I'm one sample of black Z fc short at present, as it decided to go AWOL on my last trip. Perhaps just mislaid and as I have reported it missing, there is a fair chance of getting it back (such things have happened before ....). If it's stolen, I got the serial number. Oh well. Grays of Westminster UK "donated" me another black copy in exchange for some £££ and the new camera arrived within 24 hours from UK to my digs. Not bad considering that a letter from Oslo to my home, about 40km away, usually takes 3 days -- at least.
I took the opportunity of checking that my new "X-ray" adapter for Z fc/Zf worked, which it did, and made a direct comparison betwwen Rodenstock TV-Heligon 50mm f/0.75 and the Voigtländer 50mm f/1 Z. Perhaps a little unfair as the Rodenstock struggle to draw the entire DX frame and and the Voigt is a "full-frame" design. However, such differences can be ignore for many opportunities for which the Rodenstock offers an alternative view.
I checked the Rodenstock did focus to infinity with my bespoke adapter, which it did. Of course so did the Voigt. Then, an early morning scene in the blue hours, as shown below (centre of the frame) provided some food for thoughts. These lens designs are nearly 70 years apart and of course this is clearly manifested, but not in the superior manner one might imagine. The Voigt is approx. 1 stop slower thus has more depth-of-field, if one can talk about "DOF" with any of these über-bright lenses.
Rodenstock left, Voigt to the right. 100% crop straight off the camera. Intermittently, there was a light snow fall which softened the scene. This can be seen on the Voigt image.