Hi,
there is no zoom in VR, the zoom should be related to the real fov.
When using
MobileVR it would be possible to change the headset fov (= ~zoom) via the
mobilevr_lens_fov setting, but for real VR headsets using the WebVR API (like the Oculus Rift, HTC Vive and GearVR) there is no possibility in the API to change the fov/zoom.
Best regards,
Klaus