Originally Posted by
StackH
The UHD content on Sky is not the best advert for 4K - it’s compressed (particularly if streamed rather than a live broadcast) and doesn’t yet include HDR. Also, some content is only “enhanced for UHD”, which implies nothing more than an HD upscale.
The best way to watch 4K is still physical media, the improvement is very noticeable on most discs. Some streaming services get close, BBC iPlayer UHD content for example looks superb. If you can, and your TV supports the BBC’s implementation of HDR (HLG), watch the Seven Worlds One Planet series as a good example.
Until Sky implement HDR and up the bit rate its UHD content will only look slightly better than HD, and not the leap that 4K should be over HD.