> > My impression is that this is being cause (at least in > part) by the filter I > > am using. When I purchase my camera I asked for Heliopan > multicoated UV > > filters for both lenses. Seriously speaking, would cheaper coating cause vignetting? If so then wouldn't no coating at all (or no filter) cause even more vignetting? Are you using the slim or super-slim filters designed for wide angle lenses or are you using the regular, thicker filters? Greg
