Cinema formats refer to the various methods used to capture and project films. Common formats include 35mm and 70mm film, which denote the width of the film stock. Digital formats, such as 2K and 4K, describe the resolution of the image, with higher numbers indicating better quality. Different formats can affect the viewing experience, including aspects like image clarity and sound quality. For instance, IMAX is a popular format known for its large screens and immersive sound systems, while DCP (Digital Cinema Package) is used for digital film distribution in theaters.