What "K" is reality?

[ZenMonkey]

This might be the wrong forum. If so, my apologies.

 

I remember when HD came out and was blown away because it so realistic- even now watching shows in HD gives them a surreal quality, and I feel like 4k has more detail than I see natively, but that might just be tricks of the camera and photo editing, or the way my brain processes what I see. So, I'm just curious what "k" we see, on average because I know everyone is different, when we look out our windows into the world.

[AshleyAshes]

Your eyes don't have a finite resolution.  Though, if anything, your eyes actually don't have very good resolution except at the center.  The farther from your center of vision you go, the less detail your eyes pick up.  However your amazing monkey brain doesn't see things getting blurrier as towards the edges of your vision because it's compositing the image from every twitch of your eye to tell itself what would 'should' see.  This is also why you don't rage out at your nose being in the middle of everything you look at, your brain opts to ignore it unless you choose to focus on it.

[Brooksie359]

5 minutes ago, ZenMonkey said:

This might be the wrong forum. If so, my apologies.

 

I remember when HD came out and was blown away because it so realistic- even now watching shows in HD gives them a surreal quality, and I feel like 4k has more detail than I see natively, but that might just be tricks of the camera and photo editing, or the way my brain processes what I see. So, I'm just curious what "k" we see, on average because I know everyone is different, when we look out our windows into the world.

Eyes are dynamic and adjust depending how we use them. 

[Cyracus]

It's basically impossible to quantify, but something like millions of k

[gnomik]

Have you seen this?

https://www.youtube.com/watch?v=4I5Q3UXkGd0

[Enderman]

It depends, the center of your vision has a higher resolution than the edges of your vision.

It doesn't depend on how many "k"s, it depends on pixel density.

Apple's "retina" displays are designed so their pixel density is high enough that you can't see the individual pixels at the normal use distance.

 

[ARikozuM]

Somewhere between 0 PPI and infinite PPI with a margin of error of infinity and beyond. 

 

[DnFx91]

1 minute ago, ARikozuM said:

Somewhere between 0 PPI and infinite PPI with a margin of error of infinity and beyond. 

 

yup, resolution is irrelevant to this question, its all about DPI/PPI

 

a 1 inch diagonal 480p display will have a DPI of 400, which is like 3 times higher than the DPI of a "retina" display meaning you literally could not get a higher quality image no matter how many extra pixels you added. You can argue that above a certain DPI, there is no more quality to be seen, but resolution has nothing to do with it when not considering viewing distance

 

Apple pretty much answered this question when they defined "retina"

 

On this basis, i would say that the human eye is incapable of seeing greater detail than retina DPI because it is self defining, Retina literally means, the pixels are indistinguishably close at intended viewing distance.

 

Resolution comes into the argument when you are changing the viewing distance, a 30" UHD monitor has a DPI of 147, and a 15" 1080p monitor has the exact same DPI of 147.

 

 

[DnFx91]

as a further note, when people ridiculed 8k displays, saying there was literally no point, its for this exact reason, they were assuming you would sit average TV distance from this display (6-10 feet) in which case 8k would be kinda pointless. But advertisers instantly understood 8k, because now they can have like digital signage running at 8k, where people can get so damn close to the display and not have the image go blurry, or have the pixels become visible. Allowing massive amounts of information to be displayed and all be readable. Clearly they didnt have 8K gaming in mind when they built the first 8k monitor.

 

An 8k digital signage panel would basically look like printed paper at super short view distance.

 

Sorry didnt think i explained it all that well earlier.

[DnFx91]

https://www.sven.de/dpi/