The K-20 is an aerial camera used during World War II. Fairchild design, made under licence for military contract. Approximately 15,000 were manufactured by Folmer Graflex Corp. in Rochester, NY between 1941-1945. They use a 5.25"x20 to 5.25"x200 foot Roll Film, with an image size of 4x5 inches. Lenses were 6 3/8" f/4.5 adjustable diaphragm, non interchangeable, made by either Kodak, Ilex, or Bausch & Lomb, as available at time of order. An interesting feature is the use of a vacuum to keep the film flat.
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