SnapperTalk

February 4th, 2009

Sonnet Dual-CF Expresscard adapter

Posted by Ben in Gear

sonnet-dual-cf-adapter

Copying photos from digital camera cards never really seems to get faster. The card speeds increase, but seemingly at the same rate as the size of the image files. I recently came across an interesting product that may suit some people though.

The Sonnet Pro Dual CompactFlash Adapter ExpressCard/34 enables you to upload your pictures from two compact flash cards simultaneously via a high-speed expresscard connection. Looks like it could be a pretty good solution for those without Firewire, but in the Barefeats test of it the Sandisk Extreme Firewire800 reader had a marginally faster read speed.

Personally I don’t like these sort of expresscard readers that stick out from the laptop – I feel they’re too likely to get broken when out-and-about.

Delkin Cardbus readers

My current favourite reader is the Delkin Cardbus UDMA CF adapter (seen on the right) which you can leave permanently in the laptop slot and still fits flush with a card inserted. It’s very fast, and the convenience of never having to remove it, worrying about it snagging on something, or risk forgetting it.. makes it a winner. The only problem is the hot-swapping on Windows can occasionally be a bit buggy, but not too bad.

My previous brief review of the Delkin is here

5 Responses to ' Sonnet Dual-CF Expresscard adapter '

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  1. Edmond Terakopian said:

    Interesting…..whilst the Sonnet’s slower than the Sandkisk FW800 reader (which I’m already using), surely if transferring two cards simultaneously, the Sonnet should be much faster?? What do you think??

    February 4th, 2009 at 19:54 UTC

  2. Ben said:

    The Sonnet is a bit slower at reading, though a fair bit faster at writing – but then who writes TO a card on a regular basis? You raise a very interesting point though… Barefeats only tested the device with one card (a Lexar Professional UDMA 300X CF Card).

    The 2.5Gbps PCIe interface has way more bandwidth than two CF cards could possibly produce, so in theory I think you are right.

    That said, bottlenecks in bandwidth can be very complicated, and while the interface itself can clearly support faster speeds, it just depends on whether there is some sort of artificial bottleneck in either the device or more possibly the device driver.

    As most photographers shoot with two bodies, there are often two cards to download at the end of an assignment, and so if your argument is correct, it could be a pretty fast solution.

    I don’t have one myself, so I can’t verify this unfortunately.

    If you haven’t seen it, The Sports Photo Guy website has some extensive reviews of card readers:

    http://sportsphotoguy.com/all-about-cf/

    February 4th, 2009 at 20:57 UTC

  3. Edmond Terakopian said:

    There in lies the question! Is it practically possible! I’ll try and get hold of one and see. I’ll keep you posted.
    Thanks for the link.

    February 4th, 2009 at 21:10 UTC

  4. Ben said:

    I suspect you are probably right and the bottleneck is the card itself… which would mean 2 cards = 2 x speed.
    2.5Gbps is near full eSATA speed, and when you add multiple SATA drives to an eSATA connection you do get full speed for each drive.
    My laptop has both Expresscard & Cardbus slots, but I chose to go with Cardbus simply because the convenience of keeping the adapter permanently in the machine while carrying it around, even with a card inserted, outweighs the extra speed I might get from Expresscard.
    The Delkin Cardbus UDMA adapter is pretty damn fast anyway. But if you do get one of the Sonnet adapters I’d love to hear the results…..

    February 4th, 2009 at 21:28 UTC

  5. Edmond Terakopian said:

    I used to use the Cardbus a couple of years ago before I switched over to Apple. I couldn’t believe the speed the first time I used it!! The Sandisk FW800′s pretty fast too. I’ll keep you posted on the Sonnet.

    February 4th, 2009 at 22:07 UTC

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