It's a lot more complicated than distance from the screen. My brain is pretty good at telling the difference between a small screen up close and a big screen f

It's a lot more complicated than distance from the screen. My brain is pretty good at telling the difference between a small screen up close and a big screen far away at the same "apparent size," due to binocular vision and the effect focal distance (of both our eyes and the camera) has on the end result.