At 33 megapixels per frame (16 times as much as fullHD), how big do movie files get if you encode them with reasonable compression? Presumably at 60fps and with 12 bit color? Something like 200-300 GB for an average movie or something?
it seems a perfectly acceptable size for cinema... still a bit high for home users at that moment...
8K is a rather insane resolution. Here are some quick calculations:
The world's largest IMAX screen is in Darling Harbour, Sydney, Australia, and measures 35.7 m x 29.7 m.
To get an insane viewing angle of 60°, you would have to sit at a viewing distance of 31 meters away from that screen. This is a scenario where you're sitting way too close to the screen (e.g. recommended THX viewing angle is 36° which corresponds to a viewing distance of 57 meters).
Still, even from that close, you get a PPD (pixels per degree) which is 31 meters * 7680 pixels / 35.7 meters * tan(0.5°) = 58.2 PPD, which is above the 57 PPD Apple defines as "
Retina". If you would view at the THX minimum viewing distance (49 meters, to get 40° viewing angle), you get 92 PPD which is more than any Apple Retina screen ever made. If you would view at the THX recommended viewing distance (57 meters), you get 107 PPD.
To put it in other words: even if you have the largest screen that exists, if you sit at the recommended distance from it, 4K is already enough to reach "Retina" resolution. 8K has 4 times as many pixels, but I doubt that anyone can see the difference while looking at the whole picture.
The only possible application I can see for such an insane resolution, is for side-by-side encoding of 3D movies to be displayed at insanely large screens which are viewed from way too much up close.
Anyway, it's interesting that technology is now capable of reproducing visual information in a sufficiently realistic way to fool the human eye. We already reached that point for audio some time ago. Now the other senses! Tactile, scent, taste are lagging behind!
