The lens of a surveillance camera is vital to any type of monitoring and detection system. The lens controls the visible area of the camera and how detailed, or clear, the viewed object will appear on the video. Thus, a properly selected lens will result in sharp, detailed images, which in turn allow you to detect motion easily and identify fine details. As well, each location of surveillance requires different lenses. Wide lenses for larger areas, and narrower lenses for entry/exit points are examples of how different different lenses perfect according to the surveillance environment thats why the perfect lens on a surveillance camera maximises coverage and minimises blind spots, while ensuring that reliable monitoring of an area occurs either inside or out in the open.