>>720613569
>2d image that only shows length and not height
sure is retard


>>720613526
>Isn't this image clearly showing only a single eye?
The image shows what our vision sees on a screen. The inner circle in grey shows the focus from both eyes (binocular image). The lighter blob shows how much one eye (the left) is seeing. Obviously, the right eye's FOV would be mirrored on the right side.

>What is this even supposed to mean?
Literally that. Sicne screens are rectangular and our eyes are round, there's more going on that you really can't see due to differences in shape.

And I'm not saying that 4:3 is ideal, but it's what used to be produced in the commercial market, so you can still find them (used). IMAX's ratio is even better, since it covers more of the top and bottom of our field of view, but has that ever existed in the home market?

Again, it's why VR glasses' screens are shaped the way they are. This isn't widescreen. They're not wasting money on superfluous extra space that you can't see, so why should you?