What cameras are commonly used in the field of security monitoring
For general intersectionmonitoring, due to the large space and high definition requirements, the medium distance focal length lens is suitable for 6mm to 60mm.
Finally, it is used in highway, state road, river, airport, have a large demand of monitoring such as forest, in these conditions, scope of monitoring is the main characteristic of these environments, so generally equipped with 10 mm to 1100 mm lens to meet demand.
In the camera lens used for the surveillance of city security, the remote zoom lens is basically allocated between 10mm and 120mm, because the monitoring distance is different from the environment.
Goal in monitoring the indoor environment, tend to give priority to with small monitoring, which requires the focal length lens of relatively close configuration, or too much focus not only on visual clear no ascension, but also can cause for not on coke and the situation of the "weak". In general meeting room, office, in the monitoring environment of the elevator, the short distance fixed focus lens from 3mm to 12mm can satisfy the demand.
