I had a few more thoughts...
No implied meaning with the bottle of booze, but this is exactly what I found the movie to be like:
Versus a realistic depth of field would be more like this:
I'm not sure if the movie was made with strong DOF intentually (for effect/artistic reasons) or because of technology limitations. I work in a field that does some 3D rendering, I'm no expert, but a lot of times if there is a time, space or resource crunch a lower resolution will be used for the background and then blurred for a depth of field effect. This isn't really a 'bad' thing, as basically everything 3D has some sort of limitations and you have to decide where to spend time and resources based upon your money and time budget. This movie had a big money budget, but if the resource 'budget' wasn't spent well, a lot of processing power can be spent on things that people don't care about or there can be a lack of continuitity (like some things look great where others look bad). Even with huge rendering farms (huge clusters of computers that render frames and then combine a 'composite') they may have still had some limitations. If they saw some of the moving action stuff didn't look so good, or didn't match the focused action, they may have upped the motion blur to hide problems. A typical render on my, fairly fast, computer that would take 2 hours might only take 20 minutes at a farm, but if you have a long movie like this, with tons of green screen too, it is a giantantic undertaking. The 3D of the organic forms in this movie are especially impressive, the textures and mapping are extremely detailed. To give this some perspective, for me to render just one frame of those forest scenes on my computer, I bet it would take half a day, on my high-end workstation. ONE FRAME. For a few seconds of the movie, I bet it would take my computer all week. Everything is raytraced (the computer 'fires' light rays and lets them bounce around with respect to the physics of light and the materials), almost no grain (with what is in focus), so they must have let it cook a long time. In an action scene, they'd need to basically re-render every frame, so computationally it becomes /much/ greater. So, the blurring action wasn't a surprise to me once I thought about it more.
I remember reading in one of my magazines that they used roughly 20GB per minute of storage, 24 hours a day, for nearly four months to make this movie. Something like that. That's massive, considering a farm that could do 20GB per minute of rendering has to have some serious power.
So, I'm not really taking away anything from the movie, it still is technologically impressive. Maybe if I was to be the art director of the movie (which, I would be not qualified for), I would have used resources differently to increase the focus of the background during action scenes.
End of my ramble.