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  1. #1
    Join Date
    Jul 2004

    SDHC Class 4 or 6?

    I have a Panasonic FZ35 and looking to pick up a new memory card and the manual states that a class 6 is the card to go with. I've seen decent/comparable prices on the Sandisk Ultra 16gb class 4's and the Transcend 16gb Class 6's. My questions are, Is there a big difference between the two classes (4 vice 6) and how reputable is Transcend (i've honestly never heard of them)? Is Sandisk a better/worse product?

    Will primarily be using the camera for casual photos and some HD video.


  2. #2
    Join Date
    Dec 2006
    So Calif
    There is enough difference between the classes to use Class 6, but faster than Class 6 probably will not be of any benefit.

    Either brand is fine.
    Pentax K20D/K5/15/21/40/70/10-17/12-24, Sigma 17-70 2.8-4.5/150-500, Tamron 90 Macro/70-200 2.8, Canon SX20 IS/Elph 500HS
    (formerly Pentax 50 1.4/50-200/55-300/K100D, Sigma 18-50 2.8/70-300 APO, Tamron 28-75, Viv 800, Tele-Tokina 800, Canon S3 IS, Samsung L210)

  3. #3
    Join Date
    Feb 2010
    East Coast
    The Speed Class Rating is the official unit of speed measurement for SD Cards, defined by the SD Association. It is equal to 8 Mbit/s, and it measures the minimum write speeds based on "the best fragmented state where no memory unit is occupied"

    The following are the ratings of some currently available cards:

    * Class 2: 16 Mbit/s (2 MB/s)
    * Class 4: 32 Mbit/s (4 MB/s)
    * Class 6: 48 Mbit/s (6 MB/s)
    * Class 10: 80 Mbit/s (10 MB/s)
    I will use Class 10 in my Video camera I think my Nikon Cool Pix s4000 has a class 6 in it.

    Check your manual and go with what they suggest

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