TVL Resolution

The resolution of a camera is measured in ‘TVL’.

The term TVL or “TV lines” has been around since the invention of analogue television. Its purpose was to provide a measure with which the usable resolution performance of a TV system could be assessed. TVL is in general terms a horizontal measurement of how fine a detail from a scene can be resolved on a display.

This number relates the resolvable fine detail to an equivalent number of equally spaced black and white vertical lines across the width of the viewing screen.

“The higher the TVL the better quality picture the camera will produce”