Hi : ) !!! - Sandisk Ultra vs. Sandisk Extreme!

Discussion in 'Digital Video' started by igmolinav, Dec 10, 2015.

  1. igmolinav macrumors 65816

    Joined:
    Aug 15, 2005
    #1
    Hi,

    The Sony A7ii video characteristics are as follows:

    Video Format XAVC S
    1920 x 1080p / 60 fps (50 Mbps)
    1920 x 1080p / 30 fps (50 Mbps)
    1920 x 1080p / 24 fps (50 Mbps)
    AVCHD
    1920 x 1080p / 60 fps (28 Mbps)
    1920 x 1080i / 60 fps (24 Mbps)
    1920 x 1080i / 60 fps (17 Mbps)
    AVCHD
    1920 x 1080p / 24 fps (24 Mbps)
    1920 x 1080p / 24 fps (17 Mbps)
    MP4
    1440 x 1080 / 30 fps (12 Mbps)
    640 x 480 / 30 fps (3 Mbps)


    Are the quantities in the parentheses, given in 'Mbps', the speeds that the camera writes into the SD card??

    Is a Sandisk Ultra SD Card fast enough for this camera? The write speed of this card is a Minimum of 10 Mbps, as the specs here say:
    http://www.bhphotovideo.com/c/produ...unc_064g_gn6in_ultra_sd_64gb_card_80mb_s.html

    Or does one need any of the two types of Sandisk Extreme SD cards shown here:

    1. http://www.bhphotovideo.com/c/produ...DXPA_064G_A75_Extreme_Pro_64GB_SDHC_SDXC.html

    2. http://www.bhphotovideo.com/c/produ..._sdsdxne_064g_gnci2_extreme_64gb_sdxc_u3.html


    What is the big difference between the Sandisk Extreme SD Cards and the Sandisk Ultra SD Cards??

    Thank you, kind regards,

    igmolinav : ) !!!
     
  2. Just_My_Opinion, Dec 10, 2015
    Last edited: Dec 10, 2015

    Just_My_Opinion macrumors member

    Joined:
    Dec 1, 2015
    #2
    My recommendation is to buy the fastest card possible. Memory cards are confusing as many manufactures list burst or peak read/write speeds. UHS-1 cards with a U3 classification should be at the top of your list. This will deliver about 30 MB/s transfer, great for RAW photos and video. For 50 Mbps video approx. 6 megabytes per second sustain speed is needed.
    From your list this is my recommendation: http://www.bhphotovideo.com/c/produ..._sdsdxne_064g_gnci2_extreme_64gb_sdxc_u3.html
    I use a similar 32 Gb card.
    The Ultra Extreme Pro card would only benefit you if the goal is burst photography or quick upload to your computer.

    As a side note, remember both the card reader and camera need to support a common standard to benefit from the speed.
     
  3. cruisin macrumors 6502a

    cruisin

    Joined:
    Apr 1, 2014
    Location:
    Canada
    #3
    Extreme
    • Class 10 / UHS-I / U3
    • Max. Read Speed: 90 MB/s
    • Max. Write Speed: 40 MB/s
    vs Ultra
    • Class 10 / UHS-I
    • Max. Read Speed: 80 MB/s
    • Min. Write Speed: 10 MB/s
    Extreme seems to be a touch faster. The U3-1 feature (https://www.sdcard.org/consumers/speed/speed_class/) just means that they certify 10 MB/s as the min writing speed.

    Make sure you have the correct units for speed. Mbps is 1/8 of MBps (Megabit vs Megabyte). 50 Mbps is 6.25 MBps and both cards will work.
     
  4. Just_My_Opinion macrumors member

    Joined:
    Dec 1, 2015
    #4
    Here's the sustained performance of an Extreme Card using built card USB 3 reader on the Mac.
     

    Attached Files:

  5. Ries macrumors 68000

    Joined:
    Apr 21, 2007
    #5
  6. Just_My_Opinion macrumors member

    Joined:
    Dec 1, 2015
    #6
  7. igmolinav thread starter macrumors 65816

    Joined:
    Aug 15, 2005
    #7
    Hi,

    Thank you very much for your comments : ) !!!

    Very kind regards,

    igmolinv : ) !!!
     
  8. LiveM macrumors 6502a

    LiveM

    Joined:
    Oct 30, 2015
    #8
    I made the mistake if buying a very expensive Sandisk card that was a type above the recommended class for the camera. This results in issues and as a result it stays in a drawer while I happily use a cheaper, slower card with twice the capacity for a fraction ofmthe price. But one day, that old card will be useful!
     
  9. jerwin macrumors 65816

    Joined:
    Jun 13, 2015
    #9
    I'm not sure what's wrong with my cards, if anything, but here's my results with two Sandisk Ultra cards. 2014 imac 5k card reader.

    The slower one is a Sandisk Ultra 16 GB 30 MB/s.
    The faster one is a Sandisk Ultra 32 GB 80 MB/s.

    Bothe are class 10 cards. They don't seem to be UHS cards.
    Since write speed is the critical factor, not read speed, perhaps you should go for the Ultra Extreme--or better yet, consult published benchmarks. Screen Shot 14.png Screen Shot 15.png

    My hobby is still photography with a D7000, so the faster one of the two isn't limiting.
     
  10. LiveM macrumors 6502a

    LiveM

    Joined:
    Oct 30, 2015
    #10
    D7000 is the camera with which I had the card issues. Great features but hated the skintones so much.
     
  11. jerwin macrumors 65816

    Joined:
    Jun 13, 2015
    #11
    Skintones? Did developing from raw help?
     
  12. LiveM macrumors 6502a

    LiveM

    Joined:
    Oct 30, 2015
    #12
    No, nothing worked. I even tried lens filters. I had to do a lot more B&W work than usual because of this. I loved the tones on my D70s and D200 and couldn't be happier now I have all-Samsung primary gear. I felt I was losing important memories.
     
  13. igmolinav thread starter macrumors 65816

    Joined:
    Aug 15, 2005
    #13
    Hi,

    Thank you for your messages : ) !!!

    Kind regards,

    igmolinav
     
  14. hchung macrumors 6502a

    Joined:
    Oct 2, 2008
    #14
    For the bottom card, use a camera to do the format and then try again.
    If a card's gotten too many file writes and rewrites over time, it appear slower because the file system might actually cause extra writes for the metadata.

    Also, if you run a benchmark utility on a card, for best performance always format the card using a camera before putting it back into service since benchmark utilities will apply that sort of bad writing pattern for their random IO tests.

     

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