When they announce a 4K Apple TV. However, like one user already said, it doesn't matter on a small iPad screen. YOu need a big screen to notice the differences.
This would also be my guess, when they release a 4K ATV.
I will disagree with everyone saying 4K will not make a difference. While 4K and HDR are not mutually exclusive, the industry feels like that in regards to movies. HDR will be important, even on an iPad screen.
I actually agree - I can tell the difference between HD and 4k even at 42 inches, which I think is about the smallest 4k TV I have seen.
But also, yes, HDR is probably more important than the increased resolution, so that may be noticeable on an iPad - but the iPad screen will have to support it, as it relates not just to colour but also brightness and contrast levels, and also has to do with bit depth.
Even so, if an iPad could display true HDR, on a screen that size, what will you see? A movie that has fractionally better colour than the HD version? Yes, it would be better, but it's still screen-size dependent - the visual impact of HDR is, like 4k, related to the size of the screen.
I am not saying you cannot discern any difference, but it is simply fact that it is harder for the human eye to tell the differences I tail you start reaching sizes that make use of the difference. I have a 65" 4K TV with HDR (+ Dolby Vision) and I can see how amazing it looks. But I also know when I hop on my iPad or my Mac mini and I play a 1080p movie on a smaller screen it looks great too. It doesn't have the breadth of colors an HDR tv has with the wide color gamut, but it looks good.
HDR is 100% more important than 4K. Color gamut is very important. Like you said, yes you can see the difference on a 42" but its not easily discernable.
Right. Which goes back to the Apple TV - Apple are not going to offer iTunes content in 4k until the Apple TV supports it.That is exactly what I was saying, and you don't get HDR and WCG without 4K. Even though you do not need 4K for those things, they are tied together in the movie studio world. Even on a 10" screen you can see the difference WCG and HDR make.
People keep saying you need a 60" screen or bigger to see the difference.
I use VLC player and install 4k movies on my new 10.5 Pro that are often 10gb or more in size and they look damn amazing compared to 720p or 1080p videos. I can clearly tell a BIG difference. Even if they are only 3gb, the quality is amazing. I haven't used iTunes to install movies for a very long time.
You don't need a 60 plus tv to tell the difference. I have a 55 inch and its easily noticeable.You need a 60"+ screen to see the difference between HD and 4k. Offering 4K makes more sense for Apple TV users, except the current Apple TV does not support 4k.
For the iPad Pro? Irrelevant.
Right, and I said above, I can actually tell the difference.
But as someone else says, HDR comes with 4k. There is no desire for anyone to adapt it to HD, because it's not just about the source material, it's a set of (hardware) display standards. HD isn't outdated, but it's not something in development, with all efforts on 4k and 8k (and beyond). So nobody is likely to make an HDR 1080p TV set. An HDR-compliant phone or tablet screen is possible, but again, it all comes back to viewing distance and screen size. Better picture at 12.9" isn't as noticeable as better picture at 65".