Is there a difference between a SDHC Class10 card and a SDHC UHS-1 class10 card?
A different question with the same premise as in another thread...
I need to get a Class10 card for my D7000. That is because I shoot a lot of sports and my class 6 cards start choking after 15 or so high speed shots at full size jpg. I wouldn't even dream of trying it in raw.
Amazon shows the Sandisk Extreme 8gig SDHC Class10 for $43. Then I happened to be at Best Buy last night and saw that they had a Sandisk Extreme 8gig SDHC HD Video Class10 that is also UHS-1.
They both say 30mb/s speed.
My understanding is that the UHS-1 rating means that even though it is a Class 10, it should be able to sustain faster write speed.
So is there a speed difference between those two cards? Does the UHS-1 rating on one of them mean anything if they both say 30mb/second? Will it make a difference is high speed shooting for sports?
Thanks very much.
this one is rated @45 is even less.
SanDisk Extreme Pro 8GB Secure Digital High-Capacity (SDHC) UHS-1
I bought mine at b&h for $36 for an 8 gb, one for each slot.
The biggest advantage for the D7k is how fast the buffer clears, although you may get a few more shots even with settings maxed out.
I purchased two of the 8G UHS-1 cards from Adorama at $36.00 ea.
These cards are the fastest available at the current time. The D7K buffer will clear faster and allow a few more shots before slowing down. The camera also does not slow as much as with class 10 cards.
Well worth the money.
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The SD Class X spec only specifies the minimum read/write speed of the card, not the actual speeds. That's why you have some Lexar Class 10 cards doing 10.4MB/s, some Kingston class 10 cards doing 20MB/s, and Sandisks doing 30+MB/s. The rating system only goes up to Class 10, which creates the aforementioned ambiguity as to just how fast the card is.
"In technology I'm placing all my trust"
Thanks for the info everyone!
Great tip, Sandy. I hadn't even noticed that. Just order one of the Extreme Pro from Amazon. Thank you.
The memory buffer will clear out faster with UHS-1 speed class cards.
I have noticed no difference in test I ran with Class 6 or Class 10 cards.
UHS-1 cards work to clear out the buffer faster than class 6/10 cards.
But, more expensive, faster UHS-1 cards do not work any better than each other...
See test meathods and results at: http://glamourphotography.co/gear/nikon-d7000-memory-speed-tests-sdhc-memory-cards-including-sandisk-extreme-pro-uhs-speed-class-1-45mbsec-and-several-popular-class-10-sdhc-cards/
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