* For which read almost all (if not all) 35mm/70mm films, and quite a few digitally shot films. This argument has been kicking around since HDR was first suggested - old films were 'not shot for HDR'. I'm perhaps not knowledgeable about the precise terms to articulate the argument myself, so I'll quote Robert A Harris. For those who are unaware, RAH has been responsible for a number of film restorations over the years, starting with the job of simply restoring film for archive film and presentation purposes, but then also for moving these works into the digital media of (at first) LaserDisc, then DVD, and then Blu-ray Disc. He's restored Hitchcock's Vertigo, Coppola's Godfather Trilogy, Lean's Lawrence of Arabia, and Kubrick's Spartacus. The master analogue (film) elements and digital masters were largely restored and created by him; whenever you watch a restored print of The Godfather, or view it on Blu-ray Disc, it's his restoration you're seeing, from film cell to digital pixel. Harris says: A more damning criticism of applying HDR to older films, I cannot imagine. A more knowledgeable or reputable source, it's difficult to picture. I wanted to bring this up, as we have a thread here about Blade Runner, and I don't doubt there'll be more 'premium' titles given the HDR treatment in the near future. Now whether these will be given an HDR 'remix' is not yet clear. But it's a factor of which I think we all need to be aware, before automatically swooning over the possibility. In most cases the increased resolution of 4K compared to 1080p will be negligible on the best displays at anything like a normal seating distance, and invisible on many. And the increased colour space, whilst visible, will not be worth the substantial extra cost for most. Ask yourself this, when was the last time you came home from the cinema, turned on your TV, and noticed any difference in the colour gamut on offer? I'm not anti-UHD. To be absolutely clear, if a film is shot in 4K with plenty of extra detail, using the full colour range on offer, and in HDR (and with an HDR presentation in mind), and you have a large display at a reasonably clos seating distance, then a UHD viewing will be closer to what the film-makers wanted you to see. And I'd definitely rather see such a film on UHD than Blu-ray Disc. But that's a tiny, almost imperceptibly small number of films in the great scheme of things.