You don't look at all of a 3840x2160 screen, with a need for pixel-precision all over it.
Doing a test right now, I'm focusing on the 13-inch computer screen where I'm typing this and holding up a large container of cashews directly to the right of the display. It's literally less than 30 degrees to the right of my focus, and the word "cashews" is in half-inch-high letters, and I can't remotely read the word without moving my eyes over to it.
Doing a test right now, I'm focusing on the 13-inch computer screen where I'm typing this and holding up a large container of cashews directly to the right of the display. It's literally less than 30 degrees to the right of my focus, and the word "cashews" is in half-inch-high letters, and I can't remotely read the word without moving my eyes over to it.