Some quotes from what I linked -
Why 3D doesn't work and never will -
...
This guy knows what he is talking about.
http://en.wikipedia.org/wiki/Walter_Murch
No he doesn't know that much really.
But their eyes must converge at perhaps 10 feet away
Then don't do movies where items appear as if they are 10 feet from the audience. Everyone that makes 3D should already know that.
then 60 feet, then 120 feet, and so on, depending on what the illusion is. So 3D films require us to focus at one distance and converge at another. And 600 million years of evolution has never presented this problem before. All living things with eyes have always focussed and converged at the same point.
I don't believe eyes work like that. The focusing "mechanism" (muscles that change the eye shape I believe) is largely decoupled from the one that configures convergence (muscles that change the direction our eyes point at). Besides, when our eyes focus at an item at around 80 feet away, it gets far enough that it's kinda something at "infinite distance". Meaning that items at 60 feet away or 120 or 1000 are all close to "infinite distance" focus setting. There's very little effort to do to refocus between those items, in fact they are mostly non blurry. Try that : look at an item like at 80 feet away and try to tell me items farther or much farther away are really out of focus. For the same reason, the eyes don't really need to make movements to change convergence for items that far away because the change would be very very small. In fact our eyes are always moving even when we focus on some item, very small short movements that our brain corrects itself to make it feel like we are looking at a single point.
No no no. The major reason people got headaches watching 3D films I'd say is because they are blurry. The movie techniques where you force the audience to watch the part of the screen you want by making everything else blurry doesn't work. It worked in 2D kinda I guess (or people got used to it?) but not in 3D when you try to focus on a different plane but since it's prerendered blurry it doesn't work. Nothing more nothing else. Film makers just got to use different tricks to draw the viewer eyes to the part of the image they want. And somehow, videogames went by fine without any such blurring tricks due to a lack of technology to make them, they'll be fine in the 3D future without them.