Rating: 
Summary: Overall, VERY disappointing!
Review: My dad bought this DVD in Arizona after watching the presentation at the IMAX theater but he was disappointed when we watched it at home on our Sharp LCD projector (on a 5½-foot screen). The video quality was VHS-level at best and not even close to what we've become accustomed to from DVD's. The film seemed grainy and the colors were not as distinct and lifelike as they had appeared in the theater. The audio quality was pretty good, but the narration was a bit on the dull side. The camera shots were done pretty well but we were looking forward to more helicopter fly-by shots through the Grand Canyon itself.I hope they re-do this video from scratch and stick to the high-quality film that IMAX theaters are famous for.
Rating: 
Summary: Not the same quality as the IMAX theater.
Review: My dad bought this DVD in Arizona after watching the presentation at the IMAX theater but he was disappointed when we watched it at home on our Sharp LCD projector (on a 5½-foot screen). The video quality was VHS-level at best and not even close to what we've become accustomed to from DVD's. The film seemed grainy and the colors were not as distinct and lifelike as they had appeared in the theater. The audio quality was pretty good, but the narration was a bit on the dull side. The camera shots were done pretty well but we were looking forward to more helicopter fly-by shots through the Grand Canyon itself. I hope they re-do this video from scratch and stick to the high-quality film that IMAX theaters are famous for.
Rating:
Summary: Overall, VERY disappointing!
Review: Strange transfer to DVD. I remember being much more impressed with the IMAX film/format in the theater. The disc is anemic. Scratches were transferred directly from the original print to the disc, also the MPEG-2 compression is so horrible that each motion sequence leaves nausea-inducing video artifacts. There was no telecine operator, or if there was he was smoking dope and never actually watched the film transfer of this turkey. At a mere 38 minutes this seems inexcusable, but at least the film mercifully ends prior to me having to take a second dramamine tablet. Bill Conti's score--awful. Hoping next disc is released directly to the landfill thus bypassing the consumer viewing phase.
Rating:
Summary: Another Rip-Off From Slingshot
Review: The narration is a bore. The transfer to DVD is horrendous...there is frequent flickering on the screen. I had hoped to see more of the Grand Canyon rather than more of the same type of idiocy that was in Slingshot's "Yellowstone". My one-star rating is super generous. If Amazon.com permitted me to do so, I'd give it a negative rating.
Rating:
Summary: A LOW TECH RIP OFF
Review: This DVD is so dark and grainy...but then it dawns on you...you can sit and see the actual joints of the imax screen from which this was RE-filmed! This was no DIGITAL transfer, but actually FILMED INSIDE AN IMAX SCREENING! The graphic quality is horrible! The content would be fine otherwise. Thank God I got this dvd at Target for 9.99. I feel like I was robbed by the dvd manufacturer, Slingshot entertainment. Ouch!
Rating:
Summary: A LOW TECH RIP OFF
Review: This DVD is so dark and grainy...but then it dawns on you...you can sit and see the actual joints of the imax screen from which this was RE-filmed! This was no DIGITAL transfer, but actually FILMED INSIDE AN IMAX SCREENING! The graphic quality is horrible! The content would be fine otherwise. Thank God I got this dvd at Target for 9.99. I feel like I was robbed by the dvd manufacturer, Slingshot entertainment. Ouch!
Rating:
Summary: Disappointing for DVD
Review: This DVD was disappointing for two reasons. One, the color, no matter what the scene is brown. Yes, I realize the Grand Canyon is brown, but its comprised of so many beautiful shades that change with the light throughout the day. None of this is captured in the film. Second, the narration is a mumble at best. It's difficult to hear & after a while, you don't even care. Overall, not a good example of IMAX technology.
Rating: 
Summary: Nice perspective of History of the Grand Canyon
Review: This is more a history lesson on the Grand Canyon than being one of "Hidden Secrets". Although quite informative, it only gives a brief history. The picture quality is pretty good. There are a few places where you can see it was taken directly from film or tape. Nonetheless, it is still very well photographed.
Rating:
Summary: buy the tape
Review: Video quality is not up to DVD standards. Some interesting scenics but very disappointing overall. Score is irritating. I wouldn't invest money in the DVD version (or the tape for that matter). Much better material on this subject exists.
Rating: 
Summary: a very long cut version
Review: william rogers from wirral england,Ihave seen this Imax grand canyon many times on dvd.and twice on the Imax screen.and it was very good and so I bought it on dvd when on holiday. but I was dissapointed to find it was a very bad cut version down to 36-mins and it said of a 24-min making of the grand canyon. but this was not on the dvd, and the run time on the dvd was 60mins. but only run for half the time. apart from that I found it very interesting to watch and I rate it a very good dvd, but sorry that they cut out the 24-min doc of the making.
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