> There are strongly diminishing returns going from filmstrips* to movies to color films to HD to 4K to 3D, at each step you gain less and less. I agree. For c

> There are strongly diminishing returns going from filmstrips* to movies to color films to HD to 4K to 3D, at each step you gain less and less. I agree. For cinematic content viewed in a theater or in a living room couch context, going from analog SD to digital HD was huge. Going from HD (2K) to 4K can be good but the quality is mostly from more bits being devoted to the compression than from the extra pixels. Most theatrical digital presentation is in DCP format and still 2k and people think it looks great. Other video engineering things most people don't know: * Well done HDR10 (or Dolbyvision) can contribute hugely to image quality. For example, I'd choose a 2K movie in HDR10 every time over the same movie in 4K without HDR. * Theatrical 3D presentation is generally pretty bad and should be avoided if you care about visual quality. It's often around half the brightness and half the resolution and yet costs more. Even if done ideally, the end effect doesn't deliver anything like how your eyes actually see a real environment. The details get technical but theatrical 3D projection is an unnatural artificially constructed effect that's just weird. People claiming "It looked just like reality!" just shows the power of the placebo effect and suggestion, because objectively measured, it's just not. Famous directors don't usually come out against theatrical 3D the way they do against some other things. The reason is 3D is a pricey up sell that's mostly all margin, so it generates serious money but, privately, they despise 3D from both a quality and aesthetic viewpoint.