This is my 1971 bought East German 'Pentacon Six' with the Carl Zeiss 'Jena' 80mm f2.8 Biometar and the extension tube set I use for Close-ups. I can get 13 frames from a 120 film and 27 frames from a 220 film ! I do not like the very slow 1/20th flash synch speed though.
Yes -- I still use the camera occasionally and upload to here and Flickr. I have some old ex-RAF lenses I use with adapters including a 1943 Kodak Aero-Ektar 178mm f2.5 lens
Great part of history. I still keep in use my Biometar 2.8/120mm but with digital, do You still take photo with Pentacon Six or even just a Biometar lens? :)