Auto Zoom-in

I have heard that some security cameras don't record details very well when filming the whole room, which is somewhat obvious. Unfortunately, if the camera were mounted at face-level, the perpetrator would potentially notice it, and try to duck under it or kill it.

Enter the motion-triggered zoom camera. It looks like an ordinary ceiling mounted camera, but if the camera is filming an unoccupied area, and someone walks in, the camera has an optical zoom that will automatically zoom in on the person, capturing more details and leading to a better chance of apprehending him/her. (if he/she actually did something illegal)

As an added bonus, maybe their could be more cameras that come out of secret panels in the wall when the room is busier. Then, when ever the room is not occupied (like when the school, store, arcade or whatever is closed) the cameras retract back into the wall, and a sliding panel closes, leaving only the ceiling mounted "dome" cameras. (the auto-zoom ones) This would counteract the problem of all the cameras zooming in on everyone and whipping around, wearing out the gears. Or, the zoom function could simply disable itself during "busy times"