How important are fast SD cards?

Discussion in 'Fuji X Series News and Rumors' started by depscribe, Feb 24, 2013.

  1. depscribe

    depscribe FujiXspot Regular

    82
    Feb 17, 2013
    • Like Like x 1
  2. Ray Sachs

    Ray Sachs FujiXspot Veteran

    485
    Feb 1, 2013
    Near Philadephila
    I've actually found fast SD cards to be more beneficial with Fuji cams than any other. I'll never forget the difference in the X100 when I switched from a standard card to a fast one - it actually made it a very useable camera where it nearly hadn't been shooting raw with a slower card. I haven't tried the X-Pro with anything BUT fast cards, so I don't know if that's still the case or not. With my other cams, the speed of the card never seemed to make much practical difference. With the GH2 I had for a while and the OMD I have now, I can find a difference if I'm shooting with a fast burst mode - the write times are a lot better with the faster cards. But I shoot like that almost never, so I'm fine with just about any cards in my other cameras.

    -Ray
     
  3. depscribe

    depscribe FujiXspot Regular

    82
    Feb 17, 2013
    What surprised me in the story -- and I'd need to confirm it elsewhere -- is that video requires less speed in storage than stills does. Given the relative quality of any video frame I can almost believe it, but there sure are a lot of them and, nifty compression algorithms notwithstanding, it seems counterintuitive. I don't shoot videos with my Fujis, but we do use a couple of LX-5s to make instructional DVDs that have been pretty successful. (There, the problem has never been card speed but the absurd limit of about 8 minutes per scene. Makes my editing life problematical, synchronizing two video streams and an audio stream, without them beginning or ending at the same time.)

    Then again, my first digital camera was a Sony which wrote directly to floppy, with no discernable buffer. That was slow! (And a single floppy would hold only four highest-quality images, so I had to carry a bag of floppies when I shot an event -- felt only a slight improvement over a 4x5 press camera, with two pictures per film holder. And 4x5 pictures are a whole lot better!)
     
  4. ean10775

    ean10775 FujiXspot Top Veteran

    885
    Feb 13, 2013
    Cleveland, OH
    Eric
    What are you guys considering a 'fast' sd card since 'class 10' isn't really all that telling...30 mbps write?, 45mbps? 95mbps?
     
  5. Biro

    Biro Super Moderator Subscribing Member

    495
    Feb 1, 2013
    Jersey Shore
    Steve
    Good question. I no longer purchase any card slower than 95 mbps. I already have slower cards for my older cameras that don't take advantage of the UHS-1 standard but even they are at least 30 mbps/Class 10.
     
  6. Ray Sachs

    Ray Sachs FujiXspot Veteran

    485
    Feb 1, 2013
    Near Philadephila
    I found I needed to go to 45mbs for the X100 to work well. 95mbs didn't seem to improve on the 45mbs.

    -Ray
     
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  7. kevwilfoto

    kevwilfoto FujiXspot Regular

    61
    Feb 10, 2013
    Frederick, CO
    My shooting style doesn't tax my camera's write buffer, but I still use fast card for the read speed when I am downloading the files to my computer.
     
  8. ci-lee

    ci-lee FujiXspot Regular

    29
    Feb 12, 2013
    When I made the switch to Fuji, I found that class 10, 45mb made a huge difference over my older class 6 cards. And since I use Apple, specifically my iPad more than Mac, I have gotten in the habit of formatting the card in the camera after uploading and clearing the card out. A few times I didn't do this (and if I recall may have even changed the file structure) which caused significant lag in performance...
     
  9. Vali

    Vali FujiXspot Rookie

    23
    Mar 1, 2013
    I think it is because how mpeg algorithms work: Every now and then you store a full quality frame (keyframe) and between them every frame only stores the differences with the precedent frame (i-frames) wich needs way less information. Those keyframes are roughly like Jpegs, so even them are less "heavy" than a RAW.