Koolertron Auto Focus EOS-NEX EF-EMOUNT FX for Canon EOS EF-S Lens to Sony E Mount NEX A7 A7R Full Frame Auto-focus function; Aperture exactly being adjusted via the mount adapter; Built-in hand-shaking IS function; Full-frame adapter aperture hole design, perfectly support Sony full-frame camera A7/A7R; Zinc alloy core makes the adapter strong and powerful;