Monitor knowledge! 1.2 m × 20 meters of the corridor with a large angle of the camera the best?
1.2 m × 20 meters corridor with 6mm and above the best number of mm, 3 m × 5 m of the room with the best 3.6. And then according to whether it is necessary to night vision function, choose the camera is not on behalf of the infrared function!
Corridor 20 meters if it is a single exit with a camera on it, if there are multiple exports on the need to add, the hemisphere and the bolt can be, the lens point of view, to see how far to see, installed 3.6MM lens to see 3 meters Is the best effect, the wide angle of the lens can cover 1.2 meters range, the proposed installation of 6MM lens or 4MM lens, from the 6-10 meters to see the best results, covering the range of 50 ° -60 °
According to my experience, the first with 6mm lens, the second with 3.6 or 4mm lens is better.
