system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does HD Video of HD Pictures appear more detailed and clearer than if I was to view it in person?

So I was watching an HD video of the Grand Canyon and I was struck by how it seemed more realistic than if I was to see it in person. I have 20/20 vision so there wouldn't be an issue there. Any theories/answers would be awesome!
gpt
Few reasons:

1. Colors are likely enhanced from the camera making things sharper than is actually natural.
2. Especially when dealing with places like the Grand Canyon, you deal with a lot of glare off surfaces and your eyes have trouble taking in the bright light without squinting.  Once the picture is developed/edited, you don't deal with this any more.
3. Zoom.  Your eyes have no zoom, the vast majority of nature pictures have at least some zoom applied meaning there's details in the pictures your eyes couldn't pick out.