THe merits of this situation has nothing to do with technology or even the look of the movie. Production in digital is cheaper than film so that is the way studios want to shoot them. Now enter a hot-shot director. If you are successful enough, you get to demand terms. And one of those terms is shooting on film. Not because the director needs that technically. He needs it from ego/pride point of view to match the previous director who forces his studio to shoot on film. In other words, it is a demonstration that you have arrived as a director in Hollywood: "oh he got the studio to shoot it on film!"
The films are then digitized and to save money, edited in 2K. Now comes 4K video and HDR. You have to go back to the negatives and rescan them at great expense!!! Which ain't going to happen and slows to a trickle the availability of such movies in 4K/HDR.
http://filmmakermagazine.com/88971-39-movies-released-in-2014-shot-on-35mm/#.Vo5U9s4qFss
Just the facts, ma'am - just the facts.
As an aside, I have a friend, Frèdèric, who works for a post-production facility in Paris who spent three years on Peter Jackson’s The Hobbit.
His job was to digitally grade the rushes (“dailies” - the footage shot in-camera each day) because, of course, shooting two cameras (for stereo capture for 3D, from a total of 48 cameras) at 48fps (47.96) at 5K generates a number of problems…
1) A 2K file on a RED shooting at 24fps generates about 11MB per frame (more-or-less, depending on compression settings and aspect ratio). So if we double that for 4K, and double it again for 48fps, and double it again for the two cameras, we’re generating about 88MB per frame per second, and it’s gobbling up hard-drive space at four times the normal rate. Given that there were multiple cameras operating for each shot, with second and third-units shooting simultaneously, you start to generate (conservative) numbers like this:
30 cameras X 5K resolution X 2 (for stereo images to make 3D) X 48 frames per second (each frame being filled with 5K pixels and color information).
- 1 Frame at 5K resolution @ 5,120 pixels X 2,700 pixels =*13,824,000 pixels or 13.8 million*bits of data (does not include color information or 3D)
- 3D doubles the data, so*27,648,000 pixels
- 48 frames per second is*1,327,104,000 pixels or 1.3 billion bits*of data for 1 second of the film
-10 bits for color information (we'll be conservative here, again) @ 13,271,040,000 pixels or 13.3 billion bits of data for 1 second of film
- 30 cameras @ 398,131,200,000 pixels or 398 billion bits of data for 1 second of the film
2) The ungraded footage looks like crap. In order to shoot at a higher frame rate, with two cameras, at 4-5K you need a lot of light. So much light you end up with a set that is so hot the actors can only work for a short period of time, you end up installing custom ventilation that’s so noisy you have to turn it off when shooting, and you end up with footage that looks like the worst-lit daytime television ever. So his job was to apply a grade to the rushes to bring back some contrast and colour to the footage that Jackson and the producers would watch at the end of the day’s shoot. And not just him - they had a whole team working 24/7 in shifts just to grade the rushes. That is not an inexpensive proposition.
3) All that data needs to be sent via a pipeline to a post suite waiting to take the garish footage and apply a grade so it can be sent back to set for Peter, which meant they had to build a custom pipeline to manage the extreme amount of data being generated every day. Which, unsurprisingly caused massive delays because you need to send it one way, grade it and then send it back. There were many instances of the graded rushes being late back to set, because the pipeline could not manage the data demands.
4) Because of 1 and 2 above, you then need to over-saturate everything in-camera, presenting a challenge for art-dept, makeup, prosthetics, wardrobe, production design, who are also working in extreme heat.
While this is somewhat of an extreme example, it’s not an uncommon one for major studio tentpoles and I haven’t witnessed budgets coming
down “thanks to digital”.