Hello, I've bought this adapter to use 3 Canon FD lenses on my Sony NEX-3N: the classic 50mm f / 1.8, the 100mm f / 2.8 and the 28mm f / 3.5. The adapter comes in a box labeled E57903. Quality is excellent. The lenses and the camera body are bound together by the adapter Firmly: nothing moves. No problem to focus from infinity to small distances. You can settle the aperture by turning a ring on the adapter or the one on the lens. At full aperture, the quality is only average and you need to stop down to get better results. The NEX-3N will take care of the correct exposure in Shutter Priority mode. You only need to focus and chose the Aperture. The manual focus is quite easy with the Zoom That You Can Use at any time. For Such a low price and knowing nothing else can be added to make the FD lenses work better with a Sony NEX, I highly recommend this adapter.