Sigma Corporation (株式会社シグマ, Kabushiki-gaisha Shiguma^?) is a Japanese company manufacturing cameras, lenses, flashes and other photographic accessories. All Sigma products are produced in the company's own Aizu factory in Bandai, Fukushima, Japan. Although Sigma produces several camera models, the company is best known for producing lenses and other accessories that are compatible with the cameras produced by other companies. A company is, in general, any group of persons, which are known as its members, united to pursue a common interest. ... A camera is a device used to take images (usually photographs), either singly or in sequence, with or without sound, such as with video cameras. ... A lens is: a part of the eye an optical device that may be used in a camera or in a telescope; see lens (optics). ... Running water frozen by flash. ... Monument to the Byakkotai Samurai Aizu ) is a former feudal domain (Han), part of the modern-day Japanese prefecture of Fukushima, formerly a part of Mutsu province. ... Bandai (磐梯町; -machi) is a town located in Yama District, Fukushima, Japan. ... Fukushima Prefecture (福島県 Fukushima-ken) is located in the Tohoku region on Honshu island, Japan. ...

Sigma produces products to work with cameras from Canon, Nikon, Pentax, Konica Minolta and Olympus, as well as for their own cameras. Canon Inc. ... Nikon redirects here; there is also a leader of the Russian Orthodox Church named Patriarch Nikon. ... // The Company PENTAX Corporation (ペンタックス株式会社) TYO: 7750 is a Japanese company founded in 1919 as 旭光学工業合資会社; Asahi Kōgaku Kōgyō Gōshi Gaisha, spectacle lens manufacturers. ... Konica Minolta (コニカミノルタ) is a Japanese worldwide manufacturer of cameras, camera accessories, photo-copiers, fax machines and laser printers formed by a merger between Japanese imaging firms Konica and Minolta announced on January 7, 2003. ... This article refers to a mountain in Greece. ...

Sigma lenses are usually cheaper than the equivalent offering from the manufacturer of the camera body in question, so are therefore often sold bundled with a camera body as a less expensive alternative to the manufacturer's body and lens kit.

Sigma's digital SLRs, the SD9 and SD10, are unusual in their use of the Foveon X3 image sensor. The single-lens reflex (SLR) is a type of camera that uses a movable mirror placed between the lens and the film to project the image seen through the lens to a matte focusing screen. ... The Sigma SD9 is a digital SLR camera produced by the Sigma Corporation of Japan. ... The Sigma SD10 is a digital SLR camera produced by the Sigma Corporation of Japan. ... The Foveon X3 sensor is an image sensor for digital cameras produced by Foveon,Inc. ...

See also

• List of digital camera brands
• Hyper Sonic Motor (HSM)

List of digital camera brands past and present, updated to 2005, but may miss some. ...

External links

• ((English)) Sigma Corporation
• ((English)) Sigma Corporation of America