SceneCaptureComponent2D and FOV - calculation rules? Scope for example


I have problem with understanding how to calculate FOV for scope using SceneCaptureComponent2D and render target.

  • I have scope mesh (lens), this is sized like a lens, 1:1.
  • standard game FOV is for now 75
  • I need for example 1,5x magnification

For now, I see ~1.5x magnification I have with FOV on SceneCaptureComponent2D = 2.0 Instead of FOV 50 for example. I can’t find documents how it works and how to calculate different FOV for different lenses same size.

This is depending on lens mesh size? Render Target size?

Thank you ++