... 3.hybrid video output BE-PT423W/IVS is Intelligent Traffic System with auto PTZ tracking. The full specification:Full D1 resolution ... AF, zoom trigger AF Flicker cancel: Auto Back-light compensation : On/Off AE control : auto, manual, priority mode, bright, EV ... compensation, back-light compensation Gain: Auto/Manual (-3 to 28dB, 2dB steps) White balance: Auto, ATW, Indoor, Outdoor, one-push ...