I do not understand the negative comments on this zoom. Having had this gift at Christmas and after seeing the reviews, I wondered if he was not poisoned this gift ... In the end, I am extremely happy! This zoom is just great! I admit I had trouble initially, it just does not work as I want. So I decided to make a new calibration (with the card provided in kinect and without the zoom) and put my kinect a little more height, then again to insert the accessory. I am now very happy. So beware, it does not remain as "precise" as the only kinect, but even with central dance I have no problem. :)
