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Roll film

roll film bg, roll film cameras in current production
Rollfilm or roll film is any type of spool-wound photographic film protected from white light exposure by a paper backing, as opposed to film which is protected from exposure and wound forward in a cartridge The term originated in contrast to sheet film Confusingly, roll film was originally often referred to as "cartridge" film because of its resemblance to a shotgun cartridge The opaque backing paper allows roll film to be loaded in daylight It is typically printed with frame number markings which can be viewed through a small red window at the rear of the camera A spool of roll film is usually loaded on one side of the camera and pulled across to an identical take up spool on the other side of the shutter as exposures are made When the roll is fully exposed, the take up spool is removed for processing and the empty spool on which the film was originally wound is moved to the other side, becoming the take up spool for the next roll of film

Historyedit

Classic 120 negative rollfilm, manufactured by Agfa-Gevaert, with backing paper indicating total exposures available for 45×6, 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 camera1 David Henderson Houston b June 14, 1841; d May 6, 1906 ,2 originally from Cambria, Wisconsin, patented the first holders for flexible roll film23 Houston moved to Hunter in Dakota Territory in 1880 He was issued an 1881 patent for a roll film holder 45 which he licensed to George Eastman it was used in Eastman's Kodak 1888 box camera Houston sold the patent and an 1886 revision6 outright to Eastman for $5000 in 1889278 Houston continued developing the camera, creating 21 patents for cameras or camera parts between 1881 and 190229 In 1912 his estate transferred the remainder of his patents to Eastman2

Various brands of sealed 120 negative and transparency roll films

The most popular rollfilm is the type 120 film format, which is used in most medium-format cameras and roll film magazines for large-format cameras Until the 1950s, 120 roll film was also used in what was then the most simple of snapshot cameras, and box cameras The use of roll film in consumer cameras was largely superseded by 135 and 126 cartridges, but 120 and 220 double length film are still commonly used in medium-format cameras

See alsoedit

  • Film stock
  • Brownie camera
  • Category: Film formats
  • Film format
  • List of color film systems
  • List of film formats

Referencesedit

  1. ^ Archer, Myfanwy Morgan March 1933 "Wisconsin man inventor of folding film roll Kodak features" The Wisconsin Magazine of History 16 3: 235 to 243 
  2. ^ a b c d e Nemenoff, Ben "Houston, David Henderson" ndgov Retrieved 5 September 2010 
  3. ^ 1Hammer, Mina Fisher 1940 History of the kodak and its continuations The House of Little Books pp xv 
  4. ^ 2 US patent #248,179 for Photographic Apparatus is dated October 11, 1881; issued to David H Houston of Cambria, WI
  5. ^ Christopher Beane; Anthony F Janson 2008 Flower Artisan Books p 12 
  6. ^ 3 1886 patent #355084
  7. ^ Hammer, 1940, p55
  8. ^ Peres, Michael R 2007 The Focal encyclopedia of photography Focal Press p 78 
  9. ^ Hammer, 1940, pp55ff

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Roll film


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    Roll film beatiful post thanks!

    29.10.2014


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