Nikonos
Nikonos is the brand name of a series of 35mm format cameras specifically designed for underwater photography launched by Nikon in 1963. The early Nikonos cameras were improvements of the Calypso camera, which was an original design by Jacques-Yves Cousteau and Belgian engineer Jean de Wouters. It was produced in France by La Spirotechnique (currently Aqua Lung) until the design was acquired by Nikon to become the Nikonos. The Nikonos system was immensely popular with both amateur and professional underwater photographers. Its compact design, ease of use, and excellent optical quality set the standard for several decades of underwater imaging. Nikon ceased development and manufacture of new Nikonos cameras in 2001, but the camera remains popular, and there is a large and active secondary market. History Nippon Kogaku trace their underwater camera history back to 1956, when the company developed an underwater housing for the Nikon S2 rangefinder camera, which was marketed in May as the Nikon Marine. At approximately the same time, Jean de Wouters was building the first prototypes of the Calypso for La Spirotechnique, which went into serial production in 1961. However, La Spirotechnique was not experienced with camera design and manufacture, so they approached Nippon Kogaku to license the production and sales rights in June 1961; the two companies signed a contract in February 1962 granting the worldwide sales and distribution rights to Nikon outside France and the European Economic Community. Nippon Kogaku acquired the patent to the Calypso in 1963 and began manufacturing the Nikonos (later designated the Nikonos I) equipped with Nikkor optics instead of the original SOM Berthiot and Angenieux lenses. The "Workhorse of the War" Because of its waterproof housing, lens options, and toughness, the Nikonos was an important tool for photographers working in the steaming jungles, flooded rice paddies, and rain-lashed battlefields of the Vietnam War. The wire services loaded their Nikonos cameras with Tri-X, Ektachrome-X or High-Speed Ektachrome. Discontinued Nikon continued to manufacture Nikonos V bodies until 2001, when it formally announced it was terminating the series. Without any new models in years and with digital imaging taking over the market, Nikon saw no reason to continue the series. However, in the French Magazine "Focus-Numerique" Mr. Tetsuro Goto, the Director of Laboratory Research and Development at Nikon Japan said on the future of Nikonos: “personally I think the Nikonos will be reborn in the future.” Design and operation The numbered Nikonos cameras are often called rangefinder cameras, but in truth they are scale focus cameras as there is no rangefinder. The viewfinder is used purely to compose the shot, and to display exposure information on bodies with internal metering (Nikonos IV-A and V). Focus distance is set with an outsized dial mounted on the left side of the lens barrel (as seen from the operator's point of view), and the aperture is set with a dial mounted on the right. Refraction affects the estimated distance underwater by making objects appear 25% closer than they actually are; for example, an object