EzFoto Canon EOS EF mount lens to Sony E-Mount NEX NEX-3 NEX-5 NEX-C3 NEX-5N NEX-7 NEX-VG10 camera adapter, w/build-in aperture version Profesional designed Canon EOS mount lens to Sony NEX E-Mount adapter ring. Made of aluminum (camera body mount) anodized black, and brass (lens mount) chromed silver. With Build in Aperture control, It is a solution of using Canon EF lenses to adjust aperture in other cameras with external aperture ring. For bottom difference of Canon EF lens, this adapter doesn't compatible for Canon EF S lens, such as: EF S 10-22mm; EF S 15-85mm; EF S 17-55mm; EF S 17-85mm; EF S 18-55mm; EF S 18-135mm; EF S 18-200mm; EF S 55-250mm; EF S 60mm We suggest Customers to rotate the ring from 1 to 6 to adjust the aperture ring in the adapter, if the position beyond 6, maybe dark area will be caused in the photos, for the reason that the aperture ring stay at the position is too small. Fits Sony E-Mount NEX NEX-3 NEX-5 NEX-C3 NEX-5N NEX-7 NEX-VG10 camera