Originally Posted by t.mauery
I have noticed vignetting (especially on shorter focal lengths) when using a CP filter over a UV filter on my 18-55 kit lens. I have the cheap (non-HMC) Hoya filters.
Some or all of the vignetting can be alleviated by using PRO series filters that have much thinner bands. Unfortunately, the PRO filters are much more expensive and if I recall they do have much more multi coating in some cases.
Stephen