Fotodiox Vizelex ND Throttle Auto Adapter, Canon EOS EF (NOT EF-S) Lens to Sony Alpha NEX APS-C E-Mount Camera Premium Grade Fotodiox "Pro" Adapter, Infinity Focus Guaranteed Built-In 8-Stop Variable ND Filter ND2 - ND256 (1 - 8 Stops) Only Canon-branded lenses introduced in or after 2006 are officially supported. Autofocus may be disabled for older Canon lenses and most third-party lenses, including most Sigma, Tamron and Tokina lenses and all Contax N lenses modified by Conurus All-Metal Design; Brass with Stainless Steel Finishing and a Removable Tripod Mount 24-Month Manufacturer Warranty