... , 1/4' SONY Super HAD CCD II, 480TVL, 27x Optical zoom, 10x Digital zoom, Color:0.5Lux, B/W:0.05Lux, DC12V IR distance ... CCD IIHorizontal Resolution420TVL480TVLS/N Ratio>52dBOptical Zoom22X Optical Zoom10X Digital Zoom27X Optical Zoom10X Digital ZoomLensF=3.9~85.8mmF=3.6~97 ...