The Sigma MC-11 (EF to E-mount) adapter enables Canon EF-mount and Sigma EOS-mount lenses to be used on Sony E-mount cameras, maintaining full autofocus, auto-exposure, and in-camera stabilization. It is optimized for Sigma Global Vision (SGV) lenses, offering fast AF, but also supports Canon EF lenses, including Phase Detection AF and Eye AF on compatible Sony bodies.