VILTROX EF-NEX III Electronic Auto Focus Lens Mount Adapter for Canon EF EF-S Lens to Sony E Mount a7R II/a7S/a7R/a7II/ NEX-7/6 Full Frame The Lens Mount Adapter EF-NEX II is designed to allow Canon EF Lens to be used on Sony NEX Mirrorless Cameras. Auto Focus for Sony E mount camera,support the Full Frame camera Tripod socket:Cu 1/4X1 Max.Diameter and Length:66.6X26mm Weight :Approx.125g 1/4" tripod mount adapter is built in the adapter, can be installed or removed easily.