Made of black anodized aluminium (camera body mount) and brass silver (lens mount) the KIWIFOTOS LMA-EOS_EM lens mount adapter allows the use of Canon EF lens on the Sony E-Mount NEX Camera Body (NEX3/NEX5/NEXC3/NEX5N/NEX7 etc.). With the adapter your Sony NEX camera will no longer limit to one lens but a variety of Canon EF lenses for great picture quality and more fun. The lens will fit physically, auto-focusing control and camera modes which control exposure by automatically adjusting aperture are not retained, however. Infinite focus is guarantee. Use the lens in the fully manual exposure mode (M), or in the aperture priority (A) mode and select MF assist function to focus accurately (7x or 14x zoom focus).