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Lens Calculator

Start Using The Wizard

BigSecurity Cameras Lens Calculator
1. Please enter in Object Distance
2. Then, please enter the Horizontal View Needed
3. Lastly, click the "Calculate" button to display the lens size needed for your needs.

Camera Format: 1/3" 
Object Distance:
Horizontal View Needed: ft.
Focal Length Needed:
*Note: The majority of BigSecurity video cameras are a type of 1/3" CCD image chip, which this calculator was designed for. Please call if your image chip is greater than the standard 1/3" chip.
The correct lens can make all the difference!
  • If you aren't getting the shot you want from your cameras you can move the camera closer or farther to get the shot you want, or you could just change lenses instead.

  • Almost every camera we sell includes a lens (but there are some exceptions). It is normally about a 4mm lens that gives a wide angle of view. To get a closer view just change to a higher number mm lens.

  • If you purchase a new camera we can install your lenses before they ship.