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Remove Red Eye From Your Digital Photos
How to avoid red eyes from the very beginning and secondly how to get rid of them if it does happen?
The best thing is to avoid the flash to reflect from the eyes from the very beginning. Red-eye reduction works by having the flash shine a light into the eyes of the subject just prior to the flash/shutter event. This serves to cause the irises in the subject's eyes to narrow down. The result of this is a smaller opening into the eye for a camera's eye view of the blood filled retina. Obviously, this would work only if the subject is actually looking at the flash for the pre-light. Children (or so the theory goes) don't look where you want them to. ( try wedding photography with small children in the party).
Other factors affecting red-eye are the level of ambient light and how close the flash is to the lens. The brighter the ambient light, the fewer red-eyes, all other things being equal. The farther from the flash is from the lens, the fewer red-eyes, all other things being equal. There is another very important factor to red eye - possibly the most important one. You will not get red eye if the ambient light is fairly high. You will get it if the room is dark. So maybe you are shooting in rooms with good lighting.
The best red-eye reduction is an external flash. The flash needs to be off-axis from the lens, by "enough". If you used an internal flash and got reflections from the eye which caused "Red Eye's" on your photo, how to get rid of it? If you can include some nearby light, it may not be enough to warrant switching flash off, but it may close down your subjects' irises enough to cure the red eye. This tutorials might be a good help.
I quote below some comments, I came across, about this subject from several newsgroups.
Have you updated your image software to Photoshop CS2 or CS3, you then have inside the program itself, a much simpler tool to get rid of red eyes than what this tutorial offers. However, now and then, you still might need to use this technique. In one image, when I used this Photoshop tool, not only the eye got blue but half the face also.
If it now has happened and you have i.e. Photoshop you have all the tools needed to change the colours from red to the original colours. There are several methods and here is one! Maybe not the fastest but the one which keeps structure of the pupil, and the white light reflexes in the eye intact. If one can say so?
1. Open the channel palette and look for the best pupil
(in this case the darkest).Most likely it will be the
Green channel. Definitely not the red channel in this
2. Use the elliptical marquee tool from the toolbox to select one of the pupils. Hold down the Shift to select the second pupil according to the picture just below.
3.With the elliptical marquee tool selected select now
Anti-aliased in the Marquee Options palette to define a
smooth edge. Enter value 1 for the Feather Radius value
to softening the edges of the selection.
Tips: Save the selection (by clicking on the save selection icon in the channel palette) as an alpha-channel. If you later on want to adjust something it is very easy to activate it again.)
4. Copy now the selected pupils when you are in the green channel only. With the selections still active, click on the red channel and choose Edit > Paste into, from the top main menu of Photoshop. What we do is that we copy the " good" pupil from the green channel into the "bad" one in the red. channel
5.Activate now the blue channel and repeat the command
6. Click now on the RGB-channel. Like magic! Or what do you think?
There are many methods and opinions about which are the
best methods. I quote some opinions from some
newsgroups during the last months.
A free action for Red Eye removal from fredmiranda.com, can be downloaded here. For PC and for For Mac. Have tried it myself and it works fine on the image above.The action should work on either individual images or in batch mode. If you have a PC, copy it into your Photoshop Action folder ( Adobe--> Photoshop--> Presets--> Photoshop Actions)