Rhi, do NOT, I repeat, do NOT see a movie at IMAX (unless you have already and actually like getting sick)
Last year, my wife and I went to see HP: order of the phoenix at the local IMAX and it was VERY difficult to watch. On a normal wide aspect screen, when you look at two characters talking to eachother, one on either side of the screen, all you have to do is look forward.
On Imax, the same scenario is left and right. You literally have to turn your head to the right to see something happening on the right side of the screen and turn your head left to see the same thing left. It was so disturbing to watch that I was dizzy walking out of the place.
and I'm fairly sure that the dizziness wasn't caused by the bottle of wine we consumed prior to the movie!
Regardless, it's tough to watch an action film on IMAX.
Having said all of that, I AM SO there with this movie. I can't wait. I thought Batman Begins was one of the greatest movies ever...this one looks so cool.