Any views on the sharpest hand held MF set up? I have an Xpan which I use for 35mm - very sharp. I also have a Mamiya RZ system that I use for tripod work. What I'm looking for is something to fill the gap as I sometimes need to print 12x16 or above and the 35mm loses a little when enlarged over this size - especially if the frame is cropped. I need to be able to take it anywhere and use mostly hand held.