In article <4pfsdn$76m@cello.hpl.hp.com>, jacobson@cello.hpl.hp.com says...
[most deleted...]

>Filtering out UV is actually a benefit, as UV in the scene is not seen
>by the eye, but can be seen by the film, causing the image to not be
>recorded as seen by the eye. It is purported, for example, that the
>light scattered by haze is very rich in UV, so you can sometimes see
>worse haze in the picture that you saw with your eye. Using a UV
>filter brings it down to what the eye saw. For this reason UV filters
>are sometimes called "haze" filters.

Hmmmm..... I was under the impression that most lenses themselves will
not pass most UV, so the UV filtering function of any filter used with
most lenses is pretty much redundant, and there will be no advantage detectable in the film image from having used one. They work well as
nearly colorless lens protectors, though..... (and I do use them on
all my lenses that will accept them).
Hope This Helps