presenter for teaching

The camera of IPEVO Ziggi USB Presenters meets my needs well: resolution, color performance, brightness and sharpness in my view is good to very good. The autofocus is stable and can be triggered manually. The simple quick-start software controlled dependent on the resolution of full screen mode, in use recently on Windows 8 before Windows 7. It is also insensitive to and disconnect. Without microphone, I do not need and so uses less power from the battery. About screenshots or videos, I can say little because I have this little hand. In lessons I need the presenter to all "usual" front with pens and other pens Mathematical to work together or to solve problems. The class followed place on an overhead projector or on the blackboard, the "thing" in the projector. Note the quality of the projector is also decisive for the quality of the projection image (actually clear, but we have in the school building about 5 different projector types and there are rooms that are not suitable at present for this Presenter) - A laudatory mention should be environmentally friendly packaging!