In article <4tl5hv$9dk@svc.slc.uen.org>, david.austin@k12.uen.gen.ut.us says... [......]
> A good UV filter can render an image
>more the way you saw it, that is more natural, and with less haze. Often
>a cleaner, crisper image. Never the less any extra glass will cause a
>certain amount of image degridation. I don't put a UV on my lens and
>leave it there, unless I'm just snap shooting.

Ummm!;-) Most lenses remove virtually all of the UV that a usually
encountered type of UV filter can, so the UV filter has no effect on
the photo in terms of UV. Any good-quality filter has no detectable
negative effect on image quality (except, perhaps, when shooting
directly into the sun with some lenses and non-multicoated
filters), so a good UV filter has no effect
on the photo most of the time.
Hope This Helps