There are different types of 3-D. Back in the 1950's, they used red and blue lens. Today, the systems are more sophisticated, using polarization, and there are different types. Real D is the particular type of 3-D that is used for that particular movie.
There is also "true" 3-D (where two cameras were used to film the movie) and computer-generated 3-D. For instance, the 2-D movie
Titanic, and 2-D
Star Wars movies were converted by computers to 3-D. Most movies are filmed in 2-D and converted to 3-D in post-production (the new
Star Trek movies, for instance, are done this way).
The Hobbit movies were filmed in real 3-D.
Quote:
http://en.wikipedia.org/wiki/Real_D_3DRealD 3D cinema technology is a polarized 3D system that uses circularly polarized light to produce stereoscopic image projection. The advantage of circular polarization over linear polarization is that viewers are able to tilt their head and look about the theater naturally without seeing double or darkened images. However, as with other systems, any significant head tilt will result in incorrect parallax and prevent the brain from correctly fusing the stereoscopic images.
The high-resolution, digital cinema grade video projector alternately projects right-eye frames and left-eye frames, switching between them 144 times per second.
Here is a list of real 3-D and "fake" 3-D movies:
http://realorfake3d.com/
Login
FAQ
Search
roseanne
