Do you have any lenses which have bigger diameter or do you plan on getting any of them?


You can buy the largest filter size required according to your line up and use downsize rings to match each size. If you're looking at a Hoya Pro1D. Do check out the new Hoya HD filters. The new HD hardened filters are much stronger than normal and the CPL is tend to cost less F stops - which most time is a good thing.


btw, which lens are you going to use you filter on? A thin filter only shines on wide angle lenses as vignette will be reduced. On telephoto (i.g. 70-200/4L IS) it does not make too much (in fact, any) difference when using a thin filter or a regular.