Film formats refer to the various types of film stock used in photography and cinema. Common formats include 35mm, 16mm, and 8mm, each differing in size and quality. 35mm film is widely used in professional filmmaking, offering high resolution and detail, while 16mm is often used for documentaries and educational films due to its lower cost. 8mm film, popular in home movies, provides a more nostalgic feel. In addition to traditional film, digital formats have emerged, such as 4K and HD, which allow filmmakers to capture high-quality images without the need for physical film. These digital formats have revolutionized the industry, making filmmaking more accessible and versatile.