I recently ran into a 240mm with 86mm filter threads. The biggest filters i carry are the b+w 82mm so i purchased a step down ring. Has anyone tried this?
I can't see vignetting on the corners of my 8x10 ground glass and i don't know if i'll have time to test for it before my trip. The B+W filters are pretty thin compared to tiffen's and hoyas. Should i expect vignetting on chromes? If so, at what aperture? I say chromes because it's sometimes hard to tell on black n white negs unless you make a print.