4K Ultra HD-udgivelser

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Steen T
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Re: 4K Ultra HD-udgivelser

Indlægaf Steen T » lør mar 11, 2017 11:02

Her er en fin artikel om hvorfor 4K er noget opreklameret pjat:

[...] Armed with my acuity test and calculators, it is time for some real-world examples. I measured my own acuity limit to be 0.60 arc minutes, which is quite a bit better than the average of one arc minute reported on Wikipedia. This agrees with ‘official’ eye tests as well that give me a better than average score.

Suppose I have a 42" 1080p television. This means a screen width of 36.6". At what distance would I need to view it to see all details comfortably? The calculator says: 65.5 inches, or 166 cm. That is already closer than the distance I would spontaneously use. Imagine I would be watching that TV together with three other persons who want to be certain to see all pixels. Things would get very cramped, especially if those other persons would have eyes more average than mine and would therefore need to sit even closer.
Now if that same television would be 4K, the recommended distance would become 33 inches, or 84 cm. Yeah.

[...] This is not the first time digital image resolutions have spiralled out of control. The pointless megapixel race for digital still cameras has been going on for years and has resulted in horribly noisy sensors that need a thick fat layer of denoising algorithms to produce output that does not look entirely ridiculous. It seems humanity likes to bump its head against the same stone over and over again.


:wallbanger:

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Mills
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Re: 4K Ultra HD-udgivelser

Indlægaf Mills » lør mar 11, 2017 12:40

HDR gør altså en ret stor forskel! Meget mere end 4K.
En del af "De Gnavne Filmnørder" http://dgfn.dk

Hands off the compression button, music industry!
Hands off the DNR button, Blu-Ray producers!
Films are supposed to have grain!

https://twitter.com/Kristofferabild

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Mills
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Re: 4K Ultra HD-udgivelser

Indlægaf Mills » lør mar 11, 2017 12:41

Naiera skrev:Du har fire gange så mange pixels på dobbelt så meget plads. Det nye codec skulle være 50% mere effektivt (den køber jeg dog ikke, men lad os sige at det passer), men så er vi jo kun halvdelen af vejen. Desuden fylder HDR og alle de mange flere farver også, og så er vi lige pludselig langt bagude.

Men har du set det?
En del af "De Gnavne Filmnørder" http://dgfn.dk

Hands off the compression button, music industry!
Hands off the DNR button, Blu-Ray producers!
Films are supposed to have grain!

https://twitter.com/Kristofferabild

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Steen T
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Tilmeldt: lør sep 20, 2003 12:21
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Re: 4K Ultra HD-udgivelser

Indlægaf Steen T » lør mar 11, 2017 13:34

Mills skrev:HDR gør altså en ret stor forskel! Meget mere end 4K.

Men den handler også kun om 4K.

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Mills
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Re: 4K Ultra HD-udgivelser

Indlægaf Mills » lør mar 11, 2017 14:21

True, men enig i at 4K ikke gør en kæmpe forskel. HDR og bedre farver gør derimod. :)

Unforgiven på vej til UHD BD.


"'Unforgiven' (1992) 4K Ultra HD Blu-ray on Amazon: http://amzn.to/2mkCrTc https://twitter.com/UltraHDBluray/statu ... 00/photo/1 "
En del af "De Gnavne Filmnørder" http://dgfn.dk

Hands off the compression button, music industry!
Hands off the DNR button, Blu-Ray producers!
Films are supposed to have grain!

https://twitter.com/Kristofferabild


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