Google 'Liemax'. Basically a lot of IMAX theatres stopped supporting the 70mm 'analogue' setups and converted to more modern digital setups, that unfortunately don't represent the original 70mm very well at all. In fact, it's a total difference.
Oh snaps, that must've been the type of movie screen at the Smithsonian from a while back. I remember when I saw an imax movie back when I was little kid in the Smithsonian, the movie screen was as big as the one on the far right of that pic. When I was older I decided to catch a flick at the movie theater that was in imax and it was no where near the size of what I remembered seeing back in the day.
I have loved seeing the few films filmed with Imax in Imax theater's, but digital projection is so much better to me, plus it's pointless see a movie in Imax that wasn't filmed with the Imax cameras, there have been a few digitally shot films using 1:90 aspect at Imax theater's but those are few and far between.
It didn't occur to me until I was sitting in the IMAX before Interstellar started that it might actually be projected on film. Sure enough, I was VERY happy to see it was shown on 70mm film... It's the first movie I've seen projected on film in years, and made made my very nostalgic.
...The last movie I saw projected on film outside of a premium format was X-Men First Class, and even in the old theatre I saw it in, it looked phenomenal. It was tough going for years, when theatres could barely kept their projectors focused, but when film is projected like, there's nothing like it.
Hmm going to New England Aquarium tmrw in Boston and see they have a true IMAX theater might have to check it out. Jordan's Furniture also have Interstellar playing in their theaters which are both true IMAX.
Unfortunately it's the economics of the situation. It's getting to a point where the documentaries are starting to debate releasing digital only and most of the big studios are already not supporting the format for feature length films. To my knowledge Interstellar was the last feature length. :/
The max length of an 70mm Imax film is 2 hours and 49 minutes. It requires a pair of really huge film platters to pull off without having to split the film into parts, etc. This is why when you see feature length films in the format you don't get trailers, there just isn't space left on the platter to have them.
-Traditional IMAX: 70mm, Big flat screen, Some 3D. It's what the graphic in this thread is comparing to. This is probably the one most people think of when they think "Real IMAX"
-IMAX Dome (Omnimax): 70MM, Big dome screens that cover your entire field of vision, No 3D options. These screens put you literally in the middle of things but if you watch a feature length film on one, you get curvature at the ends of the screen. It's probably my favorite for documentaries though. You feel like you're flying. These are also used a lot in movie rides (Back to the Future, Soarin', etc.)
-Theatrical IMAX: What you have at your local movie theater. Much smaller screen, primarily digital, 3D. It's the LieMax folks! They can look pretty but it's nothing compared to it's bigger brothers. You're basically paying for two theaters that have had their middle wall knocked down.
The fuck are you talking about? 70mm film doesn't have a resolution because it's FILM. Theoretically speaking, most 35mm film stock has a theoretical scan resolution of around 4-8K. IMAX 70mm film stock theoretically can scan up to 70 megapixels.
I saw The Dark Knight Rises at the Navy Pier 70mm IMAX in Chicago. It was a great experience, but even after playing for only a week, there was lots of dirt and dust on the print that could be distracting at times.
the bigger issue imo are those 'premium' things theaters are offering now. Regal has RPX and AMC has something too.
charge you IMAX ticket prices for bigger screen (same picture resolution as normal theater) and way too loud speakers that are the same quality just everything pushed to 11. with slightly better seats.