I have 15 cameras so though I have an I7 running at 3.6, CPU usage is not my friend so I'm looking for ways to improve. My Sony 3MP cameras have software with them where I can and have set up motion detection areas in the camera, so putting that work in the camera instead of on BI sounds smart to me. Right now on each camera's Trigger tab I have motion sensor checked, and it seems to be working. My questions are (1) is the motion sensing work being done now in the cameras or in BI by the CPU, and (2) what does the third checkbox on the tab labeled "Camera's digital input of motion alarm" cause to happen? I don't see a clear explanation of it in the documentation. Any ideas in utilizing the cameras' smarts to maximize triggering efficiency will be appreciated.