Upload & Sell: On
Brock, be careful. Using all manners of lenses with a NEX is a great idea, including rangefinder lenses that will never work on any DSLR (Leica M, Contax G, Zeiss ZM, certain Voigtländers), plus pretty much all DSLR lenses. But NEX 7 is a very tricky camera when it comes to wide angle lenses. Basically, you can forget any rangefinder lens wider than 35mm, because you are going to get colour shift and really mushy edges and corners. How it accepts DSLR wides I will find out today actually, but the jury is still out. A search on NEX 7 threads will give you much more info than this quickie.
OTOH, you could consider the NEX 5N, a delightful camera in its own right, probably underestimated because of the NEX 7's long shadow. And it accepts all DSLR lenses, plus the vast majority of rangefinders. My personal favorite being the superlative Zeiss ZM 18.