> After all, our eye really is at different distances from different parts of a straight wall, so it sounds logical that we would see the fisheye effect describ

> After all, our eye really is at different distances from different parts of a straight wall, so it sounds logical that we would see the fisheye effect describe in the article. It's not the distance to the points in the scene that determine where they appear in a perspective projection, it's the angle. For any single point on the screen/retina/projective plane, it can actually correspond to any distance from the camera/eye (i.e., a ray of possible points).