So I recently bought a Sony NEX 5N and I want to adapt older rangefinder lenses to it. The end goal is get a film body to run the lenses on as well. I leaning towards the M mount, mostly because I really like the new Zeiss Ikon as a potential future camera. I've been looking into Voigtlaner lenses and really like what I'm seeing. I want fast glass, f/2 or better, and Summilux is way too expensive for me. So to wrap-up I'm looking for f/2 or faster and not too expensive, preferably M mount but open to other options. Thoughts?