>>106280859
>>106281953
Let me add on to this and consider the following

Any half decent picture quality for a pc monitor BEGINS at 4k 27" at normal viewing desk distance

>20/20" vision (or "6/6" in Europe) corresponds to being able to resolve details 1 arcminute in size, or 60 pixels per degree. This is defined as the "normal" visual acuity for adults, but it is actually not the average. While visual acuity changes per person and over time, the average acuity in adults is about 1.6 times better than 20/20, roughly 20/15 vision, or 80ppd. Visual acuity peaks at around 25 years old and then slowly declines, but even then the average 75 year old has better eyesight than 20/20.
>Seeing details at 120ppd is equal to "20/10" vision (or "6/3" in Europe).
>20/10 vision; practical upper limit of visual acuity
>the theoretical upper limit of human visual acuity lies somewhere between 20/10 and 20/8 vision.

60 ppd = 20/20
80 ppd= 20/15
120 ppd= 20/10