NEX Hasselblad XPan Fuji TX1 Lens Adapter
Sony NEX-5 with Hasselblad XPan 90mm f/4 lens
If you are lucky enough to own a Hasselblad XPan or a Fuji TX system, you can now use those lenses on the NEX E-mount camera system with a new lens adapter. The XPan or TX lenses come in 30mm f/4, 45mm f/4, and 90mm f/4 focal lengths, which translated to 15mm, 24.5mm, and 45mm on the XPan / TX in panorama mode. These would be 45mm, 67.5mm, and 135mm equivalent on the Sony NEX's APS-C sensor.