Comment by GuB-42

30 degrees vertical is actually a recommendation for work[1], not for movies. If you look around for guide about ergonomics, you will often see that 30 degrees figure, or "top of the screen at eye level, center 15 degrees down", which mean the same thing.

For movies, THX recommends a 36 degrees horizontal viewing angle[2], which is about 20 degrees vertical. Recommendations vary, sometimes it is 30 degrees, sometimes it is 40, but always horizontal.

Now, no one will force you. If you prefer to have a very large screen right up your nose, that's your choice, and maybe your work environment calls for it. But it is just not what it is generally recommended and I would put it into the "exception" category. And sure, in that case, increased resolution is good.

As for antialiasing, it will not make the image sharper, quite the opposite in fact. However, if your resolution is so that it is over your visual acuity (you can't distinguish between 2 thin parallel lines and 1 thicker line), antialiasing will take care of superaccuity. That's the ability of your brain to use image processing techniques to detect jaggies that are finer than what you eye can see. If you have good vision and a 4k monitor closer to you than the recommended distance, it is normal to see the difference even with anti-aliasing turned on.

[1] https://www.viewsonic.com/library/business/best-computer-scr...

[2] https://www.thx.com/questions/thx-certified-screen-placement...