Modify focal distance/image plane withour change FOV (88101)

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1

Hi everybody,

i’ve a question about focal distance and FOV. I know that in Unity is possible to set the FOV that simulate the same effect of changing the focal lenght of the camera.

But i need to do something different.

I need to be able to modify the focal distance without modifing the FOV, and therefore the frustum.

To be clear: with focal distance I mean the distance between the camera and the image plane.

The consequent question is: do you know where is the image plane in Unity? it matches with the near plane? with the far plane? is somewhere in the middle? or there isn’t a image plane at all?

Thank you very much.

Matteo

2

Hello Matteo
I have a sample problem with fov and focal length.
From unity forum I can know focalLength = frustumHeight * 0.5f / Mathf.Tan(fov * 0.5f * Mathf.Rad2Deg)
But I dont know exactly what is frustumHeight in Unity. I know that it is distance between main camera and image plane but I dont know where is the image plane in Unity.
I think you have a same problem with me so if you have a clear solution that please notify me about it.

Kind Regards