The larger the number of lines, the better resolution and picture quality you can expect. If you will use the security camera in places with poor light conditions, then you should choose the B/W chip cameras that produce better light sensitivity and greater resolution. Security camera systems are categorized into different types. Types of Professional Grade Security CamerasThis type of security camera has box type body that can use different sizes and types of lenses. This enables monitoring objects in any distance. This is ideal for indoor use, but is also recommended for outdoor as long as it has weatherproof housing.