After a first failed copy at trigger, returned and refunded, the second copy works properly? Only (small) reserves on this new issue: the button AFL / AEL slightly too "pressed" into the slot which, suddenly that the action of this command is a little "late" that the control housing itself. In short, the fitting accuracy of the components and the tolerances are probably lower than the Nikon grip, but for the price, the machine does the job and provides a real gain in stability, particularly in vertical shooting.
