> >Adding a polarizer won't extend the range>either, but at least you could use the >flash's ability to change focal length! >Does anyone have any experience with the >combination polarizer-flash? You cannot >really preview the effects, so setting the >polarizer is a bit of a gamble, but my >guess is it should be possible!
It sounds quite possible, but you actually need to apply cross-polarization: one pol filter on the lens and one pol filter on the flash.
I understand the principle of cross-polarization, but as we don't know what the inside of an eye will do with light that is reflected... In fact I was hoping that this light would alreadby BE polarized :) Then the polarizer in front of the lens would be sufficient.
Be aware that the effect of a polarizer in the skin of people can be very unflattering. It could be that you would enhance subskin features like veins.
Finally, I'll have those X-ray glasses =D Thanks for the tip, I didn't try a polarizer for portraits yet and didn't think it was a great idea before...
You don't have to bounce flash to get rid of red eye. All you need to do is to hold the light up and a little away from the camera. That should do it every time.
Nothing beats a bracket!
Thanks for the reactions and tips sofar! I might give it a try one of these days...
Cheers, Stefan
Cross polarization would not work; that only works on surfaces that provide specular highlights; ie, ones that do not de-polarize light incident upon them. You would lose 3 or 4 stops which in many cases is more than if you reflect the flash off walls or ceilings, but would not reduce redeye.
As mentioned before, light reflected off the retina is non-polarized, so adding a polarizer doesn't help in any way.
Things that help redeye:
1. increasing the angle between the flash and the lens axis with a bracket or holding the flash off-camera
2. using a pre-flash or taking pictures in higher level ambient light
3. taking pictures of older rather than younger people :-)
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