Nowadays it seems that Full HD isn’t enough anymore and the terms “4K,” “QHD” and “UHD” are thrown around interchangeably.
At the same time, there is not just one “4K” resolution in the catalogs. I have seen resolutions such as 2560 x 1600, 3440 x 1440, 3840 x 2160, 4096 x 2160 being advertised as 4K. But it can’t all be 4K, right?
Is this because 4K is not defined correctly, did the technology grow independent from the naming conventions, or do the advertising companies just refuse to burden the customers with correct information?
Also, on a sidenote, if 4K means 4xFullHD (2 x 1920 by 2 x 1080 => 3840 x 2160), shouldn't FullHD be called 2K?