If you can find someone who will do it for you, the Pentacon 6 lenses can be machined to be mounted on Pentax 67, which is a relatively reliable camera compared to anything from the eastern bloc. I happened to pick up a Zeiss Jena 180mm Sonnar that had been converted like this and it is one of my finest lenses and I have tried almost all the native Pentax glass, and almost all the western German Hasselblad Zeiss.
Probably the most successful of any of the auto makers when it comes to race wins. They've been even more successful than Ferrari. Le Mans, Indy, F1, you name it and their cars have won it.
My one Pentagon experiment was w/ a w/ Pentagon Six. It had an 80 lens and took killer photos, but I never could get the shutter sorted out on it.
I managed to refrain from buying a Praktisix at the weekend, it was in very nice condition and had been fully serviced. I need to keep downsizing first
Was the Pentagon Six a special US model Carl Zeiss in East Germany had to label their Contax rSLR cameras Pentacon derived from Penta prism and Contax for the West German and US markets. Later when KW and Carl Zeiss merged they used the Pentacon and Praktica brand names for all their cameras. Paktica's had been KW's budget range of SLRs, easier and much cheaper to build than the Praktinas.
Was the Pentagon Six a special US model Carl Zeiss in East Germany had to label their Contax rSLR cameras Pentacon derived from Penta prism and Contax for the West German and US markets.
-) I am not aware of any Pentagon Six model
There is one English user manual of uncertain origin for the Pentacon Six, where in the text the g-form ist used, but not at the camera depicted itself. To me this is a spelling-error.
(In the English service-manual in the text the c-form is used.)
-) The Contax S had to be labelled differently (Pentacon) at all markets where Contax tradenname registrations were claimed by Zeiss-Ikon Stuttgart.
Worth buying for the 30mm fisheye. The second curtain on mine was very thin, so I sprayed it with spray-on electrical insulator. So far, that has worked ok. Eventually, it should go back to Arax to have the shutter properly fixed. But meanwhile, it takes fun photos. The 30mm focuses very close. Recently got a 50mm flek. - haven't developed the photos yet.