Bought a new copy of this 28/1.5. Results were disappointing for my uses. Extremely sharp in the center of the 24x36 frame. Heavy axial CA that I cannot deal with. Might work Ok if shooting B&W. Cannot deliver an infinity focus (distant landscape view) shot that is acceptably sharp from side to side at any aperture. This could be curvature of field, so with centrally located subjects it may not matter. I'll post example shots if anyone wishes, but they're boring test shots. I'll wait to see if the recently announced VM 28/2 Apo Lanthar is eventually made available for Z mount.
