Here is a security camera and light that detects motion to lock on and follow intruders. The NightWatcher SWNW760 by Streetwise has 16 watt COD LEDs to generate 1200 lumens of light. The NightWatcher comes with WiFi connectivity for remote monitoring via a smartphone or tablet. The light head can move left and right 210 degrees.
The NightWatcher SWNW760 can not only follow motion but has audio warnings to scare off intruders. It supports memory cards up to 32 GB.