Difference between 4 mm and 6 mm Hikvision cameras

Different diameters have different uses.

1, the difference between camera 4 mm and 6 mm is that 4 mm is smaller than 6 mm in diameter. Millimeter is the aperture of the lens, and the larger the millimeter, the better. The smaller the lens, the wider the picture, the larger the lens and the narrower the picture.

2.4 mm camera: Among the three cameras mentioned today, the 4 mm camera has the largest wide angle, and can see a wider range. It is more suitable for close-up scenes in the monitoring room, and is often used in doormen's homes, shops, classrooms and other indoor places. 6 mm camera: Seeing farther, it is more suitable for monitoring intersections and villas.