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XD-Picture Card
xD-Picture Card is a flash memory card format, formerly used in digital cameras made by Olympus and Fujifilm. The xD in the xD-Picture Card stands for eXtreme Digital. It is not used in any cameras currently in production.
xD cards are available in capacities of 16 MB up to 2 GB.
== History ==
The cards were developed by Olympus and Fujifilm, and introduced into the market in July 2002. Toshiba Corporation and Samsung Electronics manufactured the cards for Olympus and Fujifilm. xD cards were sold under other brands, including Kodak, SanDisk, PNY, and Lexar, but were not branded with the respective companies' logos, except for Kodak. Previously, xD competed primarily with Secure Digital (SD) cards, CompactFlash (CF), and Sony's Memory Stick. Because of its higher cost and limited usage in products other than digital cameras, xD lost ground to SD, which is broadly used by cellular phones, personal computers, digital audio players and many other digital cameras.
Olympus began to move away from the xD format with the release of the E-P1 camera, which supported only Secure Digital memory cards. As of Spring 2010, all new Olympus cameras announced at the 2010 Consumer Electronics Show and Photo Marketing Association International Trade Show can use SD cards. This changeover to the SD card format has never been officially announced by Olympus Corporation. The higher-end DSLR cameras such as the E-3 and E-5 among others continue to use Compact Flash cards as well.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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