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06-15-2011, 09:46 PM   #1
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K-7 Memory Card MB/S

I'm thinking about upgrading the memory card for my K-7. At what point does the megabytes per second become irrelevant on the K-7?

Is it at 15, 20, 30 or 45 MB/S?

I don't want to spend more than needed but do want to be able to take the largest burst of pictures possible when the opportunity presents itself.

Thanks for your responses.

06-15-2011, 09:49 PM   #2
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Just buy SanDisk Extreme III cards and be done with it (class 6), cards are so cheap these days why bother with sub standard quality/reliability. The printed MB/s on SD Cards are not promises that's for sure.
06-15-2011, 10:04 PM   #3
hcc
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Unless you do Hi continuous shooting, the advice of twitch is sound.

If you do Hi continuous shooting with long bursts, you want a fast access card to free up the buffer more rapidly.
06-15-2011, 10:21 PM   #4
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I agree with the above, except mine are Lexar Platinum IIs.

If you go with a class 10, be sure to spend the money for a high quality card. I foolishly bought at a camera store's "going out of business" sale and took their house brand class 10 card (all they had) at a great price. The clerk assured me they were re-branded Delkin cards. In use, Hi-Continuous shooting at a WWII warbird flyover left me with about a 10% +/- write error and corrupt file rate and some once-in-a-lifetime images lost. By the time I figured this out, the store really was out of business so no refund. I took a hammer to that card in frustration.

Quality pays for itself.

06-16-2011, 07:36 AM   #5
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Well it is probably as fast as K-5 is, so a SanDisk Extreme III 30MB/s card is enough since there is no speed advantage going to the PRO card UHS-I 45MB/s. Except maybe for future use.
06-16-2011, 08:19 PM   #6
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Original Poster
Just for others info. I also contacted Pentax and they said Pentax Japan hasn't published results on the write speed of the K-7. They said, however, that I will see a benefit from upgrading to a Class 10 card. They also said the 45 Mb/s write speed is overkill on my camera. The card will work on the K-7 but since it doesn't support that much speed it will not allow the buffer to fill more quickly than say a 30 Mb/s card.
06-17-2011, 08:01 AM   #7
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QuoteOriginally posted by PentaxRev Quote
Just for others info. I also contacted Pentax and they said Pentax Japan hasn't published results on the write speed of the K-7. They said, however, that I will see a benefit from upgrading to a Class 10 card. They also said the 45 Mb/s write speed is overkill on my camera. The card will work on the K-7 but since it doesn't support that much speed it will not allow the buffer to fill more quickly than say a 30 Mb/s card.
Maybe they read the test here on the forum
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