I'm putting my first dahua into a LPR role. I'm adjusting my settings for nighttime exposure. I'm familiar with digital photography: iris, gain, shutter, etc all make sense. what does "exposure comp" do when the camera is in manual mode, which field is it overriding to adjust the exposure?
if vehicles are not going too fast you can reduce the shutter speed to 1/500 (0 - 2 ms)
it is important to use CBR to read licences plates, with VBR the camera will adjust its bitrate according to the movements in the scene of the image, if nothing happens, the bitrate will drop, if something happens it will increase, if a car arrives quickly the camera will not have time to increase it and you can have a rotten image while your basic setting is good