This is a simple, non-electronic adaptor that allows you to mount a Canon EF lens onto a Sony NEX E-mount camera. Since the adapter transmits no electronic signal, you will not have control of aperture, autofocus, or image stabilization. In order to adjust aperture, you’ll have to do so on a Canon camera before removing the lens.
Please Note: This adapter will not work with Canon lenses that have electronic controlled manual focus, such as the Canon 85mm f1.2L and Canon 50mm f1.0L.
This adapter provides no electronic communication between the camera and lens. All aperture and focus adjustments must be made manually on the lens itself. The aperture selected will not be displayed on the camera, and it will not show up in the EXIF data.