Choosing between varifocal and fixed focal lens is one of the most fundamental decisions in video surveillance.
With a fixed focal lens, the Field of View (FoV) of the camera can not be changed unless the lens is changed. By contrast, varifocal lenses allow for immediate adjustment of the FoV simply by adjusting a control of the lens / camera.
But which one is used more and why?
Inside, our exclusive integrator survey results answer these questions.