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is a designer and manufacturer of cameras and lenses, and a glassmaker, based in Nakano, Nagano Prefecture, Japan. ==History== Cosina is the successor to Nikō (or "Nikoh"), a company set up as a manufacturer of lenses in 1959. In 1966, it started to manufacture 35 mm compact cameras and 8 mm cine cameras, in 1968 it started a glassworks, and a year later started the manufacture of 35 mm film SLR cameras. Nikō changed its name to Cosina in 1973. (The first part of the name is a reference to the ''Koshi'' area within Nakano, where the founder came from; while the 'Na' represents Nakano.) The name Cosina has previously appeared on compact and SLR cameras for 135 film. The CS-2 and CS-3 SLRs were introduced in 1978, followed in 1980 by the CT-1, CT-7 (the world's first all—push-button SLR), CT-10 and CT-20, the CT-1G in 1982 and the CT-9 in 1986. Cosina SLR cameras used either the M42 (Praktica/Pentax) lens mount or the Pentax K (bayonet) lens mount. However, Cosina is probably better known as a manufacturer of cameras and camera components for other brands. During the late 1970s, Cosina made a name for itself in 35 mm rangefinder cameras with a well-built, high quality fixed-lens camera using an aluminum body and a simple shutter-priority autoexposure system. This rangefinder camera was adopted as the basic chassis for several excellent camera models, including the Minolta 7SII, Revue 400 SE, Prinz 35 ER, and Vivitar 35 ES. In 1982, Cosina began to manufacture lenses in a variety of SLR manufacturers' lens mounts. In 1991, it started to produce glass molded aspheric lenses, and in 1996 plastic molded aspherical lenses. Cosina began producing digital cameras in 1997. At about this time, plans were started to produce a new 35 mm rangefinder camera, complete with wide and ultrawide lenses for the Leica screw mount, and also a basic camera — similar to a rangefinder camera, but without a rangefinder or viewfinder — for mounting these. Having obtained the rights to the brand "Voigtländer" from Ringfoto in Germany, Cosina introduced a Voigtländer 15 mm f/4.5 and 25 mm f/4 lens (neither of them rangefinder-coupled) and the Voigtländer Bessa-L body in 1999. It quickly followed with a wider range of cameras (starting with the Bessa-R, with viewfinder and rangefinder; and the Bessa-T, with rangefinder, but no viewfinder); and a set of lenses including the Heliar 12 mm f/5.6 lens, which on its introduction was the widest rectilinear lens ever marketed for still photography. On April 26, 2010, Cosina joined the Micro Four Thirds System Standard Group 〔(COSINA CO., Ltd. Joins the Micro Four Thirds System Standard Group ).〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cosina」の詳細全文を読む スポンサード リンク
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