Very nice build quality, direct mounted on a D 800, no back / front focus problem (in case, the USB dock, cheap You will stall out MAP) .Photos superb dice the full opening 3 things heavy and very discreet and objective price may seem high, but considering the provision ... compare it to the Otus Zeiss and let your "Gaussian" to 6 or 7 side lenses (This is more of 12 13 lenses), you will not be disappointed ..... only your banker will not find your great photos ....
