I learned that eBay member “jieying-usa” is modifying the mounts of third-party lenses in order to fit on Sony NEX cameras without any need for adapters. Every month he posts strange unknown and sometimes really curious items. You might want to check out the list of lenses he is offering. An example? He made the Kowa 55mm f/1.0 with E-mount you can find on eBay and the Kodak Ektar 44mm f/3.5 (pictured above).
Click here to see the jieying-usa eBay page.