The OP talked about P6x7... worth noting that one of the claimed improvements in the 67II is better mirror damping. Maybe they learned a few things about that when designing the Pentax 645, as that camera was proved by Luminous Landscape to have no perceptible difference whether the mirror was locked up vs allowed to flap (on the the 645NII model which added the MLU feature on popular demand). 
Thardy
Veteran
Handholding Med Format cameras.
I'd been using a Rollei 6008I for years handheld. A couple of years ago I bought a Hasselblad 501 CM, and was a little disappointed with it's output until I used it on a tripod with MLU and cable release.
The Rollei seems to have much better damping of internal vibrations compared to a Hasselblad.
I haven't used my RZ enough to really form any hard opinions except that I don't think I have a tripod that will adequately support its weight.
I'd been using a Rollei 6008I for years handheld. A couple of years ago I bought a Hasselblad 501 CM, and was a little disappointed with it's output until I used it on a tripod with MLU and cable release.
The Rollei seems to have much better damping of internal vibrations compared to a Hasselblad.
I haven't used my RZ enough to really form any hard opinions except that I don't think I have a tripod that will adequately support its weight.
venchka
Veteran
A friend found a bayonet 60 to 67mm adapter for me yesterday. Now I can get a hood on the CFE 80mm Planar. I also have the borrowed 150mm Sonnar. I'm all set for a fabulous fall weekend in the country.