Field curvaturephotography

The premium Quest 3's lenses and displays are no doubt better, but for the entry level hardware this is still a good upgrade.The better GPU will mean it doesn't need to lean as hard on "foveated rendering" where the center of the screen is at high resolution and everywhere else is blurry and upscaled with unreadable text. I say "foveated" in quotes because it doesn't know where your eyes are looking, only how your head is oriented, so if you want to see something in detail you need to point your face at it.

A perfect image is formed on a curved surface, and the image blur at the paraxial image plane increases as H2. A compromise flat image plane that reduces the average image blur occurs inside paraxial focus.

Field curvaturelens

Field curvatureaberration

The better GPU will mean it doesn't need to lean as hard on "foveated rendering" where the center of the screen is at high resolution and everywhere else is blurry and upscaled with unreadable text. I say "foveated" in quotes because it doesn't know where your eyes are looking, only how your head is oriented, so if you want to see something in detail you need to point your face at it.

That effectively means it's Quest 2 optics with a Quest 3 GPU and color passthrough.The premium Quest 3's lenses and displays are no doubt better, but for the entry level hardware this is still a good upgrade.The better GPU will mean it doesn't need to lean as hard on "foveated rendering" where the center of the screen is at high resolution and everywhere else is blurry and upscaled with unreadable text. I say "foveated" in quotes because it doesn't know where your eyes are looking, only how your head is oriented, so if you want to see something in detail you need to point your face at it.

While not a good image surface, the Petzval surface represents the fundamental field curvature of the system. It depends only on the construction parameters of the system: surface curvatures and element indices of refraction.These four image surfaces are equally spaced and occur in the same relative order: T-M-S-P or P-S-M-T. The best image quality occurs at medial focus. An artificially flattened field or medial surface can be obtained by balancing astigmatism and field curvature.

Field curvature characterizes the natural tendency of optical systems to have curved image planes. A positive singlet has an inward bending image surface.