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02-11-2015, 10:25 AM   #1
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UHS-1 in K-S2: What does it really mean?

I've fallen behind on the memory card initialisms, but how does the UHS-1 support in the new K-S2 affect its use? Could it dump the buffer faster on supported SD cards? I would love it if that was the case.

02-11-2015, 11:02 AM   #2
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UHS-I has a bus speed of up to 50/MB/s or 104MB/s. Normal and High Speed cards have a bus speed up to 12.5MB/s and 25MB/s, respectfully. Normal and high-speed cards can also be used with UHS-I host devices, but the high performance enabled by a UHS-I host device can only be achieved with a UHS-I memory card.

UHS-II has a bus speed max of 156MB/s or 312MB/s.

UHS-I and II are only found on SDHC and SDXC cards but only if they have the Roman Numeral I or II bus marks. You can use UHS cards in non-UHS rated hosts but you will only get the card Class rated speeds.
02-12-2015, 07:29 AM   #3
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QuoteOriginally posted by Not a Number Quote
UHS-I has a bus speed of up to 50/MB/s or 104MB/s. Normal and High Speed cards have a bus speed up to 12.5MB/s and 25MB/s, respectfully. Normal and high-speed cards can also be used with UHS-I host devices, but the high performance enabled by a UHS-I host device can only be achieved with a UHS-I memory card.

UHS-II has a bus speed max of 156MB/s or 312MB/s.

UHS-I and II are only found on SDHC and SDXC cards but only if they have the Roman Numeral I or II bus marks. You can use UHS cards in non-UHS rated hosts but you will only get the card Class rated speeds.
Sorry, my fault for not being clear but that's not what I was asking about.

I've read the specs, but specs and real-life experience isn't exactly the same thing. What would be the practical effect be on shooting with the K-S2? Maybe people with the K-3 experience can shed some light since I think it also has UHS-I support. Thanks.
02-12-2015, 08:55 AM   #4
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The practical effect is you'd be able to maintain high burst and frame rates on stills and video. UHS-I has faster write rates (in theory) so the images or video stream can be written to the card and not lag as much from fewer buffer overruns.

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