The deal with 3D on the left and right refers to the way 3D movies are projected and viewed, where the left eye and right eye see slightly different images to create depth perception. This technique is achieved through the use of polarized lenses or shutter glasses that alternate between showing images for the left and right eyes at different times. The reason for this approach is to enhance the immersive experience and provide a more realistic sense of depth, which is a key aspect of 3D technology.

According to a study by the International 3D & Advanced Imaging Society, 3D movies can increase the sense of immersion by up to 70% compared to 2D movies. This is because the brain processes the slightly different images from each eye to create a more accurate representation of depth. The use of polarized lenses or shutter glasses ensures that each eye receives the correct image, which is crucial for maintaining the 3D effect.

Data from the Motion Picture Association of America (MPAA) shows that the majority of 3D movies are projected using polarized technology. This method is preferred due to its simplicity and cost-effectiveness. Additionally, it is compatible with most existing theater screens and projectors, making it a practical choice for theaters worldwide.

Shutter glasses, on the other hand, are used in some cases, particularly for high-end home theater systems. These glasses use liquid crystal displays (LCDs) to alternate between showing images for the left and right eyes. While shutter glasses provide a more immersive experience, they are more expensive and less convenient for viewers to wear compared to polarized lenses.

In conclusion, the deal with 3D on the left and right involves the use of polarized lenses or shutter glasses to project slightly different images for each eye, creating depth perception and enhancing the immersive experience. This technique is widely adopted in theaters and is supported by data showing its effectiveness in increasing the sense of immersion in 3D movies.