I don't think it makes any difference. Comparing four 32GB cards (new & old
Extreme + Ultra + Extreme Pro) they all seem to have a transfer speed greater
than the K5's write speed.
SanDisk Extreme 32GB SDHC UHS-I Card [Old Version] $18.95 USD
90 MB/S
https://www.amazon.com/SanDisk-Extreme-UHS-I-SDSDXNE-032G-GNCIN-Version/dp/B013CP3KZ6
https://tinyurl.com/y9lmtuxk
SanDisk Extreme 32GB 90 Mb/s SDHC UHS-I Card [Newest Version] $18.45 USD
90 MB/S
https://www.amazon.com/SanDisk-Extreme-SDSDXVE-032G-GNCIN-Newest-Version/dp/B01LORO7Z6/
https://tinyurl.com/y89wsdva
SanDisk 32GB Ultra Class 10 SDHC UHS-I $12.99 USD
80 MB/S
https://www.amazon.com/SanDisk-Ultra-Class-Memory-SDSDUNC-032G-GN6IN/dp/B0143RT8OY
https://tinyurl.com/lsdzrz2
SanDisk Extreme PRO 32GB up to 95MB/s UHS-I/U3 SDHC $26.43 USD
95 MB/S
https://www.amazon.com/SanDisk-Extreme-UHS-I-Flash-Memory/dp/B005LFT3QG
https://tinyurl.com/y7stb3ps
Seems to me the K5 would operate at its maximum write speed with any of these
cards or am I missing something?
On 5/15/2018 14:27, Alan C wrote:
Thanks, PJ
That seems to settle it. The K5 bus allows a write speed of 25Mb/s so an Extreme
Plus (30Mb/s) would do better than the Ultra (10Mb/s) which I have. Only the
newer models like the K3 & K1 can take advantage of Extreme Pro cards.
Alan C
-----Original Message----- From: P. J. Alling
Sent: 15 May, 2018 7:49 PM
To: pdml@pdml.net
Subject: Re: SD Card Question
This article seems to indicate a higher bus speed for K3 and a few more
recent aps-c models, but other testing seems to show it closer to my
original reply.
https://www.pentaxforums.com/articles/photo-articles/comprehensive-sd-card-guide.html
On 5/15/2018 9:10 AM, Alan C wrote:
ScanDisk Extreme SD Cards are rated faster than Ultra SD Cards but would the a
K5 be able to take advantage of the higher write speed?
The K5 files are considerably larger than the K7 files so a usable higher
write speed would be quite helpful.
Alan C
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