Is there a REAL difference or is it both the same.
According to a German Wikipedia article 2K is a resolution with a width of UP TO 2048 pixels. Therefore 2560x1440 doesn't fit into this range. Furthermore on the English 2K article I can see only resolutions less or equal than 2048, so it somehow seems to confirm the German article.
However I can find a lot of articles saying 2K and QHD are all the same, e.g. on this page.
Some other sources say, that 2K indicates all resolutions with a width of 2000 pixels or more. To be certain, I would like to know, whats right and whats wrong.
Is QHD a part of 2K or is it not? Or is it the same?