Optical Zoom Calculator
This PTZ camera optical zoom calculator can be used to determine the video image created by a PTZ camera when zoomed in at various lengths. The calculator uses PTZOptics 12X, 20X and 30X lenses to create the height and width of your image in real life. You can use the slider bar at the top of this tool to choose the length at which your subject will be from the camera. Using this information the calculator will tell you the space that your PTZ camera will be able to capture when fully zoomed in and fully zoomed out.