, with backing paper indicating total exposures available for 4.5×6, 6×6 and 6×9 cm camera film-frame sizes In 1881, a farmer in Cambria, Wisconsin, Peter Houston, invented the first roll film camera. His younger brother, David, filed the patents for various components of Peter's camera. David Henderson Houston (born June 14, 1841; died May 6, 1906), Houston moved to
Hunter in
Dakota Territory in 1880. He was issued an 1881 patent for a roll film holder that he licensed to
George Eastman and was used in Eastman's
Kodak 1888
box camera. Houston sold the patent and an 1886 revision outright to Eastman for $5000 in 1889. Houston continued developing the camera, creating 21 patents for cameras or camera parts between 1881 and 1902. In 1912, his estate transferred the remainder of his patents to Eastman. and
transparency roll films The most popular roll film format is
120 film, which is used in most
medium format cameras and roll film magazines for
large-format cameras. Until the 1950s, 120 roll film was, with the smaller
127 film, also used in the simplest of box cameras and other
snapshot cameras. The use of roll film in consumer cameras was largely superseded by
135 and
126 cartridges, but 120 and 220 (double length) film are still commonly used in medium format cameras. ==Automatic film speed sensing==