This is film that was shot in the best quality 3D possible and has to be seen in 3D on top quality (preferably flat screen) TV, to fully appreciate it. The transfer to Blue Ray is superb, with an excellent accompanying music score. Forget all the hype about HDR and 4K (which reminds me of the story about the 'emperor's new clothes'!) as it would lose an awful lot without 3D.
The 3D footage is truly appreciated when viewing the making of the film and seeing the efforts of the production team, hauling extremely heavy 3D equipment up mountains, through jungles and over the Victorian falls to create this spectacularly film.
The only negative point was the audio reference level, which was set rather low, requiring a volume increase on the AV equipment.