In article <4e0q2b$7u0@kadath.zeitgeist.net>, marcus@vestek.com says...

>I was wondering what the consensus is for having a permanemt filter
>on lenses. Some people seem to think that having a UV or skylight on
>all the time is a good idea to protect a lens. My question is how
>does a UV or skylight filter effect pictures, and which one is better
>for an all around permenent filter ?

A good quality UV (like Hoya) generally has little or no effect on
the lens image, and serves as a protector. The skylight will add a
color shift, and unless the skylights on all your lenses are the
same brand and type, they can add different color shifts to your
lenses. It is probably best to stay with UV's.
Hope This Helps