Is 4k really important? I am a tech enthusiast, but I don't have a single 4k panel in the home. I have 3 LCD tvs in the house and 14 displays(including family tablets,laptops & phones). Short of someone buying midrange 4k tvs from Costco, how they watching 4k content?
At the distance I sit from our main TV and its size that I am limited to because it's in a custom cabinet, I have a hard time telling 720p and 1080P apart. I did some number crunching based on assumptions about 4K I got from reading an article I came across at the time and I would need a 120" tv assuming 20/20 vision to be able to tell the difference.
So I think it's kind of pointless but if I were a company trying to make a sale over my competitors, I would at least offer a product with specs at least as good as the competition or offer it comparitively cheaper.
Human eye is said to resolve 0.5 seconds of arc...It can detect a single dot ...
- at 10' distance on a 1080p screen which is 33" across
- at 20' distance on a 1080p screen which is 66" across
- at 30' distance on a 1080p screen which is 100" across
- at 40' distance on a 1080p screen which is 133" across
At those listed distances, if your screen is any smaller than the listed horizontal size, you CANNOT detect a single pixel!
4096 pixels which are same size as above means the eye can detect a pixel
- at 10' distance on a 4K screen which is 71" across
- at 20' distance on a 4K screen which is 142" across
- at 30' distance on a 4K screen which is 214" across
- at 40' distance on a 4K screen which is 285" across
- at 80' distance on a 4K screen which is 570" across
So at a viewing distance of 10' improving the screen resolution to better than 1080p when it is > 33" across indeed would be of benefit.
And if you do not want to see a 0.14" single pixel at the cinema with 43' wide 4K digital projection, do not sit closer than 72'.