quick question on the nikon 16-85
I use a Nikon CP filter on my 16-85 and am very happy with it. You can get a 67mm one for about $110 from B&H, Adorama, etc. The Hoya Pro-1 would also work well for you and is somewhat less expensive. No matter what you choose, filter quality is of the utmost importance. The 16-85 is a nice lens that will produce excellent quality. Don't compromise its quality with a cheap filter.