Zoom Magnification Value Calculation

The on-screen magnification is dependent on the monitor resolution, camera sensor, and zoom lens.

Example of the calculation done to find the on-screen magnification values:

Note that these are example numbers and not necessarily real values.

• Camera sensor size: 0.25 in. (does not vary)

• Camera window diagonal display is 10 in. (could vary by monitor)

• Zoom lens lowest mag: 0.5x. (calculated during the optics calibration and varies by zoom)

To get the on-screen magnification first calculate the multiplying factor to get from the 0.25 in sensor to the 10 inch display, 10/0.25 = 40. 

Use the multiplying factor (40) and multiply that by the lowest lens mag of 0.5 to get an onscreen magnification of 20x.

Changing the camera display size will change the on-screen magnification values but the field of view will remain the same. The field of view only changes when the zoom stop is changed from the drop-down menu.

Example:

The camera display size increases to 20 in.  The multiplying factor is now 80 (20in/ 0.25 in = 80) 

80 multiplied by the lowest lens mag of 0.5 equals an on-screen magnification of 40x for the same field of view but at a display of 20 in.