Fire Fairy wrote:And let me explain how 3D works... The glasses are made so that one lens pops inward slightly, while the other pops outward, changing the way your eyes see the image.
I'm not sure if that's how 3D works. I've never heard of creating a 3D effect by using different degrees of curvature on the glasses.
I do know of two ways that are used to make a 3D image:
One way is to color the two images: one red, and the other cyan. Then you superimpose the two images. You have to wear a set of glasses with a red gel over the left eye and a cyan gel over the right in order to see the film properly. The red eye can only see the red image and the cyan eye can only see the cyan. The brain blends the colors and the images and, viola, you get a 3D image.
Another way is to take the two images and to project the one image polarizing the light clockwise, and to project the other image polarizing the light counter-clockwise. The audience then wears a pair of glasses in which one lens is polarized clockwise and the other counter-clockwise, so again, each eye is seeing only the image intended. The brain does the blending, and, tada, the 3D image appears!
Walden was very kind to explain the process in their study guide to "Journey of the Center of the Earth." You can find it here:
http://www.walden.com/guide/journey_to_ ... the_earth/