"Zooming in" is not going to make the image any clearer.
It's just going to make it bigger, and blurrier.
Kind of like when 2K gets upscaled to 4K.
Nigel am I wrong?
Well, if I'm using my FHD monitor to play a 4K video, as I quite often do because it is a good monitor and my player does have a zoom function, then I can zoom in x2, and see 4x the detail... I do have a 4K monitor too, but I'm quite happy using the FHD monitor and zooming in to see the detail. If I use the 4K monitor then I still zoom in if I want to check the fine detail, so there is not much advantage to the 4K monitor, except that I can view it from across the room and still see the detail, whereas with the FHD monitor, I always want to be sitting directly in front of it. So 4K is for use as a TV, FHD or 2K is for use as a computer/laptop, and yes you can use a 4K screen for computer/laptop use, but it is not necessary.
If you are comparing a small 4K monitor with a large 4K monitor then you might be correct, but in reality, I can't see all the detail on my 4K phone screen without using a magnifying glass, so using the zoom feature does still let me see more detail on that. I think by the time you get to 42", you need 4K or it doesn't look good, at least close up, and then you don't really need the zoom unless your eyes are pretty poor.
Everyone has different eyes and will have different preferences, if you are going to buy a 42" screen then definitely get a 4K one, but if you only want a 24" due to space, I don't think 4K is necessary, or much of an advantage to most people. I like my FHD 24" for computer use, it is a nice bright IPS screen with fantastic colour, such as you don't get with 4K screens unless they are ridiculously expensive!
