Lens Calculator
Calculate your ideal CCTV camera lens setting in seconds with our 'Quick Lens Calc' tool
- Fast & simple to use
- Free Download
- Industry wide settings
- Instantly tell you what to expect
Getting the right lens size and setting is critical to getting the maximum performance from your CCTV system. Pick a wide angle lens and you might lose the detail you require to ID a suspect, pick a narrow lens and you might not get the overall idea of what is happening in an area.
Sign up today HERE for access to this handy FREE resource.
There are a couple of ways of calculating the perfect lens size.
- You can try to work it the hard way with this formula f = c x d/w (see below for how to do this, OR…
- Do it the easy way using our free lens calculator tool.
You don’t have to be a CCTV expert
Simply enter the rough distance between the camera and the subject you wish to capture plus the focal length of the lens you are considering. The handy tool will then give you estimates on the horizontal and vertical distances you can expect to cover with a 1/3” or a 1/4” CCD camera.
How can I calculate what lens I need for my CCTV security camera?
You can do it in two ways.
The old fashioned, time consuming way of using a formula such as this f = c x d/w where f = lens size needed (mm), c = chip width (mm) 1/3” CCD = 4.8mm or 1/4” CCD = 3.2mm, d = distance of object from camera (m) and w = width of view required (m)
If that seems a little too complicated you could always do it the easy way with our Free Lens Calculator tool. Just enter the distance from the camera to the object you want to monitor and the focal length of the lens you’re considering. The tool will instantly tell you what you can expect to capture.
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