The only drawback: The opening of the automatically closing when in contact with the camera plate clamping device, however, requires quite strong hands (two blue "keys" must be pressed shut against spring pressure strong sequential). In the relevant video from the Novoflex looks easier than it is - the demonstrators photographer must have almost a firearms license requiring hands. I on the other hand as an office man .... I would imagine that the clamping device does not insignificant operating problems with cold fingers. However, these criticisms are not sufficient to star reduction.