Visualisers

Last teaching practice I attended an INSET about visualisers. My first impression was that it looked like an updated overhead projector but it I found it is so much more than that! It has a variety of functions and it can be connected to your interactive white board. It can be used as a video camera, to show childrens work on the big screen, to zoom in detail on 3d objects and it also has a freeze button among many others! We found it was fun to use and I felt it would enhance lessons by widening the variety of activites you could do, the resources you could use and it could also increase efficiency and make lessons more engaging. The downside is that the visualisers are still expensive. I havent seen anyone use a visualiser in the classroom yet. has anyone seem one in action? If so what did you think of it?