flash modes and I found that the Fill-In flash works better than the Automatic Flash or Red-Eye Reduction mode. Even in taking pictures indoors with even lighting, I use the Fill-In flash mode.
Some cameras include additional features, such as red-eye reduction or night portrait mode.
To overcome this, many cameras have a red-eye reduction mode, but it is, as the name suggests, only a reducer. It works by firing a pre flash to reduce the size of the pupils, and in doing so reduces the area of red.
Some cameras have an added red-eye reduction mode, though their solution seems a bit strange. When this camera mode is turned on, there are not one but two flashes for each picture. The first one is a pre-flash, half a second before the real one.
- Auto, Auto & Red-eye reduction, Fill-in flash, Slow sync, Flash off,
- Range 0.2m~3.0m(Wide), 0.2m~2.3m(Tele)
- Recharging Time Approx. 5 sec.
Viewfinder
None
LCD monitor
- 2.5-inch TFT
- 230,000 pixels
Connectivity ...
The solution is to turn off the camera’s red-eye reduction and hence eliminate the pre-flash. Some of the better digital point-and-shoots have a special slave mode and both of the models I use feature this.
Be sure to get a camera with red-eye reduction mode. This works with a pre-flash prior to the flash used for exposure and does reduce the red-eye effect often seen when photographing people indoors.
FotoNation is the leading licensor of embedded red-eye reduction technology to the digital camera industry, with licensees including Kodak, Nikon, PENTAX, Sanyo, Samsung, Nikon, and and other popular brands.
Full, fill flash and flash with red-eye reduction. Full flash is for indoor or night time flash photography. Fill flash is for when your subject is back lit and you need to fill in the shadows.
Here's how most people take pictures at birthday parties: Flash on, perhaps with red-eye reduction pre-flash, the birthday boy or girl blowing out the candles or cutting the cake, maybe a few posed shots afterwards with friends.
Technical measures for red-eye reduction effects with flash shooting. Red lightning eyes originate during the reflextion of the flash light in the retina of the eye.
The other flash mode available is the red-eye reduction mode which we discussed earlier on the limitation of built-in flash. The default mode of most built-in flash is usually the auto mode, the camera will decide when it should fire the flash.
Recycling Time The time necessary for an electronic flash to recharge and be ready for the next picture, it often depends on the type and condition of the battery and the guide number of the flash. Red-Eye Reduction (Speedlight mode) Nikon ...
Other features popular on P&S digital cameras are Face Detection (where the camera automatically detects the faces in a scene and focuses on one of them), automatic Red-Eye reduction (red-eye occurs when the light from the flash is reflected from ...
These include Red-eye Reduction flash for countering red-eye, and the softer Fill-in Flash for enhancing daylight shots that might otherwise be silhouetted. Some compacts, and all DSLRs, will also have a hotshoe for attaching an external flash unit.
More complex digital cameras offer built-in flash units with more comprehensive flash options like red-eye reduction, second curtain synch, and fill flash. Some digital cameras provide an auxiliary hot shoe to permit the use of external flash units.
If you've got some experience taking photographs, look for a digital camera that lets you manually set focus and exposure. Red-eye reduction is a common feature on digital cameras, as is an electronic flash.
Look for the red-eye reduction flash mode to use for your digital portrait photography. But they are not perfect. Sometimes they don't always result to what their supposed to be.
by a camera with the flash too close to the lens (as is the case with nearly all consumer digicams and film cameras). Using a flash on the camera hotshoe may help; using an off-camera flash is even better. Most cameras have a red-eye reduction flash ...
on yet, many technology experts believe it's inevitable they will in the near future [source: Moynihan]. For now, the offerings are slim, but as cost of production goes down, you may someday see WiFi become as common a feature as red-eye reduction.
When you choose Portrait mode, the camera will select a wide aperture setting, minimizing your depth of field for a soft background effect, and also may adjust your zoom. In addition, the flash setting will try to switch to red-eye reduction.
Future Frontier labs will offer automatic red-eye reduction no matter where in the picture it occurs.
 See also: Red-eye, Reduction, Camera, Flash, Light
  
|
RSS
