3D cinematography is a filmmaking technique that creates the illusion of depth in a two-dimensional image. By using two cameras positioned slightly apart, it captures images that mimic how human eyes perceive the world. This technique enhances the viewer's experience, making scenes feel more immersive and realistic. In 3D films, viewers often wear special glasses that help separate the images for each eye, allowing the brain to combine them into a single three-dimensional picture. This technology is commonly used in various genres, from animated movies to action films, to engage audiences more effectively.