The new SDXC specification for faster, higher-capacity flash cards emerged in January, and Toshiba now promises the cards themselves will begin arriving about a year afterward.
Toshiba plans to sell its first SDXC cards in the spring of 2010, with a starting capacity of 64GB.
(Credit: Toshiba)Toshiba said Monday it expects to be the first to bring SDXC cards to market, with testing samples of a 64GB version shipping in November and the real thing shipping in the spring of 2010. Those dates will be key moments in what doubtless will be a gradual transition away from the prevailing SDHC standard.
SDXC backers promise higher capacities and data transfer speeds for SDXC, which is important for devices such as video cameras that can produce lots of data at a sustained rate. But initially, a new generation of Toshiba's SDHC line will match the SDXC's maximum 60MBps data-reading speed, and maximum 35MBps data-writing speed, the company announced, using a new high-speed interface called UHS104.
The fast new SDHC cards, though, will only be available in 16GB and 32GB models. SDHC tops out at 32GB, but the SDXC specification extends to 2TB. In addition, through use of Microsoft's exFAT files system on SDXC cards, individual files can exceed 4GB, which is important for longer videos.
Capacity is undeniably important when it comes to carrying your video camera around for extended periods of time. But do you really need all that transfer speed? Leaving aside the confusing muddle of minimum vs. maximum transfer speeds and certification, even high-definition video only pushes the envelope so hard.
For example, Canon's high-end 5D Mark II SLR, which can record 1080p video at 30 frames per second, requires only a relatively modest 8MBps write speed for its CompactFlash card; high-end CompactFlash today can handle 45MBps.
Of course, there's also the matter of transferring photos and videos to computers, a tedious task at best that benefits from maximum speed. But that's often constrained, though, by the card reader and its interface to the computer.
No doubt those pipes will widen as time marches on, with SDXC and higher-speed SDHC helping to nudge things along on one end and higher-speed interfaces such as USB 3.0 and Firewire S1600 and S3200 on the other end. The SDXC specification calls for 104MBps speeds in 2009 and eventual speeds of 300MBps.
One interesting issue is whether SDXC will displace CompactFlash in high-end SLRs. SDHC is used in lower-end SLRs now, displacing CompactFlash, and is making its way into higher-end models including Nikon's D300s and Canon's 1D Mark III alongside CompactFlash.
SD and its successors have relegated rivals such as xD card from FujiFilm and Olympus and Memory Stick from Sony to product niches, new MacBook Pro laptops from Apple have built-in SD card slots, and Canon USA technical adviser Chuck Westfall had encouraging words for SDXC.
So SD has plenty of momentum, and the SDXC generation certainly has the potential to continue to outpace CompactFlash in price while also becoming competitive in capacity and data transfer speeds.
The diminutive size of SD compared to CompactFlash is an asset when trying to squeeze a slot into a computer or camera. But some serious and professional photographers have griped that the small cards are hard to handle and easy to lose.
Panasonic's 32GB SDHC card, with a 20MB-per-second transfer rate, will cost about $700.
(Credit: Panasonic)Panasonic announced a new SDHC (Secure Digital High Capacity) flash card on Tuesday that offers both high speed and lots of space for those willing to pay.
The 32-gigabyte card, called the RP-SDV32GU1K, is due to ship in April for about $700. It's a high-speed "class 6" card that can transfer data at speeds of 20MB per second--the world's first at the 32GB capacity, Panasonic asserts.
SD is the dominant format for flash memory, and with the newer SDHC technology that extends capacity beyond 2GB, it's begun spreading into space-gobbling videocameras. SanDisk, a top flash card brand, announced a 32GB SDHC card costing $350 in January, but it transfers data a notch slower, at 15MB per second.
One major flash card alternative to SD, CompactFlash, can transfer data at a maximum of 45MB per second. However, top transfer speeds are often more useful when copying files from a flash card, since cameras and videocameras often can't write data at those top speeds.
Canon's EOS Rebel XSi goes on sale in April.
(Credit: Canon)Canon faced some modest compatibility risks when it chose to design its new EOS Rebel XSi camera with SD flash-memory cards rather than the CompactFlash cards it's used for all its SLR cameras until this point, but I think the move is smart overall.
It's a drag for consumers that there's such a profusion of flash card formats. Customers often must pay extra when moving from one camera maker to another just to replace flash cards. And indeed, owners of Canon's existing Rebel, Rebel XT, or XTi cameras will find their CompactFlash cards useless if they upgraded to an XSi.
But the reality is that Rebel XSi (also called the 450D and Kiss X2 in various parts of the world) customers are more likely to be upgrading from a compact camera, a market where SD dominates. And from a technical perspective, SD performs fine, takes up less critical room in the camera, and in the newer SDHC incarnation can match CompactFlash's 32GB capacity.
CompactFlash memory has been a mainstay in the SLR (single-lens reflex) camera market, but SD has gained a foothold. Nikon's entry-level SLRs use SD cards, as do all from Pentax, Panasonic, and Samsung. And Canon's top-end 1Ds Mark III accepts both SD and CompactFlash.
Now if we could just get rid of xD Picture Card from Olympus and Fujifilm and Memory Stick from Sony, we'd all be better off. Fujifilm wisely has started selling compact cameras with a dual-use adapter that can accept SD as well as xD, and I'm hoping that's a harbinger of things to come.
Sigma's DP1 camera, shown here in prototype form in March 2007
(Credit: Stephen Shankland/CNET Networks)Sigma has delayed the release of its DP1 to revamp the high-end compact camera, but one thing that won't change is the Foveon sensor at its heart.
When Sigma said last week that it was changing the DP1's image processing "pipeline" to meet quality and performance goals and that the Japanese company "had to change some of the specifications that we had announced," I naturally wondered whether the changes might have evicted the image sensor.
Not so, according to Richard Turner, vice president of marketing and applications at the San Jose, Calif.-based start-up.
"Foveon is not able to comment specifically on Sigma's product plans or status. However, what we can say is that Foveon and Sigma continue to work together very closely, and Foveon's sensor will be used in the DP1 camera," Farmer said. "Foveon and Sigma enjoy a very good working relationship and we fully expect this to continue into the future."
Most cameras employ image sensors whose pixels gather either red, green, or blue light, with a checkerboard-pattern filter determining which color strikes each pixel. Later processing interpolates data so each pixel gets a value of red, green, and blue, a process called de-mosaicing.
Foveon sensors, though, record all three colors for each pixel. That can get around some articacts that de-mosaicing can produce in areas of fine detail. But Foveon's sensors haven't caught on widely.
Most compact cameras employ a small image sensor, but the DP1 is designed around a Foveon chip large enough for use in SLR cameras. Indeed, the chip is used in Sigma's SD14 SLR.
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