Are there any formulas that I can convert from FOV-to-FL and from FL-to-FOV?

I need to match a camera from the Unity game engine to Blender (and vice versa). Unity uses Field Of View and Blender uses Focal Length.

Is this achievable in an easy way?


Just stumbled across this formula:

horizontal field of view = 2 atan(0.5 width / focallength) 

I'm writing a python script now to test it. Hopeful this works.


It would appear that Blender already has the ability to set a camera's FOV directly. Thus I can solve my issue directly and no longer need to convert anything.

  • $\begingroup$ Did you last edit solve your problem? In this case you might add an own answer and accept it. $\endgroup$ – bummi May 11 at 12:27

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