Automatically adjusts the video quality in low light condition.

Continuously variable numerical values such as voltage, current, etc.(The CCD camera produces analogue video signals.)

The scene angle that a video camera lens can show on the monitor, like Diagonal Angle, Horizontal Angle and Vertical Angle, usually described in degree.

The light gathering area of a lens, controlled by the iris.

Address Resolution Protocol; for mapping an IP address to a physical machine address.

The ratio of the vertical to the horizontal image size; 4:3 is the PAL standard.

A lens designed with a non spherical shape so that it passes more lights or decreases barrel distortion on wide angle lenses.

A decrease or loss in a signal, usually measured in decibels.

Automatically adjusts a color camera's color to maintain white areas.

A diaphragm device in the lens that adjusts to light level changes. The iris diaphragm opens or closes the aperture to control the amount of lights coming through the lens.