The SDXC card specification has been announced for more than a year now. However, it’s only now that we are starting to see products supporting this new specification. There are a few important things to note about SDXC cards and how they fit into photographers’ gear bags.
The SDXC specification comes from the SD Association, which is an industry standards organization founded by Panasonic, SanDisk and Toshiba in 2000. If a manufacturer is going to use SD technology in product, they have to license the right to use that technology from the SD Association. Most, if not all, of the major camera manufacturers are members of the SD Association and license the patents and other intellectual property necessary for developing SD-compatible cameras and memory cards.
There are a number of different specifications that the SD Association has developed over the past decade, including SD, miniSD, microSD, SDHC, miniSDHC, microSDHC and SDXC, among others. Each specification has its own limitations or capabilities. For instance, the original SD specification offered storage only up to 2GB. When SDHC came along, it took the capacity up to 32GB. The latest specification, SDXC, offers storage capacities up to 2TB. [Read more...]