Each individual camera is assembled with an authentic 1/3" High-resolution Sony Semi Exview HAD CCD image sensor and professional grade video components. This high quality camera offers a resolution of more than 420 TV lines supported by Sony's Semi Exview HAD CCD image sensor. The exview HAD (hole-accumulation diode) CCD dramatically improves light efficiency by including near infrared light regions as a basic structure of HAD (hole-accumulation diode) sensor. In addition to the semi exview HAD, the auto iris control and back light compensation options together bring to you the most comprehensive quality in video surveillance. These features combine to produce the finest picture quality possible in a given setting and environment. The lens mount allows you to customize your camera with the lens of your preference offering you complete control over the area of interest you would like to survey. Even with all these various functions, installation is straightforward and easy for anyone with minimal video surveillance knowledge.