What is the common size of film used in many cameras?

The common size of film used in many cameras is 35mm. This format has been widely adopted in the photography industry for both amateur and professional use due to its ability to provide a good balance between image quality and ease of handling. The 35mm film is particularly known for producing high-resolution images and has become the standard among still photography and cinematography.

The 35mm format originated from the motion picture industry in the late 19th century and has since been adopted by numerous types of cameras, including single-lens reflex (SLR) cameras, rangefinders, and many compact models. Its versatility, availability, and compatibility with a wide range of lenses and accessories have solidified its status as the most popular film size in the market.

While other film sizes such as 120mm, 110mm, and 16mm have their specific uses—such as medium format photography and specific types of motion pictures—they are not as universally recognized or utilized as 35mm film.