how to know number of tv lines of resolution in a CCTV Security Camera

by kumar vasa
(samalkot,andhra pradesh,india)

Question:

How to know the know the number of TVL in a ccd sensor. Because the vendor says it is 480/540 tvl. Is there any procedure to calculate the TVL?

Answer:

There is not an exact way to measure this that I am aware of.

The main thing will be for you to compare the quality of a couple of different cameras. For instance if you have one camera that is 540 TVL and the resolution seems fine you can compare that to another security camera from a different manufacturer. Then you can see if there is much of a difference.

You will want to check both how the cameras look on your monitor as well as the quality of the recording that you have from each of the cameras.

Really all you can do is an old fashioned shoot out. Like an old western movie with Clint Eastwood. Best shot wins!

Hope that helps.

Peter Brissette
Security Camera Expert