The Martian 4K UHD (2015)

[roxics]

Originally Posted by Penton-Man

Sounds fascinating.

Who, anyone of note? Where? Documentation? Have they expressed these concerns to any post house supervisor (in Hollywood) in relation to which reference or client monitors to purchase? Do these select filmmakers (as a whole) know, from experience, for instance what Light Iron (a big proponent of 4K finishing and display) has in its color grading suites as opposed to its ‘consumer’ room?

A selection of the filmmaking community. Not all of which release films through major studios. There are a lot of indie filmmakers out there who voice their concerns as well. So this is what I've heard from them. That is who I am speaking about. These are people who are not shooting with over 4K cameras.
I'm sure you're speaking from a Hollywood perspective, which I fully believe will push the limits as much as they can. But at their budgets, they can. Yet they don't represent the whole filmmaking community around the world, even if they are the major players.

Originally Posted by Penton-Man

No, you, and apparently others, don’t understand, that has little to do with what I posted. Even with as you say the “F65, *RED* (which one?) or Super35mm+ film camera” or, for that matter, a few you didn’t list - the F55, Red Weapon or Alexa 65,

Any camera above 4K (including any RED above 4K) that can be downsampled to a full color 4K image. It's the nature of the bayer pattern sensor. You need higher resolution to get full color. If these were 3 chip cameras that would be a different situation. It's the reason why cameras like the F65 downsample from higher res. Same with the older Genesis/F35 to 2K.