The formula for determining Field of View Using any Infrared Camera

Posted by Martin Robinson on 9/10/15 9:48 AM

Every infrared camera defines its Field of View (FOV) across a horizontal/vertical axis.

You have two ways to determine the Field of View (FOV) on your camera:

  1. You can calculate the FOV using the formula: 2 x the tangent of ½ the angle x distance
  2. You can measure (and “map out”) the practical FOV with a quick field test to check your math!

The practical FOV test is quick, relatively easy, and in no way requires a scientific calculator!

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Topics: Infrared Windows, Thermography, IR Cameras, Field of View

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