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Konica was a Japanese manufacturer of (among others) cameras, camera accessories, photographic and photo-processing equipment, photocopiers, fax machines and laser printers. The company traced its history back to 1873 when pharmacist Rokusaburo Sugiura began selling photographic materials at his store. On August 5, 2003, Konica merged with Minolta to form Konica Minolta.
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The first series of Konica single-lens reflex cameras used the Konica F lens mount, named after the first camera to use it. This was a bayonet mount, and is not compatible with later Konica lens mounts. The flange-to-film distance of the F-mount was 40.5 mm, one of the smallest ever used for a 35 mm SLR. The diameter was 40 mm.
It is not identical with Nikon_F-Mount, which has a much longer flange-film distance of 46.5 mm.
Konica's second series of SLR cameras began with 1965's Auto-Reflex. This line came to an end in 1987 when Konica abandoned the SLR market.
Konica's AR lens mount kept the same flange-film distance that the earlier Konica F lens mount had (40.5 mm), but it has a larger diameter of 47 mm.
Konica SLR lenses were named Hexanon. The quality of most Hexanon lenses is regarded as superb, and many are competitive even today.