CCTV Camera That Can Zoom Face of a Suspect. Digital CCTV Cameras has the capability to capture movements but you lose picture quality as you zoom in further, the picture will appear more pixelated hence you can’t see small details from further i.e faces or plate number. CCTV Cameras with varifocal lenses can change the focal length of the lens mechanically. This mechanical changing of the lens gives the cameras with varifocal lenses the ability to zoom. The pictures remain clear as you zoom in optically. A high-optical zoom security camera gives you effective surveillance from long distance. You can see smaller details from farther away (faces, license plates).