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Sony Alpha, stylized as Sony α (Greek letter alpha), is a camera system introduced on 5 June 2006. It utilizes and expands upon Konica Minolta camera technologies, including the Minolta AF SLR lens mount, whose assets were acquired by Sony after the end of Konica-Minolta's photography operations in early 2006. Sony also has an 11.08% ownership stake in Japanese lens manufacturer Tamron, which is known to have partnered with Konica Minolta and Sony in the design and manufacture of many zoom lenses. Prior to the acquisition by Sony, the ''α'' branding had already been used on the Japanese market by Minolta for their AF camera system (marketed as "Dynax" in Europe, and "Maxxum" in North America). Sony adopted the name "A-mount system" for the Minolta AF lens mount, which has been retained in their new SLR range. Sony's entry into the DSLR market dates back to July 2005 where a joint venture with Konica Minolta would have resulted in both companies marketing an updated line of DSLRs to the masses. Between 2006 and 2008 Sony was the fastest growing company on the DSLR market, reaching 13% market share in 2008 to become the third largest DSLR company in the world.〔(【引用サイトリンク】title=dSLR Worldwide Market Share, 2006-2008 )〕 In May 2010, Sony introduced two α NEX mirrorless interchangeable lens cameras equipped with the new proprietary Sony E-mount. A-mount lenses can be used in E-mount cameras with an adapter - four different adapters are available from Sony alone. ==Camera bodies== (詳細はDSLR design with SLT cameras, where the "SLT" stands for "single-lens translucent" which refers to a fixed beam splitter in the image path. Sony SLT can shoot movie files at Full HD 1080p AVCHD with continuous phase detection autofocus.〔Sony SLT-A55 Review: http://www.dpreview.com/reviews/sonyslta55/〕 Along with the α33 and α55 cameras, Sony also announced one of the last Sony DSLRs - the α560 which can also shoot movie files at full HD stereo 1080p AVCHD, but with limited manual controls and no continuous AF.〔http://www.dcresource.com/news/newsitem.php?id=4175〕 These three cameras use the same technology Sony Exmor APS HD CMOS sensor. The α33 and α55 are SLT based (fixed translucent mirrors) and can take movie files with continuous Auto Focus, whereas DSLRs using reflex mirrors typically cannot, at least not without limitations.〔http://www.dpreview.com/news/1008/10082421sonyslta55a33.asp〕〔http://news.sel.sony.com/en/press_room/consumer/digital_imaging/digital_cameras/dslr/release/58159.html〕 Alpha 900.jpg|Sony α900 with Sony SAL-135F18Z Sony SLT-A55 01s5.jpg|Sony α55 with SAL-1680Z Sony SLT-A58 with SAL18-55II (2).JPG|Sony α58 with SAL-1855-2 Sony A77.jpg|Sony α77, flagship APS-C camera 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「Sony Alpha」の詳細全文を読む スポンサード リンク
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