1/2.7inch Motorized zoom and focus 3mp 2.8-12mm Varifocal security camera lens/HD camera lens The motorized zoom lens, as the expression indicates, is a type of lens capable of attaining a variance in focal length through electrical control. In contrast to traditional manual zoom lenses, electric zoom lenses are more convenient and efficient during operation, and their core working principle resides in precisely governing the combination of lenses inside the lens by virtue of the incorporated micro electric motor, thereby modifying the focal length. The electric zoom lens is capable of adjusting the focal length via remote control to conform to various monitoring circumstances. For instance, the focus of the lens can be modulated by remote control to suit monitored objects at disparate distances, or for prompt zooming and focusing when requisite.