Sony to release "Mastered in 4K" Blu-rays

Ritley

Ritley

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If I put in 2 4k blu rays at once do I get 8 Ks? I need as many Ks as I can get, pls advise.
 
C

cosmic_cs_sl

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Hmm? You only need 2 times 4K resolution to get 8K resolution. Am I reading something wrong here?

4K = 4 times 1080p, 8K = 8 times 1080p (in terms of pixels)
 
Alkorin

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Wonder if anyone's actually got the math for how large your screen would have to be / how far away you'd have to be for that kind of resolution to even matter. 4K is ridiculous enough as it is...
 
Izo

Izo

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cosmic_cs_sl said:
Hmm? You only need 2 times 4K resolution to get 8K resolution. Am I reading something wrong here?

4K = 4 times 1080p, 8K = 8 times 1080p (in terms of pixels)
Click to expand...
http://en.wikipedia.org/wiki/Ultra_h...ion_television
4K UHDTV (2160p) has a resolution of 3840 ? 2160 (8.3 megapixels), 4 times the pixels of 1080p.
8K UHDTV (4320p) has a resolution of 7680 ? 4320 (33.2 megapixels), 16 times the pixels of current 1080p HDTV, which brings it to roughly the detail level of 15/70mm IMAX. NHK advocates the 8K UHDTV format with 22.2 surround sound as Super Hi-Vision.
Click to expand...
 
Alkorin

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Went and looked up my own question, because I was curious.

At 9 ft distance, pixel spacing must be 0.0094247 inches or less. For 1080p set, this equals to 18.09'' width or less. With Pythagorean theorem we can find out diagonal measurement. It is ~21''.

So, at 9 ft viewing distance, 1080p TV set is meeting visual limitations of healthy observers when TV set diagonal measurement is 21 inches or less. That means you'll benefit from 4K (2160p to be precise) if your TV is bigger than 21 inches.

Let's see when a 4K TV set meets this requirement, for 9 ft viewing distance too.

At 9 ft distance, pixel spacing must be 0.0094247 inches or less. For 4K (2160p) set, this equals to 36.19'' width or less. With Pythagorean theorem we can find out diagonal measurement. It is ~42''.

So, at 9 ft viewing distance, 4K (2160p) TV set is meeting visual limitations of healthy observers when TV set diagonal measurement is 42 inches or less. That means you'll benefit from 8K (4320p to be precise) only if your TV is bigger than 42 inches.
Click to expand...
Stolen fromhttp://www.neowin.net/news/itu-appro...-specification. No direct references cited. There's more there, and they go further in depth than I really care to try to understand. I can't imagine "needing" this anytime soon, even though my TV's bigger than 42".
 
Grimmlokk

Grimmlokk

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This is the chart from a few years back. Updated to include 4K.

5cRzF.png


From here.

http://carltonbale.com/1080p-does-matter/
 
pii199

pii199

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I sit 13 feet from my tv. I wont be able to see a difference between 1080p and 4k untill i get about a 100 inch screen according to that chart.
 
kegkilla

kegkilla

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chart is BS created by losers who want to feel better about having shitty 720p TVs
 
Alkorin

Chancellor Alkorin

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Then what does the real chart look like? The numbers I posted and that chart disagree wildly, so, somewhere in between, there must be truth.

I can't possibly believe that it makes any sense for everyone to go and pick up 4K TVs at ~50-60" with a 9-10' viewing distance, which is where most people are at today (with 1080p), I'm sure.
 
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