A film format is a technical definition of a set of standard characteristics regarding image capture on photographic film, for either stills or movies. It can also apply to projected film, either slides or movies. The primary characteristic of a film format is its size and shape.

In the case of motion picture film, the format may also include audio parameters (though often not). Other characteristics usually include the film gauge, pulldown method, lens anamorphosis (or lack thereof), and film gate or projector aperture dimensions, all of which need to be defined for photography as well as projection, as they may differ.

See List of film formats

See Image sensor format

^(A) Unless otherwise noted, all formats were introduced by Kodak, who began allocating the number series in 1913. Before that, films were simply identified by the name of the cameras they were intended for.

For roll holder means film for cartridge roll holders, allowing roll film to be used with cameras designed to use glass plates. These were spooled with the emulsion facing outward, rather than inward as in film designed for native roll-film cameras. Types 106 to 114 were for Eastman-Walker rollholders, while types 50 to 54 were for Graflex rollholders.

Ray Douglas Bradbury (born August 22, 1920) is an American fantasy, horror, science fiction, and mystery writer. Best known for his dystopian novel Fahrenheit 451 (1953) and for the science fiction stories gathered together as The Martian Chronicles (1950) and The Illustrated Man (1951), Bradbury is one of the most celebrated among 20th and 21st century American writers of speculative fiction. Many of Bradbury's works have been adapted into television shows or films.

Bradbury was born in 1920 in Waukegan, Illinois to Esther Moberg Bradbury, a Swedish immigrant, and Leonard Spaulding Bradbury, a power and telephone lineman.

Ray Bradbury is related to the American Shakespeare scholar Douglas Spaulding. He is also directly descended from Mary Bradbury, who was tried, convicted and sentenced to hang as a witch in Salem, Massachusetts in 1692. She was married to Captain Thomas Bradbury of Salisbury, Massachusetts.

Bradbury was a reader and writer throughout his youth who was greatly influenced by the writings of Edgar Allan Poe. Bradbury was especially impressed with Poe's ability to draw readers into his works. In his youth, he spent much time in the Carnegie library in Waukegan, Illinois, reading such authors as H.G. Wells, Jules Verne, and his favorite author, Edgar Rice Burroughs who wrote novels such as Tarzan of the Apes and The Warlord of Mars. He loved Burroughs' The Warlord of Mars so much that at the age of twelve he wrote his own sequel. An aunt read him short stories when he was a child. He used this library as a setting for much of his novel Something Wicked This Way Comes, and depicted Waukegan as "Green Town" in some of his other semi-autobiographical novels—Dandelion Wine, Farewell Summer—as well as in many of his short stories.