That's for a display that you sit several metres away from in a living room. For a closer seating (2-3m) with a 50" panel it is noticeable though (I've tried).
For a ~30 inch computer display at desktop viewing distance, the difference between 2560x1440 (which is larger than HD already!) and 4K is clear to see.
Exactly, it would be nice if I could watch 4k content on my MacBook Pro, while not full 4k, it's close enough where I would be able to tell the difference.
For a ~30 inch computer display at desktop viewing distance, the difference between 2560x1440 (which is larger than HD already!) and 4K is clear to see.