SD card speed, how fast can my camera write?

Discussion in 'Digital Cameras' started by Justin C, Jan 13, 2007.

  1. Justin C

    Justin C Guest

    My camera is incredibly slow at writing RAW files - 6 to 7 seconds at my
    count. Generally, for the sort of shots I take this isn't too much of a
    problem, but there are times when I may want/need to get shots more
    quickly - an unexpected development in the scene I don't want to miss,
    for example.

    I'm currently using SanDisk Ultra II cards. How much faster are the
    fastest cards? Will all cameras write as fast as the card can handle or
    are there cameras that can't keep up with current cards capability?

    If I can shave a couple of seconds off the save time or even 50% I'd be
    much happier.

    I look forward to your comments.
     
    Justin C, Jan 13, 2007
    #1
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  2. $I'm currently using SanDisk Ultra II cards. How much faster are the
    $fastest cards? Will all cameras write as fast as the card can handle or
    $are there cameras that can't keep up with current cards capability?

    You're on the right track with your last question. It's not just
    the card; it's the combination of card and camera. You didn't mention
    what camera you have so nobody can tell you whether your specific
    camera will benefit from a faster card and, if so, by how much.

    According to Sandisk's Web site, the Extreme III SD cards are
    about twice as fast as the Ultra II SD cards. So there's a definite
    speed improvement possible -- if your camera can keep up, which is a
    big if.

    If your camera is listed in Rob Galbraith's database (go to
    http://www.robgalbraith.com/ and click on the CF/SD link near the
    top left), you'll probably find useful information there as to
    whether a faster card will help. Looking at the camera I have
    (which uses CF, not SD, so it's obviously not the same camera you
    have), Ultra II, Extreme III, and Extreme IV are all within a
    few percent of each other, so even though Sandisk claims each
    generation is about twice the speed of the previous generation,
    my camera simply can't take advantage of the extra speed.[/QUOTE]
     
    Stephen M. Dunn, Jan 13, 2007
    #2
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  3. Justin C

    Justin C Guest

    Mine's not there. It's a Leica Digilux 2. I've just Googled some more
    and found someone on a Leica forum posting on the same subject. One
    reply he received suggests that the Leica was designed for write speeds
    of not more than 66x... which is the speed of the Ultra II.

    Looks like I'll not be improving the write speed then.

    Thanks for the reply.
     
    Justin C, Jan 14, 2007
    #3
  4. Justin C

    ASAAR Guest

    Dpreview tested the Digilux 2 using the supplied 64MB Leica SD
    card and a Sandisk Ultra II. Leica's card was abysmally slow (7
    seconds to write a JPG file, 18 seconds for RAW). A 512MB Ultra II
    was 3 times faster (1,600KB/sec vs. 570KB/sec), which indicates that
    the Digilux 2 can't take full advantage of the Ultra II's speed.
    IIRC, a 1x card has a speed of 150KB/sec, so Leica's card would be a
    bit slower than 4x, and using the Ultra II card, the write speed was
    found to be between 10x and 11x. While the performance would be
    just as good using a much slower card, the Ultra II's price is
    reasonable, and probably allows for much faster transfer of files to
    the computer via the Digilux's USB 2.0 High Speed port. Same thing
    if you use a High Speed card reader instead.
     
    ASAAR, Jan 14, 2007
    #4
  5. Justin C

    Justin C Guest

    It looks like I'm going to have to be more careful when I press that
    shutter. Be certain it is the "decisive moment".

    Thanks for your comments; the same/similar has been hinted at by others.
    I'm disappointed but it's not enough to persuade me I need to replace
    the camera.
     
    Justin C, Jan 14, 2007
    #5
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