Many of us photographers have a penchant for vintage lenses, but this one might top the lot.
The first vintage lens I bought was the "original bokeh monster" 135mm bayonet lens that I adapted to my Canon 6D. It was soft, possibly harboring some fungi, and awkward to use, but it did some damage to me. I suddenly had this burning curiosity to try different film bodies and vintage lenses and while I've tamed it to a certain extent, I'm still drawn in by rare pieces of photographic history.
In this video, Markus Hofstätter — a rather singular photographer on YouTube, restores a 160-year-old Petzval 500mm f/4.5 lens to a usable standard and then shoots a wet plate portrait with it. It's such a beautiful lens, albeit massive and presumably very heavy. The requisite dedication and effort that goes into taking a shot like this is staggering!