This was the first film I've watched in 3D and the odd thing I found about watching it in 3D was that your focus is intentionally directed (you might even say forced) towards certain areas/characters on screen, to the extent that other actors etc, still in the foreground, are out of focus. It took me a while to adjust to it cos it seems a bit weird when one of the actors who is speaking is out of focus, but I guess that's part of how the 3D effect is achieved.