ScottNBecky said:
Oh and a side note, I tried to fim Philharmagic by placing the 3-D goggles (one side) over the camcorder and it worked great.
You probably only got 2-D not 3-D which is fine as you can still view the movie and it won't be blurry but unfortunately it will not be 3-D anymore.
This was an article posted on rec.arts.disney.parks by Randy Berbaum:
Lets examine how the 3d movie works. There are two seperate images projected on the screen, overlapping. Each of these images is projected with polarized light. The one to be viewed by the left eye is polarized horizontally, and the one for the right eye is polarized verticly (actually the polarizations are more like 45 deg right and 45 deg left, but you get the idea). Now the glasses have two polarized lenses that only allow the image that has the matching polarization to pass through to the eye. This way each eye is seeing a slightly different image which creates the impression of 3d.
Now a video camera will record both of the images at the same time and ignores the polarization. It also has no way to record the polarization. So if a video is made and then viewed with the polarized glasses the image would be totally unpolarized and so both images would be going to both eyes. No 3d. There are a couple of ways to video a 3d movie. One is to use a polarizing filter on the front of the lens, alligned with one of the images. This will allow you to record ONLY ONE image, either the right eye one, or the left eye one, but not both. I have done this, and it works, but turns the movie into a 2d movie. The other is to use an expensive 3d video camera which has 2 lenses that record the two different images seperately (each lens will use a different polarizing filter aligned with the correct image). Then the video will have to be played back with either a specially made prigection TV with the two images superimposed, and each image being reproduced with polarized light, properly alligned. Then the glasses would work. Or the two images could be merged onto a standard TV with a colored filter replacing the polarizing filters to make the two images be properly routed to the right eye. The specialized equipment to record and recreate these 3d images in either way is VERY expensive and very hard to come by for the normal consumer.
So if someone claims that they were able to video tape one of these 3d movies with a normal video camera, and used the polarized glasses at home with a standard TV to recreate the full 3d effect, they are fooling someone, you or themself.
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