Enter the detector element size and the camera focal length into the Calculator. The calculator will evaluate the Instantaneous Field of View.

## Instantaneous Field of View Formula

IFOV = DES / CFL

Variables:

- IFOV is the Instantaneous Field of View ()
- DES is the detector element size
- CFL is the camera focal length

To calculate the Instantaneous Field of View, divide the detector element size by the camera focal length.

## How to Calculate Instantaneous Field of View?

The following steps outline how to calculate the Instantaneous Field of View.

- First, determine the detector element size.
- Next, determine the camera focal length.
- Next, gather the formula from above = IFOV = DES / CFL.
- Finally, calculate the Instantaneous Field of View.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

detector element size = 2.45

camera focal length = 1.5