Tried that Zeiss Wide Angle 35mm f/2.8 C Biogon T* ZM with the Fotodiox adapter on the Canon, however,it was a false advertisement, while the lens can be mounted on the 1DS2 but it won't allow infinity focus, therefore no picture from that combo but just a picture of the lens instead. Now I am looking for a M9 so I can play with the lens. LOL.