Description: Features: brand new and high quality EF-NEX adapter is able to adapt EF series lens to be used for S-ony NEX E mount camera, which allows you to have more purchasing choices of lens. Full-frame adapter aperture hole design, perfectly supports for S-ony full-frame camera A7/A7R. Greatest conductivity due to gold-plated pins for the signal transmitting. Support for slow auto for focus function, TTL, auto exposure and auto aperture. Comes with anti-shake function,1/4 screw to mount onto the tripod. Supplied with lens release lever to quick release and install. Specifications: Item Type: Adapter Ring Material: Metal Color: Black Size:6.7x3cm Compatible lens: for Ca non EF series lens Compatible cameras: for S ony NEX E Mount Camera (Including for S ony NEX full-frame camera A7/A7R) Front mount: for C for anon EF mount Lens Rear mount: for S ony NEX E mount Camera Package Includes: 1 x Adapter Ring 1 x User Manual(English & Chinese)