Field of view
Field of view or FOV is the extent of observable world at any given moment. Field of view is usually measured in degrees. Humans have 180 degrees FOV when looking directly in front and 270 degrees with eye rotation.
In VR, there are two types of FOVs: Display FOV or dFOV and Camera FOV or cFOV.
Display FOV
Display FOV or dFOV is the FOV of your HMD.
While wide dFOV can increase immersion and induce presence, it can cause simulator sickness in certain individuals.[1]
Camera FOV
Camera FOV or cFOV is the FOV of the virtual environment rendered by the graphical engine.
Changing cFOV can lead to unnatural movement of the virtual environment in response to head movements. For example moving your head for 7 degrees in real time creates 11 degrees of movement in VR. This can lead to discomfort.[1]
References
- ↑ 1.0 1.1 https://developer.oculus.com/documentation/intro-vr/latest/concepts/bp_app_simulator_sickness/
