Another important consideration in video cameras is resolution. Resolution is the measure of noticeable detail that you see in an image. The higher the resolution, the better the definition, clarity and quality of the picture. Lower-resolution cameras produce images with less detail.
A high resolution camera could capture the detail of a person’s face or a license plate number from a wide area. The wider the area you want to view, the more resolution you will need in order to see all the detail. If you want to monitor a smaller area and do not need to see a detailed view, a camera with lesser resolution might do. Keep in mind that higher resolution images also mean larger files sizes, which will take up more storage space on your DVR.
How much image clarity and detail do you require? Below, you can compare the various resolutions and the level of detail when zoomed in on the license plate. 480 TVL 540 TVL VGA
