A sub-miniature camera is a type of camera that uses a film format smaller than 35mm, making it highly compact and portable. These cameras were often designed for convenience, discreet photography, or novelty purposes, providing a lightweight alternative to standard 35mm cameras while still producing usable photographic results. Because of the smaller film size, image resolution and detail are generally lower than standard formats, but the trade-off is the extreme portability and ease of carrying the camera in a pocket or small bag.
Sub-miniature cameras have historically been used in spy photography, experimental photography, and casual snapshot situations, where size and discretion were more important than large prints. Some models employ specialized lenses and focusing systems to compensate for the limitations of the smaller negative, and modern digital equivalents can simulate the compact and convenient nature of sub-miniature cameras while offering improved image quality. These cameras highlight the balance between film economy, portability, and photographic creativity.