Going by memory: Apollo 13, Star Wars: Episode 2, Transformers and Transformers 2 all had different cuts (different run times) just for IMAX.
These two movies were actually edited down to a SHORTER runtime for IMAX because of the limitation of the 70mm platters at the time. They released this version of Apollo 13 on DVD and it was still edited down making it completely pointless.
The IMAX version of Transformers 2 was also released on blu-ray as a walmart exclusive.
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You don't need IMAX "enhanced" to see those versions from the same disc though.
You don't need IMAX Enhanced hardware to see the IMAX versions of movies.
Until they add some real tech beyond regular HDR, DTS:X, and trying to fool with my carefully set crossovers, hard pass.
IMAX Enhanced doesn't require adding "some real tech beyond regular HDR, DTS:X". Can you give me examples of what that "real tech" would be? Their 12-channel mixes get no benefit from anything beyond a typical 7.1.4 layout. It's about having the option to get a version of the movie that hasn't been seen outside of IMAX theatres.
My question is... If I buy Spiderman: Far From Home through FandangoNow on a non IMAX Enhanced TV, will I still get the expanded ratio version?
The TV does not determine the ratio, that's baked right into the streaming content. So, the answer is yes, so long as the movie is released that way. It is absolutely a fact that IMAX Enhanced video simply uses HDR10 (or HDR10+) and is compatible with all HDR TVs. The idea is an IMAX Enhanced TV or projector will do an optimal job of playing it back, but you can play IMAX Enhanced content on a good HDR TV or projector that's not IMAX Enhanced and still get a great experience from it.
Long story short, on the video side of things you can enjoy IMAX Enhanced on any calibrated HDR10 capable display, the aspect ratios and proprietary post-processing (noise/grain reduction etc.) are baked right into the content itself.
Are we to assume the 4K/UHD version of Spider-Man: Far From Home on FandangoNow, is the IMAX Enhanced version. Movie is supposed to be released tomorrow.
While FandangoNow has pledged support, I don't think they've actually begun streaming anything in IMAX Enhanced. I haven't seen anyone post that it's running there yet. I think the only way would be through Sony's Privilege app which is only on Sony TVs. But you never know. Tomorrow could be a first.