Originally posted by thibs A pity the 120mm isn't available for Pentax 645, that would be a very welcome addition IMO.
For $6000US?
Think of this setup: Hasselblad/Carl Zeiss CF Makro-Planar 120mm F4 ... said to be one of the best in that range.... can be had used for $1K.
Then, get a Zörk Pro Shift Adapter and a Multi Focus System. The two together will run you another $1K.
Zork
Then you can mount the Makro-Planar on your 645D.
Perhaprs the Apo-Digitar will have better IQ (it being APO should help a lot). But would it justify the $4,000US difference? I seriously doubt it.
[EDIT] I just realized that with the small difference between 645 and 6x6, there's a good chance that movements will be much more limited with the above setup than with the Schneider, which will at least do 8˚ tilt and 12mm shift. Still, there will probably be large format lenses with much bigger image circles that will fit the bill, and of course Pentax 67 lenses aren't too shabby, either[/EDIT]