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Comment by deletes | Hacker News Reader

Oculus Rift FOV is 110°.

DK1 is ~110° diagonal, 90° horizontal, roughly equivalent (and varies a fair amount w/ the lenses you use).

For comparison, the HMZs OP references are a HFOV of about 45°.

The field of view on the first Rift Development Kit is difficult to quantify because it varies depending on the eye relief from the lens to the specific user's eye. This is part of why there is a visual calibration procedure for the kit.

In any case, the field of view on that hardware is generally lens limited and the lenses are round, so the monocular field of view for most users is circular. The diagonal field of view is then equal to the vertical and horizontal field of view.

Not quite: for each eye, the screen aspect ratio is 8:9--not perfectly square and you can see in oculus videos on youtube that the distortion shader uses a scaling factor to make the screen just touch the left and right edges, but the top and bottom get somewhat cropped.

The diagonal is a bigger FOV than the horizontal FOV simply for that reason.

Most people can't see the edges of the screen when looking directly at them in the rift (but they can when looking indirectly, it is something to do with the eyeball moving around leaving the sweet spot).

Is there public data/or a spreadsheet/simulator for eye/relief:fov (I assume data for the A-C cups aren't relevant anymore) and accounting for binocular overlap?

Also is there technical documentation on the prewarp shader and pixel density/perceived resolution? I'm interested particularly in text rendering, so really looking forward to the low persistence displays!

The best practices guide covers the design side of angular resolution and binocular overlap: http://static.oculusvr.com/sdk-downloads/documents/OculusBes...

There are technical details on distortion correction in the SDK guide: http://static.oculusvr.com/sdk-downloads/documents/Oculus_SD...

Much of this is in flux as we improve on both the methods and the specific implementations, but the guides will be updated as we get there.

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