The creation of three-dimensional movies uses a process called stereoscopic cinematography.
Two cameras are mounted on a rig, side by side, each capturing a slightly different perspective of the scene.
The two images are then combined to produce the illusion of depth. The brain interprets the difference between the two images and creates a sense of three-dimensional space.
Special glasses are worn that filter out the double image to make the experience even more realistic. This allows each eye to see only one perspective, just as it would in real life.
Unlike the first 3D movie in 1922, the result is an immersive viewing experience that makes audiences feel as though they're inside the movie.