You can cross another resolution off the smartphone display list:
The third device from the Z5 series is the Xperia Z5 Premium, which includes the 5.5" 4k [3840×2160] screen, a 3,430 mAh battery, and the ability to expand its 32 GB of default internal storage by up to 200 GB through microSD cards. The 4k Triluminos IPS display promises to have a high color gamut, higher contrast and higher sharpness, as well. In the few moments I've spent with it at IFA, the screen did indeed look crystal clear.
[...] Xperia Z5 will launch globally in October this year, while the Xperia Z5 Premium should arrive a month later, in November. Both single-SIM and dual-SIM variants will exist for both models.
Some lucky Sony executive is shoving the Xperia Z5 Premium in his Google Cardboard. Next stop, the world's first 5K (5120×2880) smartphone.
(Score: 2) by hemocyanin on Friday September 04 2015, @03:12PM
At what pixel density in 5.5" device, does the human eye stop being able to discern any difference?
(Score: 2) by Nerdfest on Friday September 04 2015, @04:41PM
Screen size isn't relevant when talking about pixel density. Density is based on zize already, and I think Apple called 330ppi "retina", although I think quite a few people can see a bit better than that. That's certainly in the ballpark though.
(Score: 2) by takyon on Friday September 04 2015, @05:52PM
http://www.itcexperts.com/wp-content/uploads/Capability-of-the-human-visual-system.pdf [itcexperts.com]
Check out the second-to-last page for a range of estimates.
For VR, which can be applicable to a phone [wikipedia.org], view distance is close and lenses are used. 8K and 16K resolutions are industry targets:
http://arstechnica.com/gaming/2013/09/virtual-perfection-why-8k-resolution-per-eye-isnt-enough-for-perfect-vr/ [arstechnica.com]
http://vrfocus.com/archives/13220/abrash-vr-needs-hit-16k-match-retinal-resolution/ [vrfocus.com]
[SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]
(Score: 2) by Tork on Friday September 04 2015, @08:46PM
🏳️🌈 Proud Ally 🏳️🌈
(Score: 2) by acid andy on Saturday September 05 2015, @11:02AM
Depends how close you hold the screen to your eye ball, I guess.
If a cat has kittens, does a rat have rittens, a bat bittens and a mat mittens?