> So, if that’s 2K, what’s the real, DCI 2K, then?
Exactly! It was so bizarre when they started doing it. Basically, it seems like they went from the "#K" being based on the vertical resolution (sort of) to it being (vaguely) based on the horizontal resolution - except continuing to use both inconsistently. And 4K became widely used to refer to 3840, so it doesn't even mean DCI 4K (which is actually 4096).
Exactly! It was so bizarre when they started doing it. Basically, it seems like they went from the "#K" being based on the vertical resolution (sort of) to it being (vaguely) based on the horizontal resolution - except continuing to use both inconsistently. And 4K became widely used to refer to 3840, so it doesn't even mean DCI 4K (which is actually 4096).