The functionality is quite ok One can throw objects or leaves quite well to the wall. The software, though at a level somewhere between alpha and beta version and offers little comfort for further processing or image processing. Disturbing is also the constant screen refresh, which when using other software detrimental (flickering). For the specific use in the classroom as an OHP spare the simultaneous use of a Smart Boardes etc. I would strongly recommend good lighting next to the camera. The normal ceiling lighting is not sufficient, since one obtains dark beige big grain Worksheets that are hardly Lebar. Conclusion: For the price reasonably ok, but absolutely light mitanbringen! (There are few alternatives for the price?)
