The other day, Jason (@beatlejase) and I were talking about his stash of 60’s/70’s era lenses he had laying around. In a photo I think he has the same old Pentax I do. So I went home, dug out my K-Mount to EOS lens adapter and through this lens on my T2i:
Konica 40mm f/1.8 70’s vintage I’d guess . I think it really needs a 2x extender to be functional in the real world. This was graded in First Light.