How to match Camera field of view to the device camera field of view?

Camera & Cinematics Camera
1

Hi,

I’m having an issue, by using these lines of code:

webCamTexture = new WebCamTexture();
        GetComponent<Renderer>().material.mainTexture = webCamTexture;
        webCamTexture.Play();

I’m displaying the webcam content on a plane (I’m still figuring out how to fit the UVs keep the image with the good camera ratio). In front of the plane I’m manipulating a 3D cube.

My goal here is to match as close as possible the perspective of the device camera (FOV) with the Unity camera one.

I’ve found this: Field of view of a webcam - Photography Stack Exchange
But I’m looking for a more systematic way of calculating that. Is there a way to read the device camera FOV ?

The project is an augmented reality object placer used on Android and IOS. As there are so many android devices I need to find an automatic way to match the two FOV.

I tried to use vuforia’s AR plugin, but the problem is that the perspective is still wrong. And also that Vuforia is overwriting the cam FOV and I can’t prevent that apparently. (Well I’m on their forums aswel for that matter).

2

Hi @BooBi Instead of calculating it, you could simply ask the camera for it. NatCam supports this functionality:

Debug.Log("The camera's FOV is "+ NatCam.ActiveCamera.HorizontalFOV);