Quote Originally Posted by ricktas View Post
from what?
Mainly dust. I have read the point of view expressed in the link provided by Mark L, and disagree on the dust issue. I would much prefer to be regularly cleaning a throw away filter than my lens.
I am beginning to regret mentioning what sort of filter it was. The question was about cleaning, and I think the type of filter is probably irrelevant. Much of the subsequent discussion on the merits or otherwise of UV filter probably deserves to be in a thread more suitably named.
Anyway, not to worry, just my point of view.

Cheers,
Terry