Many ask and want to know!, What's is the best Micro SD Card to use?
I personally use the Sandisk Extreme cards. They have been very reliable!
What is your experience with the SD Cards that your currently using?
There are other Posts covering this [SD card capacity] but it is well worth spending the extra and buying the SD cards capable of the highest sustained 'write' speed. These are designated with a small symbol that's a 'U' with a number 3 inside it. Using these cards you can be sure that you can record 4K video formats without any problems.
Rather than going for the large 128GB size, there is popular opinion to have several 64GB cards (one for each battery), and change your SD cards with your battery.
Not really unfortunately - The U1 logo ['U' with a number 1 inside it] on the card itself is the clue. SD Cards with the ability to support the sustained write speed needed for HD video, are identified with a U3 logo. If you use the U1 card in your photo, it will record, but your video will have a 'stutter' and won't be smooth. The 'Fast Transfer Speeds' on the card, refer to the 'read' or 'download' speed of getting data from the card - what's important is getting the data actually 'written' to the card in the first place!
Look for the U3 like on this card ...
Just looking at more info about SD cards ... There is another rating on the cards that is significant if you are interested in the 'read' speed i.e. how fast you can get the data off the SD card onto your PC. In addition to the U3 symbol, the cards will also be marked with an XC and a roman numeral I, II, or III after it ... While the 'UHS Speed Class' U3 symbol denotes the minimum sustained write speed (with U3 being the fastest), the 'UHS Bus Speed' XC rating denotes the theoretical max. read/write speeds - with III being fastest.
Based on this, an XC II card would download to your PC faster than an XC I rated card.
Thank you all for the very informative advice. Now I know a lot more about sd cards and what to look for. I think I will attempt to buy something online because in my country the U3 cards are insanely expensive.
So don't be so fussy about the data transfer speed between the card and your PC ... XC I is OK - Just go make a coffee while you download your flight vid's to your PC.
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