Hi Guys!
I know this may seem like a dumb question. The Rift is supposed to have 110 degrees of diagonal FOV. What FOV should a game have to match up with this?
I thought it was 110 degrees, but some are saying 90. Is there a correct figure?
Regards,
Neil
FOV Preference
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Neil
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Re: FOV Preference
The FOV depends on several varying parameters, especially the type of eyecups (A, B or C) and the distance between the eyes and the lenses (and the IPD to a lesser extent). At this time I don't think anyone has been able to correctly calculate the real FOV for a particular configuration since the second parameter can't be precisely measured (confirmed by someone from Oculus VR).
You can still see the calculated vertical FOV in the Oculus World demo for a specific configuration by pressing the Spacebar twice (or get it through the StereoConfig utility class in the Oculus SDK). Default values seem to be 114.5° horizontal and 125.5° vertical (with A eyecups I suppose) according to this post.
Looking at the TriDef release notes (see Game notes) it seems they don't have a definitive answer either since they recommend different FOV settings for each game (from 80° to 125°). VorpX recommends a FOV around ~90°.
So until Oculus VR (or someone else) is able to provide a definitive way to calculate the FOV I guess the best thing to do would be to let the user find what works best for him using some trial & error. Some default values could be recommended based on internal testing for the different eyecups and several eye-to-lenses settings (the knobs on the sides of the HMD).
You can still see the calculated vertical FOV in the Oculus World demo for a specific configuration by pressing the Spacebar twice (or get it through the StereoConfig utility class in the Oculus SDK). Default values seem to be 114.5° horizontal and 125.5° vertical (with A eyecups I suppose) according to this post.
Looking at the TriDef release notes (see Game notes) it seems they don't have a definitive answer either since they recommend different FOV settings for each game (from 80° to 125°). VorpX recommends a FOV around ~90°.
So until Oculus VR (or someone else) is able to provide a definitive way to calculate the FOV I guess the best thing to do would be to let the user find what works best for him using some trial & error. Some default values could be recommended based on internal testing for the different eyecups and several eye-to-lenses settings (the knobs on the sides of the HMD).