One of the most appealing aspects of small mirrorless cameras like the Sony NEX cameras is the availability of a wide range of interchangeable lenses, including non-Sony lenses. This NIPON ABANEXEOS Adapter for Canon EOS Lens to Sony NEX Camera makes it possible to mount a Canon EF lens to your NEX-3, NEX-5 or NEX-7 camera with a precision mechanical adapter. This adapter has an aperture, which offers manual adjustment of exposure. This adapter does not transfer functions such as auto focus from the camera to the lens, so all lens operations (focus, aperture control) are manual.