I watched the new David Attenborough “Seven Worlds, One Planet” broadcast by BBC in UHD last evening …
… Absolutely stunning; so much detail, contrast & colour at an all new level for broadcast TV.
I have to say I was not impressed with UHD from Wimbledon as it had issues with light (sun/shadow) contrast (on my TV - YMMV), but the broadcast last evening was just perfect.
The BBC format is called Hybrid Log Gamma (HLG), it was invented by BBC R&D in partnership with NHK. HLG gives more differentiation between light & black & includes WCG (Wide Colour Gamut).
“Seven Worlds, One Planet” is the first time BBC broadcast a UHD program ‘as-it’s-broadcast’ along with the SD & HD broadcasts.
UK viewers can watch it (again) on iPlayer.