How do 3D movies work? Essentially, they present the audience with two slightly different views of the film. How this is done varies with different technologies. Originally, 3D movies used the anaglyph technique, using red green glasses. This is the technique that you must use to appreciate the 3D graphic on this page, since computer screens are still limited with respect to 3D. Increasingly, cinemas make use of polarizing filters to distinguish the two viewpoints, and the audience wears polarising glasses. The polarising filters can be linearly polarizingor circularly polarizing. Circular polarisation is rather difficult to understand but it does have the advantage to being more tolerant of head movement on the part of the viewer. Polarization has to do with how the light wave is oriented with respect to its direction of travel, whereas colour has to do with the wavelengths of the light. Because polarizing separation of the stereo views does not exclude certain colours (as happens in anaglyphs) the movie can be viewed in a much more convincing colour palette
-
Join 40 other subscribers
-
Visitor
-
Archives
- September 2013
- May 2013
- April 2013
- November 2012
- October 2012
- August 2012
- May 2012
- April 2012
- March 2012
- February 2012
- November 2011
- October 2011
- August 2011
- June 2011
- May 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- September 2010
- August 2010
- July 2010
- June 2010
- May 2010
- April 2010
-
Categories