Bruce and Godfrey: Yes, you are right, it does depend on the lens. I just thought that entire range of view angles of lenses can be divided into three ranges: certainly no vignetting[*], certainly vignetting, and a "grey zone" in between, where it depends on the lens.
In this particular case, I am choosing a CP filter that will go well with a Nikon 18-200 VR that I am trying to buy for my brother (he has a D70). I've been looking at B+W, as I like the quality of the one I've had for some 7 years. But since I don't quite like the problem of the cap that doesn't hold on B+W slim filters, I would prefer a non-slim version if possible... However, I have doubts that even with the 1.5x crop factor, the non-slim version will work at 18 mm focal distance. Even though this is a wrong list for this lens, I'd appreciate anybody's experience with it and polarizers, shared on or off the list. Someone here has mentioned Marumi DHG CP a few months ago as a slim filter that still has a thread on the outside. While I am not sure if this lens coasting is as good as B+W MRC, the first problem is to find who sells these filters. (Does anybody know a good source in the US? - I only found UK-based kauserinternational.com ) Igor --- [*] for all reasonable lenses (maybe except some weird models). On Aug 17, 2007, at 9:25 AM, Igor Roshchin wrote: > What is the widest angle of view for which there is no vignetting > with regular (non-slim) filters? > In particular, I am considering B+W MRC (72mm) CP. > Would the regular (non-slim) version cause vignetting with a lens > at 18mm > on a digital SLR (1.5x crop)? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
