by canofhumdingers » Fri Jul 28, 2017 1:18 am
It's actually not bad. I suppose it depends on the movie and how well it's used, but Christopher Nolan uses it quite expertly. If you watch The Dark Knight, The Dark Knight Rises, or Interstellar on blu ray you will see the changing aspect ratio and get a sense of what it was like in the theater (although when it switches to the IMAX it's still cropped vertically b/c the whole image won't fit on a widescreen tv unless it's pillar boxed).
But seeing this films on actual 70mm IMAX was amazing. The majority of the movies are in scope, but many transitional establishing shots expand to fill the screen and key action sequences also expand. But it doesn't just make the image larger (vertically), there is also a noticeable increase in clarity, resolution, and detail. It has the effect of drawing you in and making those sequences more visceral and immersive. Personally, I think it's an awesome experience and not theatrical experiences I've had compared to seeing Nolan's films on 70mm IMAX (or IMAX laser in the case of Dunkirk).
Now, one caveat I do have is actually with Dunkirk itself. Unlike previous films where key scenes or shots would expand to full IMAX size and resolution to give them more impact, in Dunkirk the vast majority of the movie is full on IMAX, and only a few shots here and there shrink down to 35mm scope. In this case I actually think it would have been more effective to shoot the 35mm scenes in academy (1.34:1) ratio which is very close to IMAX's 1.43:1 ratio so that when the film switched between sources, they could've maintained a constant ratio (by very slightly cropping the 35mm footage). The only difference would be a subtle drop in clarity and detail. Then they would've just had to crop everything down for regular theaters instead of just cropping the IMAX footage (again, like 75% of Dunkirk is IMAX 70mm. Maybe more)
Outside of Nolan's films, I've only seen two other Hollywood films on IMAX. The Force Awakens (on IMAX 70mm film), where only one scene (where Rey and Finn escape from Jammu on the Falcon) is in IMAX. And it, like Nolan's work, was an effective way to draw you in to the scene and make it more exciting and immersive.
The other was Rogue One in digital "liemax" 3D. This one was via the "liemax" 2k projector system, but it was on a full size IMAX screen. It did not have a changing aspect ratio and was letterboxed on the screen. I was actually quite impressed with the 3D conversion and was glad I saw it. But I was also glad I had seen it in 2D first.