EverFocus EPTZ100. Analog signal format system: NTSC. Minimum illumination: 0.005 lx, Viewing angle, horizontal: 51.2 °, Viewing angle, vertical: 5.58 °. Sensor type: CCD, Optical sensor size: 1/0.157 mm (1/4 "), Effective sensor resolution: 440000 pixels. Optical zoom: 10 x, Digital zoom: 10 x, Focal length range (f-f): 3.8 - 38 mm. LED type: IR