I'm just into setting up a system and I have a 3MP camera.
The camera has a fixed 3.6mm lens, but I have mixed results when changing the resolution I get the widest coverage at full 3MP, but as I lower the resolution I loose a bit off the top bottom of the picture, I can understand this in 1080p or 720p as these are 16:9, but I still loose a little at 1.3M.
Sorry if it seems a newbie question, I'm just wondering what are the best settings to use in the NVR (3TB drive, hoping to run 4/5 cameras).