system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is the 50mm camera lens considered closest to human vision when the average human eye image focal length is actually much smaller at 22mm?
gpt
Because when you look at a photo you don’t hold it directly up to your eye, and it doesn’t fill your field of view.

Think of a long lens image as just being a wide angle image cropped in and blown up. So a 50mm image (on a full size sensor) looks good when it fills the same amount of your vision as the same part of a wide angle image that would fill your vision.