8K now being broadcast in Japan

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rugrat

3106 posts

Uber Geek

Lifetime subscriber

#2140199 5-Dec-2018 23:17

TwoSeven:
davidcole: I dunno how they can be doing 8k when 4K hasn’t fully rolled out. Al it will do is alienate those that bought 4K into thinking damn now we need another new set.

I got the impression that 8k was an interim standard a year or so ago when I heard about it. I thought it was then 16k and 32k.

Not sure of the reason other than better HD

What's the maximum the human eye can see?

from: https://www.pcgamesn.com/both-nvidia-and-amd-are-preparing-for-8k-for-the-human-eye-that-resolution-is-close-to-perfection

"Beyond that, the human eye wouldn’t be able to perceive any more detail on their screen. There’ll be no great race to 16K or 32K."

I know that's for PC Games, but the eye would have the same limitations for watching TV.

cb1

336 posts

Ultimate Geek

#2140293 6-Dec-2018 06:33

I remember hearing that the 2020 Olympics in Japan would be filmed/broadcast in 8K.

pdh

338 posts

Ultimate Geek

#2140452 6-Dec-2018 11:32

OK - my math is always open to challenge...

If your eye doctor thinks you have 20/20 vision, she'll expect you to distinguish an 'E' from an 'F' of a certain size on the eye chart.

That size requires you to detect the presence of a lower stroke (of the 'E') which is one minute high (one 60th of a degree).

Eye doctors sit you at a distance, and make the letters that size - so that it works that way.

So - if you have 20/20 vision - resolving 1 minute of arc should be quite do-able.

Now, if you grab your Galaxy S8 or 9 and look at it from 40 cm - you're looking at pixels that are spaced at 0.4 minutes.

If you look at a 4K 65" TV from 3.5m away (my lounge, accidentally) - again the pixels are spaced at 0.4 minutes.

If you made those screens black and turned on a few random white pixels - I think a reasonable eye would spot them.

To get the same apparent pixel size at 8K on a 65" screen - you'd have to sit unreasonably close at 1.7m.
But for a 130" screen, you could be back out to my 3.5m distance.

Just doing a little forward planning, you understand ;-)

clevedon

1059 posts

Uber Geek

#2140489 6-Dec-2018 12:34

pdh:

OK - my math is always open to challenge...

If your eye doctor thinks you have 20/20 vision, she'll expect you to distinguish an 'E' from an 'F' of a certain size on the eye chart.

That size requires you to detect the presence of a lower stroke (of the 'E') which is one minute high (one 60th of a degree).

Eye doctors sit you at a distance, and make the letters that size - so that it works that way.

So - if you have 20/20 vision - resolving 1 minute of arc should be quite do-able.

Now, if you grab your Galaxy S8 or 9 and look at it from 40 cm - you're looking at pixels that are spaced at 0.4 minutes.

If you look at a 4K 65" TV from 3.5m away (my lounge, accidentally) - again the pixels are spaced at 0.4 minutes.

If you made those screens black and turned on a few random white pixels - I think a reasonable eye would spot them.

To get the same apparent pixel size at 8K on a 65" screen - you'd have to sit unreasonably close at 1.7m.
But for a 130" screen, you could be back out to my 3.5m distance.

Just doing a little forward planning, you understand ;-)

We sit at 1.8 meters from our 65" VT Panasonic plasma and it's great.

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