IFOV Calculator

Instantaneous field of view or (IFOV) is an important calculation in determining how much a single detector pixel can see in terms of field of view (FOV). To determine the IFOV, please use one of these two common methods below.

Method 1: IFOV=Detector Element Size/Camera Focal Length


Method 2: The second method IFOV=FOV/number of pixels in the direction of the FOV multiplied by [(3.14/180)(1,000)], where multiplying by [3.14/180)(1,000)] converts to mRad

There is a value for IFOV in the X direction and the Y direction. Be sure to use the FOV for the X direction and the pixel elements value for the X direction to get the appropriate IFOV in the X direction. Use the same method if calculating for the Y direction.