Fotodiox Lens Mount Adapter (Type 1), M42 (42MM x 1 Thread Screw) Lens to Sony Alpha NEX E-Mount Camera, Fits Sony NEX-3 and NEX-5 Premium Grade Fotodiox Lens Mount Adapter with Built-in tripod Mount Smooth surface for effortless mount Infinity Focus Allowed Anodized Aluminum Construction 24 Month Manufacture Warranty