On Fri, 31 Jan 2003 10:52:56 GMT, "Joseph Meehan" <sligojoeSPAM2@hotmail.com> wrote:

> As far as I know most glass does not pass a lot of UV light and that

>includes most glass used in sunglasses. However, the source of this

>information I have seen is related to UV damage done to eyes, photo and art

>work and thing like drapes in the home.

>

> I suspect that much of the longer UV near visible may not be filtered

>out effectively and while the amount and the wave length of the light may

>not cause the damage that concerns the general public, I suspect it is

>enough to have a photographic effect.

>

> That is a project I would like to research and I hope to find the time

>to do both book and practical research. So until then, I can't agree or

>disagree.

Then it is best not to state that UV has an effect

on most photos shot in daylight...;-) I think a simple

2-frame slide-film shooting of a distant scene with

no change except for filter/no-filter is useful (making

sure to use a UV filter with no visible color!!!). I

think you will see both no "haze penetration", and no

"image degradation" under most *common* conditions with

the use of a good-quality colorless UV filter...;-)