Prelude

Digital 3D is different technology from Imax3D.
You can wiki it.
I watched the Digital 3D because I couldn't buy Imax 3D, it's always full.
I was going to puke in the first hour of the movie, then my eyes/brain finally adjusted and feel it's nature after 2:30 hr.

I have my prescription glasses on too.  You have to adjust where to focus your eyes on, because if you look at things that the director intentionally blurred, then you will get dizzy soon.  Just focus what the director wants you to see.