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 p.6 #2 · p.6 #2 · Olympus E-M1 MKIII Hands On, Tips and Images | |
kmcsmart wrote:
I am just about to buy a E-M1 MarkIII for BIF photography but I am not sure what speed of UHS-II card to buy. I don't want to limit my burst speed by getting a slow card but I also don't want to spend a mint on a card that is overkill for the camera. I know that one of the SD card slots is UHS-II and the other is UHS-I. I have read that you can backup to the slower card when your not shooting and that seems like a good option for me.
So what speed of UHS-II card do you use?
Thanks
Karen...Show more →
While having the fastest 250-300 MB/s read and write speed cards might be nice, they are expensive and really not needed. For both my EMI MkIII and Sony A7RIV, where I shoot raw + jpeg written to separate cards, I use the Sony Tough series M cards, which are 275 MB/s read and 150 MB/s write speed. The write speed is the important one as that is the speed the card can accept sensor data. Only the best UHS-1 cards top out around 90 MB/s write, most are much less, so UHS-II speeds can be significantly faster. But the camera also has to have fast transfer speed internally and somewhere last year I read a review that the EMI MkIII internal speed was in the 145+/- MB/s range, so any card that is faster really won't improve transfer speeds. Same for my Sony, it is in the same range internally. For this reason I bought the M series and not the double the write speed G series @299 MB/s, it seems to be money wasted.
The Tough Series is Sony best card, being waterproof and dustproof, and even though only slot 1 of the EMI MKIII is UHS-II speed I bought UHS-II cards for both slots for convenience and instant backup if needed, knowing the 2nd card can work at fast speeds in slot 1. Never had any issues with buffer slowdown, but then I never shoot at 10FPS for 5 seconds or more. Other than the speed rating the G and M series Tough cards are identical and carry the same 5 year warranty. The Tough M series cards are about 1/3 the cost of the Tough G series cards, B&H and others has the Tough 128GB M cards on sale for $60 where the G series 128GB card is $190!! The Tough 64GB M card is $40 vs $100 for the G series. It's $100 for a pair of M cards vs. $290 for a pair of G cards, yeah, that's a savings 
I put the 128GB card in slot 1 for raw/rare movies and the 64GB card in slot 2 for jpeg. I can shoot about 2,500 raw photos with this setup and have an instant backup large size jpeg. Writing raw files to the 2nd card slot, being only UHS-1, is what will slow down the buffer, so try to avoid that.
For Video, the M series has a V60 rating where the G have a V90 speed, but both cameras work fine with V60 cards according their specs.
p.s. Sony makes a non-Tough M card that is the same speed, a bit cheaper, but not rated to be waterproof or dustproof. Since the EM1 MkIII is rated for these conditions, I feel the SD cards should be rated too, so the 5 to 10% savings is not worth it to me.
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