I'm in the process of trying out this system. I want the 50mm lens but it has a 95mm filter ring. That much larger than the 82mm filters and lee hood system I currently use. Based on experience with my current mf wide angle lenses, I'd like to use a 95mm to 82mm step down ring. There's a lot of space between the filter ring and and the glass itself. Will it work w/o vignetting at f22? Anybody tried it?