I had advance ordered my NEX 7, but have been buying adapters to use my treasure trove of older legacy MF lenses (I'm 74 yrs old, and have been into this seriously since 1959 when I built my first darkroom). I purchased the M42, Leica R, Nikon F, Leica M,
Contax/Yashika, and Topcon/Ekakta to NEX adapters. I have a beautiful Contax 28mm T* f2.8, Leica 35mm f2.8 Elmarit R, 50mm f2 Sumicron R, Nikon 28mm f3.5, 50mm f2, 135mm f2.8, Pristine Topcon 50mm f1.4, 28mm f2.8, 100mm f2.8 (a tiny little jewel), and 135mm f2.8 with beautiful telescoping hood. Also some really old Exakata lenses: 50mm f2.8 Tessar, and 135mm f 2.8 Steinheil Munchen Auto-Quinar (this is a monstor heavy lens with giant clip on hood). Also M42 Asahi Takumar 24, 28, & 50mm f1.4, along with very early "Auto-Takumars" (actually semi-auto, you must cock open the diaphragm after every shot): 35mm f3.2, 50mm f1.8 and 105mm f2.8. Still waiting for the NEX 7 to be delivered from the Sony Store.
Good luck to all.
Dave in NJ