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 How to select your Security System
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First you need to decide "What do I want to see” It is silly question but an answer will cost you money and cause hours of frustration.
For example, you want to protect your car from vandalized (50ft away) so you think that you need only one camera to cover the yard and to see your car. For this you required 2 cameras. One to see the whole yard you need a camera with a wide-angle lens. This produces a large field of view left to right but at distances beyond around 14 feet you won't be able to identify the vandals face. The proper lens would for the second camera is a 16mm lens. This produces a close up view of the car but only a few feet to the left or right of the car. This simple example gives you an idea of how important it is know what you want to see before you determine the number of cameras.
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