[Wired]

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7. What about the 3D?
This is probably one of the only movies where I would say that seeing it in 3D is worth it. Stanton made this movie to use 3D effects just to give the movie depth. This means that there are no “gimmicks” that use the 3D to overwhelm the viewer with “jumping out of the screen” surprises. Also this movie is filmed in primarily desert type regions, so the subtle darkening effect that 3D glasses tend to have on movies is not as noticeable. That being said, seeing it in 2D would not diminish the quality of the movie either. …

Read the full story here: http://www.wired.com/geekdad/2012/03/10-things-john-carter-rewind/