i already ahve a hasselblad and a mamiya, im looking for a battery independent 6x6 with a pentacon six mount. I really want the hartblei 45mm shift tilt lense and they make adapters for mamiya 645 and contax and pentax but they are all 6x4.5 and i want square. i wish i could adapt these lenses to a hasselblad, either a 200 or 2000 series but nobody has done it, i might try later, anybody got a 200 series hassy to donate? thanks for all the replies.