Yes, an M6 and Summilux, but love the contrast and acutance. He wouldn't say
what he used to dev these, only that it smelled, and cheap as chips Lucky 400 film.
Thinking he might have used a Pyro of some sort.
Anyhoo, his results are my ideal when it comes to processing, be it 35 or 120.
I have Ilford Pan, but find it much too grey and dull.
Rollei Pan 25/EFKE 25 for me, was a much better film.
They have stronger contrast, and are orthopanchromatically sensitised.
Best developed with compensating developers to tame the contrast a bit.