I am going to buy the Sigma 17-50mm f/2.8 (I was going to get the Nikon 17-55mm but decided against it because of its size and I think the Sigma will be almost as good). I have always bought B&W MRC filters for almost all my other lenses but I am wondering if I should really be using a filter (since I keep a lens cap on the lens unless I am shooting).
Filter or no filter? What do you do and why?
Not counting polarizing or special filters, just everyday UV filters.