Last year I discovered the fun of scrolling through Facebook Marketplace for bargains (aka stuff I don't space or a need, but are too much of a bargain to deny). I've managed to only pick up three things so far: a Canon CanoScan 8800 (a replacement for my aging Epson Perfection 2450), Nikon 85mm f/1.8S, and a Canon 55mm f/1.2 FL that came with a Canon FT QL body. The lens is a lovely piece of metal and glass, comparable to my Nikon 55mm f/1.2 (surprisingly, I haven't written about this lens on this blog).
I've had minimal experience with the lens so far, but from what I've seen, it has the same image quality as the Nikon: lots of veiling flare when shot wide open, but gains enough contrast by f/2. Sadly I forgot to bring it along to test it out with the Christmas lights, but I'm pretty sure it's going to have similar coma issues as the Nikon since they're from the same generation.
