Welcome to our CCTV Lens Calculator!

The Lens is a vital part in a CCTV system, it determines the view you will get from the camera.

In general the smaller the lens the wider the field of view and more suitable for general scenes. But if you are focusing your camera on a certain object i.e. car, garage, gate, person. Then you may need to choose a larger lens that gives a narrower field of view and there for providing a "zoomed" in image of the object in question.

If you aren't too sure about any of the choices, click on the [?] and a simple explanation with tips will appear in this space.