The IP camera is one of the most important device in the CCTV camera system. It mainly collects the optical signal, converts it into digital signal and then sends to the back-end NVR or VMS. In the whole CCTV camera surveillance system, the choice of IP camera is very important. Selecting the right cameras according to the monitoring demand can achieve video surveillance system’s real value.
Today we're going to talk about the number of millimeters and how many meters you can see a face when choosing Elzoneta IP camera. Firstly, let's look at the picture below:
From the picture above we know, the most used camera’s Lens sizes are: 2.8mm, 4mm, 6mm, and 8mm. The larger the lens, the farther the monitoring distance is; the smaller the lens, the closer the surveillance is.
2.8 mm——5M
4 mm——12M
5 mm——18M
8 mm——24M
Of course, the distance above is the theoretical maximum monitoring distance. However, the monitoring distance you can see a face clearly in the daytime is as follows:
2.8 mm——3M
4 mm——6M
5 mm——9M
8 mm——12M
What is the relationship between the lens size of the surveillance camera and the CCTV monitoring angle?
The monitoring angle refers to the width of the picture that the network camera can catch. The smaller the lens of the camera, the larger the monitoring angle, the larger the screen width, and the wider the field of view of the monitoring screen. Conversely, the larger the lens, the smaller the monitoring angle, the more narrow the picture will be. Now, we know how to select right CCTV IP camera lens according to the distance to see the face.
In addition to the four most used lenses mentioned above, ELZONETA CCTV IP camera also has customized 12mm,16mm, and even 25mm lens, which have fixed focus or auto zoom lens for monitoring in corridors, outdoor roads, open space, specific entrances and exits. Anyway, Elzoneta IP camera can meet the requirements of different monitoring scenarios.
Post time: Dec-05-2022