Fixed aperture lens: fixed focus and fixed aperture, mainly used in places where ambient light is fixed;


Manual aperture lens: fixed focus but adjustable aperture, mainly used in places with fixed ambient light but uncertain light and shade;


Automatic aperture lens: fixed focal length, DC voltage drive, used in the fixed range of environmental light variability;


Automatic aperture lens: fixed focal length, driven by video signal, used in fixed range places with variable ambient light;


Manual aperture zoom lens: it is mainly used in indoor environment where the light level is uncertain and the range is different;


Automatic aperture zoom lens: it is mainly used in outdoor environment where the light level is uncertain and the range is different;


On board lens: mainly equipped with infrared camera, suitable for indoor and outdoor use;


Fisheye panoramic lens: it is mainly used in the places where the light level of indoor environment is uncertain and the scope is specific;


Electric zoom lens: it can remotely control the focal length, depth of field and aperture. It is mainly used in places where the light level of indoor and outdoor environment is uncertain and the depth of field range can be adjusted according to requirements;


Pin hole: it is mainly used for hiding monitoring and places with uncertain and specific range of ambient light.