I think the answer to your question is one or two.
Let’s start with the simple and familiar truth:
4k video takes 4 times more data than 1080p video.
This means video is at a disadvantage compared to 4K resolution
It’s not just about the technology…
4K resolution is more efficient than 1080p when storing files on external USB drives, Blu-Ray players or high end hard drives.
4k resolution saves space – 4k video is 4x larger than 1080p and therefore
It may sound like 4k resolution is a new, shiny and expensive technology but the truth is that 4k resolution is much better for your computer than 1080p.
This is a very small detail but it can make a big difference to your computing experience.
There is a lot of debate around 4k resolution, but if you look at these graphs, you will notice that 4K video is far behind 2160p video.
The reason behind this is that 4k video does not take into account the aspect ratio of your home theater.
There is an inherent resolution mismatch between your display and it’s resolution. This is what we mean when we say “4k resolution looks 2.8 times smaller”. If your HDTV is 1920X1080 and you connect it to a 4k TV via HDMI you may notice something as your image looks closer to the size of a Blu-Ray disc or even a Blu-ray disc with a 4k resolution.
We’re not looking at only your TV…
The bigger problem is the fact that it becomes harder to see detail when you are viewing your content on 4k resolution.
The resolution is now about 40% smaller than 1080p so it can take more resources to display it on your TV but it also has less quality and lower detail.
On a low end 4K display you could see the full resolution of your content that is not on the top or bottom of the screen.
Even a small area on your TV screen could be a little larger so that when you get to that area your screen is about 4x the resolution.
The size difference between 4k and 1080p is greater at smaller sizes too. This means a higher cost and higher time of use for most users.
Even the high end models can be more costly than a 4k television.
So 4k resolution is not for everyone.
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