Purchased a Samsung SDS-P5102. Simple to plug in get it up and running. It has 720TVLs. The problem is ......... The point of this system is to identify a person and his actions.....possible license plate numbers. On the box it shows the license plate for aprox 30 feet. I put a plate about 20 feet away and can NOT get and accurate read on the plate. Also at night the night vision just show a bright blob where the plate should be. I stood in front of the camera at the same distance and can not make out any detailed facial features. Think I have it on the highest resolution settings. Anyone have some advice? Thanks in advance.