I learned a new thing today.
A few weeks ago I bought a 14" portable screen for various reasons I absolutely fell in love with because of it's size and high pixel density. It's basically a notebook panel some crafty chinaman stuck into a fancy brushed aluminum case and put some ports on. So far so good. Since most of what I'm doing at the computer is text based and text looks absolutely brilliant on it and sitting close to such a screen is actually not as bad to you and your eyes and posture as sitting close to a 20"+ screen I actually started using it for many things I do, and that went perfectly fine. It was basically like sitting at a notebook without all the disadvantages of the notebook.
Emboldened by this, I bought another portable screen, a 15.6" 4k screen. With even higher pixel density than the 14" screen and just a little bit bigger, it must look absolutely brilliant, right? Wrong. Immediately after connecting it I noticed things looked off. Not only were the colors absolute shit but at least the fonts even somehow looked somewhat worse than on the 14" screen.
And that's the day I learned that there's such a thing as fake 4k screens. If you try to draw a checkerboard pattern with 1 pixel white/1 pixel black this screen just cannot do it. I found out there are indeed lower value 4k screens that have
different pixel layouts to lower the cost. Didn't know that either. So there you go, in case you didn't know like me. As a result of this, this screen also has very poor viewing angles.