[JasonADrury]

Yeah, I have a hard time believing that someone with normal eyesight wouldn't be able to tell 1080p and 4k blu-rays apart. I just tested this on my tv, I have to get ridiculously far before the difference isn't immediately obvious. This is without the HDR/DV layer FWIW.

[tokyobreakfast]

Try comparing a 4K vs 1080p that were created from the same master, like a modern Criterion restoration.

Without HDR the differences are negligible or imperceptible at a standard 10' viewing distance.

I'll take it one step further: a well-mastered 1080p Blu-Ray beats 4K streaming hands down every time.

[alex43578]

10 feet is pretty far back for all but the biggest screens, and at closer distances, you certainly should be able to see a difference between 4K and 1080P.

[tokyobreakfast]

The Magsafe cord on a Macbook charger is 6'. It's not as far as you think.

[alex43578]

For the 30 to 40 degree FoV as recommended by SMPTE, 10ft is further back than is recommended for all but like a 98in screen, so yes, it’s too far back.

[account42]

It very much depends on the particular release. For many 4K releases you don't actually get that much more detail because of grain and imperfect focus in the original film.