>>2036649The distortions occur because, classically, we imagine looking through a flat pane of glass
and tracing the world onto that plane as it appears from a fixed viewpoint.
Actually, the glass ought to curve around us to form a cylinder or a sphere. We should be tracing on _that_!
But a flat surface is a fair approximation if the viewfield is narrow. And a heck of a lot easier to deal with without computer assistance.
Here's another typical work by Hathway.