Conina said: https://www.avbend.com/blog/how-to-calculate-tv-size-and-viewing-distance/ I also wonder how do you read the text of a game in that distance. |
20/20 vision is being able to distinguish 30 cycles per degree (at max contrast, it's lower for lower contrast) which is the same as 60 pixels per degree. 40 degree fov comes to 2400 pixels wide, thus 2560x1440p is more than enough for great immersion.
Most people sit more in the 20 to 30 degree fov range, 1200 to 1800 pixels width, 1080p is plenty for that. You do need descent anti aliasing since it's easy to pick up on (unwanted) patterns, aka pixel crawl and shimmer. However native 4K is not needed for great immersion.