XQD
| Storage medium XQD
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| General | |
|---|---|
| Type | Semiconductor memory |
| capacity | from Sony: 32 GB to 256 GB |
| lifespan | Unlimited reading |
| size | 38.5 mm × 29.8 mm × 3.8 mm |
| use | Professional digital cameras and camcorders |
| origin | |
| Launch | 2011 |
| predecessor | CompactFlash |
XQD is a memory card standard that is used, among other things, for digital photography and communicates via a PCI Express interface.
The XQD-1.0 standard initially provides a transfer rate of 2.5 gigatransfers per second, later PCI-Express 2.0 with 5 GT / s will be used. The dimensions are 38.5 mm × 29.8 mm with a thickness of 3.8 mm. The XQD has a slightly smaller area than a CF card and is thinner than a CompactFlash Type II card, but thicker than a CompactFlash Type I card.
The first camera with an XQD card is the Nikon D4 ; it was presented in January 2012. The Sony FDR-AX1 is the first camcorder to use only the XQD card as a storage medium; it was presented on September 5, 2013. The high write rate of an XQD card allows this camcorder to record videos with an image resolution of 4K ; this corresponds to four times the resolution of HDTV .
Currently (as of 08/2017), according to the manufacturer, XQD cards (series G) achieve a read speed of 440 MB / s and a write speed of 400 MB / s; these cards are available with a storage capacity of up to 256 GB. This writing speed should enable the recording of 4K / 60p videos.
Web links
Individual evidence
- ↑ sony.de: Sony FDR-AX1 camcorder. September 5, 2013, accessed September 5, 2013 .