Basically, the cameras are watching each other’s back so that neither camera can be disabled without the perpetrator being seen. Two cameras are installed on the same wall, separated by 15-20 feet and aimed towards each other. This design eliminates the blind spots that can occur when using one camera mid wall. Because of this, a 2.8mm lens should be used for up close applications - such as a porch or any location where you desire a very wide angle view but do not require great detail at distance. Still, with such a wide viewing angle, do not expect great clarity beyond 40 feet (there is a warping or bubble effect past 40 feet). We do not recommend using any lens wider than a 2.8mm, which provides a viewing angle of 110 degrees. There are 180 degree cameras on the market but they distort the video so badly that the video is useless at distance. A 3.6mm lens provides the widest viewing angle without distorting the image. This location can be useful for certain applications but is seldom used by security professionals, simply because it creates a blind spot on each side of the camera. Mounting a camera mid wall and adjusting its view perpendicular to the wall. Your application will dictate which design is most effective. Each has benefits and possibly some draw backs. So where should you locate your security cameras?īelow are a few of the most common viewing patterns.
0 kommentar(er)
