What is the vertical angle of a camera ?

Hi everyone !

I am trying to control the movement of my camera in a sidescroller game. So to limit the camera down in the vertical axis, I have to know the vertical angle of the camera. This is not the FOV because it only apply to the horizontal angle of the camera.
So if someone know what angle is this please, let me know, because I don’t think this is possible to modify it in the camera settings.

Thank you for helping me !

No one knows what is the answer ?

FOV+AspectRatio mb?