| Media type | Memory card |
|---|---|
| Capacity | over 2 TB |
| Developed by | CompactFlash Association |
| Dimensions | 38.5 mm × 29.8 mm × 3.8 mm |
| Usage | Digital cameras |
XQD card is a memory card format primarily developed for flash memory cards. It uses PCI Express as a data transfer interface.
The format was first announced in November 2010 by SanDisk, Sony and Nikon, and was immediately picked up by the CompactFlash Association for development.[1] The final specification was announced in December 2011.[2][3]
The new format is targeted at high-definition camcorders and high-resolution digital photo cameras. It would offer target read and write speeds from 1 Gbit/s (125 Mbyte/s) to about 500 Mbytes/s[3] and storage capabilities beyond 2 TB.[4]
Sony has also said their Broadcast Camcorders (XDCAM and XDCAM EX) will also support the XQD cards. For their broadcast products the XQD card will be classified as a secondary media as XQD is based around a DLSR consumer technology however the cards will support acquisition in the broadcast quality HD422 50Mbps.
The cards are not backward compatible with CompactFlash or CFast cards. Comparing to CFast, both are designed as the replacement of 18-years-old CF standard, XQD has major backers such as Sony and Nikon.
In January 2012, the first XQD card was announced by Sony, declaring a 1Gbit/s read and write speed.[5] Currently, Sandisk, Lexar, and Kingston have no plans to produce XQD cards, leaving the future of the format in doubt.[6][7]
The Nikon D4 is the first camera to support the XQD format.[8][9]
See also [link]
References [link]
- ^ Engadget: Sandisk, Sony, and Nikon propose 500MBps memory card with more than 2TB capacity
- ^ CompactFlash Association Announces XQD Card Format
- ^ a b Engadget: CompactFlash Association readies next-gen XQD format, promises write speeds of 125 MB/s and up
- ^ "CompactFlash Association Announces the Recently Adopted XQD(TM) Specification as a New Memory Card Format". CompactFlash Association. 7 December 2011. https://compactflash.org/2011/compactflash-association-announces-the-recently-adopted-xqdtm-specification-as-a-new-memory-card-format/. Retrieved 17 January 2012. "Actual Write Speeds Target 125MB/sec and Higher"
- ^ "Sony Announces World’s First XQD Memory Cards". https://techcrunch.com/2012/01/06/sony-xqd-memory-cards/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Techcrunch+%28TechCrunch%29. Retrieved January 8, 2012.
- ^ "Sandisk, Lexar, Kingston not making new XQD cards". https://www.techradar.com/news/photography-video-capture/cameras/sandisk-lexar-kingston-not-making-new-xqd-cards-1055347. Retrieved January 25, 2012.
- ^ Shankland, Stephen (January 13, 2012). "SanDisk on new XQD memory card format: 'Meh'". CNET. https://ces.cnet.com/8301-33363_1-57358446/sandisk-on-new-xqd-memory-card-format-meh/. Retrieved January 25, 2012.
- ^ "Nikon announces first camera to use new XQD cards". arstechnica.com. 2012 [last update]. https://arstechnica.com/gadgets/news/2012/01/nikon-d4-first-camera-to-use-new-xqd-cards-sony-to-make-them.ars. Retrieved 7 January 2012.
- ^ "When There Is No Second Chance: The New Nikon FX-Format D4 Multi-Media Digital SLR is The Definitive Unification Of Speed And Precision « Nikon Pressroom" (Press release). Nikon Inc.. 2012 [last update]. https://press.nikonusa.com/post/2012/01/05/when-there-is-no-second-chance-the-new-nikon-fx-format-d4-multi-media-digital-slr-is-the-definitive-unification-of-speed-and-precision/. Retrieved 7 January 2012.
External links [link]
|
||||||||||
.svg)
