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I found this article fascinating in regard to screen size, resolution, and what the human eye can take in.
4K Resolution Rules TV Screens But Look, The Emperor Has No Clothes
And like most others, the article is extremely flawed (and simply parrots many other articles). The math that has been traditionally used for is old school and missing quite a bit. Increasing screen resolution so it exceeds the discriminating ability of the eye lowers the risk of strain.
I had the opportunity to take in a lecture at the University of Utah (alma mater) with Dr. Bryan Jones, an optometrist who measures the impacts of technology on the human eye. It was fascinating.
He concluded a person with 20/20 vision couldn’t discern more than 287 pixels per inch at a distance of 12 inches. If the same person were to instead view a display from 24 inches (a more typical distance for desktop use) the maximum discernible density drops to just below 150 PPI. What really causes eyestrain has little to do with cutting-edge technology.
Moreover, the greater resolutions allow us to be closer to reality. So long as brightness andcontrasts stay consistent, the higher resolutions come closer and closer to reality. Having experienced 8K at NAB and IBC, it's pretty darn cool. That said, there aren't even codec proposals for SMPTE nor MPEGLA at this time, and that's what really drives the technology; the compression/decompression algorithms. I'm in the biz too.
