For those not aware, this is a very unusual and very useful lens conversion.
Somewhere there is an inventive tech with a smile on their face.
They did the impossible, converting a Pentacon Six aka Praktisix lens to Hasselblad V.
Here its mounted on a Hasselblad 205TCC (with a focal plane shutter).
No auto diaphragm, but there is infinity focusing.
You can check out the large Pentacon Six lens system at PentaconSix.com.
So, not only can the 180mm F2.8 Zeiss Olympic Sonnar pictured above be converted, but probably all the other Pentacon Six lenses as well.
The mystery? Who did the conversion?

