I feel like these DPIs have improved beyond the point of it mattering. Diminishing returns given the limits of human vision. 5k, 6k, seems more about marketing, like 96khz in the audiophile world. Makes little subjective difference.
I'm guessing it's due to the influence of the TV market on the digital display industry. TV users don't care for >4k, which could make manufacturing >4k more difficult. It's only a guess, and not a very educated one either.
I got a 218 ppi 27 incher, and I was disappointed when English is crisp but my native language is a pain at small font sizes. My 350+ ppi mobile renders them fine at those sizes.
Talking about PPI without including distance to the screen is like talking about how far your car can drive on a tank of gas without mentioning how big the gas tank is.
220 PPI on a TV screen that you're sitting 8 feet away from? More than most people will ever notice. 220 PPI on a monitor that you're 18-24 inches away from? Probably the ideal density. On a phone or tablet? Meh. On a VR display? Absolutely unusable.
Oh god. I hate that Apple helped stick this BS in people's heads.
The human eye can resolve way, way past 220PPI. Even at distance.
I'm sitting here typing on a surface book with a 13" panel that is 267PPI and I would adore it to be double that. I run at native resolution with no scaling.
For the "average" human eye (20/20 vision) it's something like ~338ppi at 25cm right? If you have better vision (my corrected vision is 20/10 which is near the theoretical max for a human (20/8 I think is the max~?).
It's aggravating that people are like "over 300PPI is the max so screw improving". It's literally just the "max" at being able to discern the spacing between pixels accurately. Higher PPIs/DPIs still lead to an increase in objective clarity and crispness as you are able to improve aliasing etc.
Some of my old devices had PPIs in excess of 520PPI and I absolutely adored it (Note Edge). I would kill for a desktop monitor with similar PPI.
SO yeah, I guess "diminishing returns" is a thing but I wish it was at least a readily available option. I would adore a 27-30" monitor that was ~500ppi.. sighs
I don't have a definite reference for anything between 185 and 217, but it is a big difference visually. Somewhere in that range, the pixels disappear at a reasonable viewing distance.
