How do they make 3D movies?
In: 3
They shoot it with two cammeras next to each other.
That way you get one movie for each eye(with a little difference in perspective), and thats what makes it 3d just like your real eyes do that.
They film it twice at the same time from two slightly different angles. This is exactly how your eyes see 3D, by being in two slightly different places, they see everything at slightly different angles. You brain then stitches the two images together into a single 3D image.
When the film gets projected, there’s two images being projected. In the old 3D, it was a red image and a blue image, hence the red and blue glasses. In modern 3D, it’s horizontally polarized light and vertically polarized light, the 3D glasses being polarization filters, one vertical and one horizontal. Your eyes get two slightly different images, and your brain stitches them together into a single 3D image.
We’ve understood the idea behind that for a long time, the stereoscope was invented in the 1830s, two images taken from slightly different angles are shown to a person through a device such that each eye gets one image, and your brain stitches them together.
Fun fact: you can turn a 3D movie into a 2D movie with polarized sunglasses. Polarized sunglasses are vertically polarized. Wearing them.means you’ll only see one of the two.images in both eyes.
Fun fact: if you and someone else are wearing 3D glasses, if you close one of your eyes, one of their lenses will look opaque. If you close the other eye, the opaque lens switches.
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