This is a great product and is exactly as advertised. It is well made and very high quality. Beware that it does not support all EOS functions as it does not allow for interoperability between the EOS auto functions and CSC cameras. But if you can live with manual focussing and setup (just like they used to do in the old days), you'll be very satisfied. Take care when attaching lenses and locking into camera. The fit is VERY precise and to unlock, remember to press and pull the release button BACK towards the camera. Just pressing it will not do it. Recommended!