I've just plunged into the world of MF digital with the 645z. I bought it exclusively for landscape work and I am VERY impressed at the image quality and the out-of-this-world DR. I thought I would post my most recent pic and compare it with the OOC RAW file which was taken in pretty challenging light conditions (shooting towards the sun with a lot of the scene in shadow). The final TIFF file has hardly any noise in it at all even in the shadow area's that have been recovered. When I initially took the image I thought I was wasting my time with it
Pentax 645z, DA 28-45 @ 29mm f14, 6 sec. LEE little stopper & LEE GND