Comment Re:It is NOT 3d, you CANNOT get 3d from a 2d scree (Score 1) 255
Enough with the nitpicking, now I will explain why you are still wrong even if we set aside the physical data acquisition issue. Humans perceive 3D by two main methods: stereopsis[1] and parallax[2]. Stereopsis is the synthesis of depth from binocular images. Parallax is depth perception by comparing relative motion from two different monocular images. Stereopsis is limited by the binocular separation distance. Therefore, we use stereopsis up close, and parallax far away. "Up close" can mean anywhere from 10 meters to 700 meters. This reference[3] has a short, easy to read treatment of various factors that affect stereopsis range.
Executive summary: 3D movies will never be really 3D because they cannot simulate parallax.
[1] http://en.wikipedia.org/wiki/Stereopsis
[2] http://en.wikipedia.org/wiki/Parallax
[3] http://arapaho.nsuok.edu/~salmonto/vs3_materials/Lecture14.pdf