Orthographic size and fov

Hi

I have a perspective camera with an fov of 60.
It looks at an object from top view at a height of (0, 50, 0)

The user has the option to change the camera to orthographic view to get a 2D view without any depth from top

Now how can i set the orthographic size so it looks the same as that in the perspective view?

 

You can change the camera mode to get orthographic view (on the camera), but it's probably easier to set up two cameras and just swap which one is active.

 

In my situation I can only use one camera but I found the solution to it here:

https://answers.unity.com/questions/1638789/top-down-perspective-camera-fov-to-orthographic-si.html

Thank you