An "impossible" shot. Lille, cathedral interior, after an evening concert.
Zf, adapter, Canon FD135/2 wide open. 40,000 ISO. Processed in Lightroom. I also tried with DxO 8.5 but did not like the rendering as much - slightly "plasticky".
The old Canon FD must be about 40 years old now... and it is darn good. It only disappointed on m43 (conspicuous purple fringing wide open, which I never noticed otherwise).