5 new 64gb SD cards: Incoming inspection?

Discussion in 'Digital Photography' started by MareLuce, Aug 3, 2019.

  1. MareLuce macrumors 6502a

    MareLuce

    Joined:
    Sep 26, 2010
    #1
    I just purchased 10 new 64gb Sandisk SD cards from Adorama for an upcoming cruise and DIY land tour in Alaska.

    What should I do re: incoming inspection on these cards?

    - Format them in my cameras?
    (a DJI Osmo Action, a Panasonic Lumix ZS200, a FujiFilm waterproof XP140)

    - Run speed tests to verify they are the legit fast kind to support 4k video?
    (I bought them from BH Photo after reading on Wirecutter and hearing on podcasts that many of the Sandisk cards on Amazon are professional fakes - swapped with lower speed memory cards but still bearing the Extreme packaging.)

    What would you do?
     
  2. mollyc macrumors 68000

    Joined:
    Aug 18, 2016
  3. MareLuce thread starter macrumors 6502a

    MareLuce

    Joined:
    Sep 26, 2010
    #3
    Is there such a thing as "dead sectors" on SD cards, and does a camera format take care of that?
     
  4. mofunk macrumors 68020

    mofunk

    Joined:
    Aug 26, 2009
    Location:
    Americas
    #4
    Always try to purchase your camera gear from an authorized dealer.

    10 64GB wow
     
  5. MareLuce thread starter macrumors 6502a

    MareLuce

    Joined:
    Sep 26, 2010
    #5
    Yep.

    Apparently Alaska is like Disney World for adults. I normally prefer exploring cities on vacations, much more than nature. Then, on a flight back from a work trip to Hong Kong, I met a Chinese woman traveling with her church group. They were all going to Alaska. She couldn't believe I've never been to Alaska yet I was an American :).

    She raved about it and we shared a Pomelo, the most delicious citrus fruit I discovered in Hong Kong. After returning I started surfing TripAdvisor activities and was hooked.

    Someone wrote, "I took more pictures in Alaska than on the past 5 vacations combined." He bought 9 64gb cards and used 7.

    I hope to use the DJI Action mounted somewhere with a GorillaPod for continuous filming while on small boat tours of the Alaska coastline and glaciers like this one by Major Marine. https://majormarine.com/all-cruises/
     
  6. killawat macrumors 65816

    Joined:
    Sep 11, 2014
    #6
    I use the SD Association SD Card Formatter app to format all my cards and overwrite occasionally even compared to using something like disk utility. Do a full overwrite and make sure the output should tell you if anything is wrong or you can inspect manually to see if the size is way off.

    https://www.sdcard.org/downloads/formatter/
     
  7. MareLuce thread starter macrumors 6502a

    MareLuce

    Joined:
    Sep 26, 2010
    #7
    Thank you!

    Do you have a preferred utility for testing speed?
     
  8. killawat macrumors 65816

    Joined:
    Sep 11, 2014
    #8
    Blackmagic Disk Speed Test
    https://apps.apple.com/us/app/blackmagic-disk-speed-test/id425264550?mt=12
    Of course YMMV as you'll need a decent card reader on your machine to test at the card limits.

    I don't think you'll have any issues with the SanDisk Extremes but I use Extreme Pro with no problems.
     
  9. MareLuce thread starter macrumors 6502a

    MareLuce

    Joined:
    Sep 26, 2010
    #9
    Thank you!


    The SD cards I bought for my big cameras were Extreme Pro's.

    I couldn't find microSD Sandisk Extreme Pro cards for the DJI Action camera when looking at Adorama or BH Photo. On Adorama it said "discontinued". So I have the 64gb Extreme Plus for the DJI Action / Go Pro.

    I wanted to buy bigger, but I read of GoPros having overheating problems with 256 gb cards. So even though I went with a different brand, I went smaller.
     
  10. steveash macrumors 6502

    steveash

    Joined:
    Aug 7, 2008
    Location:
    UK
    #10
    I have had one card failure in 20 years and this was from an Amazon reseller. Since then I have always gone for Sandisk authorised dealers and never had a problem. Running speed tests would make sense but if a card is going to fail there may not be any warning signs.
     

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9 August 3, 2019