Interestingly, while many 4K files are HDR (High Dynamic Range), some "updated" SDR encodes are preferred by viewers who have high-end monitors or projectors that aren't quite bright enough to handle HDR metadata properly, or who prefer the original color timing of the broadcast. Why Season 4 Benefits from 4K
Including lossless Dolby Atmos tracks for a 3D surround sound experience.
The massive scale of the Wall and the CGI giants during the battle for Castle Black look significantly more integrated and realistic in 2160p.
Fine-tuning the SDR conversion to ensure the colors look as natural as possible compared to the original source. Final Verdict
Season 4 is a visual marvel. The "updated" 4K encodes fix many of the issues found in earlier releases: