Is the slimmer XS-PRO required to avoid vignetting for the EF-S 10-22mm? I have read differing opinions on the topic. Most agree that a standard CPL will vignette, but the standard UV will not.


Per the B+W site, a standard CPL is 8mm thick, a slim CPL is 5mm thick. The F-Pro UV is 5 mm thick, and the XS-PRO UV filter is only 3.4 mm thick.


When I finally buy the 10-22, I'd like to know which filter to put with it. I was planning to move my Hoya HMC from my 70-200 2.8 IS to the new 10-22, and buying a B+W for the 70-200. Depending on the answers, I may have to change that. Back when I bought the filters, the XS-PRO was not available. I really like the idea of a slim filter with front threads!


I also have a B+W Kasseman slim CPL, which is fantastic optically. My complaint about it mimics many others: that the lack of front threads negates a standard lens cap, and the friction fit cap that is provided with the filter falls off constantly.