I wonder if the render resolution was actually determined by the output resolution of the film recorder being used to get the sfx out onto film for display? I can't obviously find a film recorder that offers more than 8k on 65mm/15-perf.
As I've not seen anyone else mention it, I feel the need to point out that Digital IMAX (which is the vast majority of screens and showings) maxes out at 4K.
As I've not seen anyone else mention it, I feel the need to point out that Digital IMAX (which is the vast majority of screens and showings) maxes out at 4K.