In a post dateline eight days ago, Phoblographer publisher Chris Gampat explains “What You Should Know Before Buying a 135mm Lens“. He describes my favorite Prime focal length: “a magical wonder for many photographers”; “optically speaking, no one looks bad on the other end of this lens”; “notoriously hard to get in focus”; and “render[s] super tight if you don’t have a lot of room”. Also calling 135mm a “pain”, he acknowledges: “I’ll admit they can create beautiful photos”.
If shooting an interchangeable lens camera, rather than fixed-28mm Leica Q2, I absolutely would favor 135mm. Honestly, I might go 85mm for close spaces but otherwise mainly use the longer focal length. I love 135mm.