Blackwood Outdoors Night Vision Comparison Calculator

Scope A

Enter either f-number or lens diameter (or both).

Scope B

Enter either f-number or lens diameter (or both).

Scope Optics Calculator

Compare the performance of two scopes side by side with this interactive calculator. Simply enter the sensor size, resolution, field of view (FOV), and lens specifications for each scope. The calculator will display:

  • Estimated focal length and pixel size

  • Aperture diameter and f-stop (f/#)

  • Relative sensitivity and a visual rating out of 10

  • A field-of-view graphic showing how each scope “sees” compared to the other

This tool helps you quickly see which scope is more sensitive, and how their FOVs compare, making it easier to choose the best option for your needs.