3D - 2

Why are the 3D glasses that came with the CORALINE movie different from the ones used in the Theater?

When I went to see CORALINE in the Theater we were given these 3D glasses that looked liked sun glasses - both lenses tinted dark. But the glasses that came with the CORALINE DVD 3D Release are the "Old School" Red & Green 3D Glasses - WHY?

Public Comments

1. My guess is they're cheaper. The theater uses the sunglasses type over and over again. But it could also do with the type of screen the red/blue/green kind may only work on a TV screen but the others may work on whatever kind of theater screen hope this helps a bit :)
2. I have heard that also. I don't know why but I can speculate. It could be because the "3-D" process used for the theater version is different than the process used for the home television version because it has to operate on plasma,LCD and DLP screens. What we are looking at in the theater is a reflection of a projected image At home we are looking at a pure image not a reflection. By the process being different it would possibly require different type of glasses to get a satisfying 3-D effect. imho
3. The answer you are looking for is that 3D cinemas these days like RealD use Circular Polarized 3D glasses and for home viewing on a TV / LCD / Plasma / Projector the usual method is for displaying 3D is anaglyph. Such as the Trioscopics Green / Magenta glasses that came with your Coraline movie. Very basically the way RealD 3D polarized movies work is that each movie alternately displays a left side and then the right of the movie extremely quickly, so fast that you cannot see the flicker. Most likely at least 120fps +. The polarization of the light / photons exiting the projector is changed in sync each time the left and right frames are displayed. The Circular polarized glasses you wear are matched to this configuration so that your left eye sees the left frames and your right eye sees the right frames or vise versa if it has been desiged as a cross-over, which is the way our eyes work. Just as our eyes toe in / point in a little each eye also sees the world from a slightly different perspective, just like in the 3D movie. When your brain merges these two signals, bingo you see in 3D. Unfortunately our home equipment currently can't change the polarization so we have to use an anaglyph format which is aiming at giving you the same result but unfortunately has it's downfalls. If you want to read about the complexities of viewing anaglyph images / movies and all the variations that come in to play that effect the end 3D result this is a good start article to read. http://cmst.curtin.edu.au/publicat/2004-08.pdf The good news is depending on your budget you should be able to have the same experience at home as in the 3D cinema in about 2 - 5yrs (guesstamation). We are talking not only movies but broardcast TV as well. Welcome to the future. Try these couple of links for further info as well. http://www.oz3d.com.au/downloads/3D_Movie_List_Anaglyph_Format.pdf http://www.oz3d.com.au/3dlinks.php Cheers 3D Crazy