Have heard the f/2.8 Planar is "outstanding" wide open. As this is where most of my work is going to be, has anyone done resolution tests on the f/3.5 planar or xenotar wide open? Am trying to make a decision on which camera to buy. This seems to be a rare ability among the TLRs, Autocords,Rolliecords,Yashicamats... Thanks for any help.