Re: 4K / Ultra High Definition Monitors

On Tue, 24 Sep 2019 08:41:55 +0000, Ian Stewart wrote:

>>> ...apparently you sit closer to a 4K/UHD TV monitor than a 1080/HD
>>> TV monitor.  
> 
>>Unless it’s a bigger one.  
> 
> Unless its two times bigger or more.

That would be correct for linear dimensions, given the doubling in
linear number of pixels.

> If you watch a 30 inch 1080/HD TV at 1.2 meters, then its worthwhile
> watching a 30 inch 4K/TV at a distance of between 0.6m and 1.2m in
> order to receive the benefit of 4K/HD over 1080/HD.

The problem with a screen that comes too close, is the increased
difference in distance from the eye to the middle of the screen, versus
to the edges.

Samsung and others offer curved screens for this reason--not sure how
popular they’ve been.

A bigger screen further away reduces this problem. The ratios may be
exactly the same, but the eye is better at focusing across the greater
range of distances. At least I think that’s how it works...
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