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Old May 5, 2009, 8:15 PM   #1
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I want to thank Mtngal again for mentioning that there's a firmware upgrade that allows the K100D to accept SDHC cards. Now that I have the latest firmware, I need to decide how fast a card to get. I know there are many good brands out there, but I've had excellent luck with SanDisk cards so that's what I tend to stick with. Does the card speed make an appreciable difference in the time it takes for the camera to write a raw file or a burst of images to the card? I usually use SanDisk Ultra II cards, but I'm wondering if the Extreme III cards might be worth the extra money.

Anyone care to share their thoughts and opinions?
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Old May 5, 2009, 10:43 PM   #2
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The Extreme III might be worth it for the K20, but I think the write speed of the K100 is less than the Ultra II, so the camera is more of a limiting factor. I've been using Ultra II cards and have been completely happy (but don't use continuous shooting so I'm probably not the best one to ask).
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Old May 9, 2009, 1:35 PM   #3
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The K100D doesn't benefit from write speeds faster than about 5Mb/s in my estimation. A cheap Kingston 4Gb Class 6 SDHC puts in the same performance as my quicker x150 2Gb Transcend which also gave the same performance as a Sandisk Ultra III I once compared with in a fellow K100D owner's camera.

You may notice a worthwhile difference between cards when uploading to your PC if you have a fast SDHC card reader though.
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Old May 9, 2009, 2:40 PM   #4
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Just found a comparison of sd(hc) cards in a German Journal.
"ColorFoto 6/2009"

They compare different cards when used with a k20d

TakeMS 4GB klasse 6 sdhc
59,3s Time needed for 20 raw images (20MB each)
29s Time for 20 jpg's in series
20 Max jpg's in a serie


Kingston 4GB type 4 sdhc
59,3s Time needed for 20 raw images (20MB each)
29s Time for 20 jpg's in series
20 Max jpg's in a serie


Panasonic 4GB type 4 sd
81,6s Time needed for 20 raw images (20MB each)
28s Time for 20 jpg's in series
20 Max jpg's in a seri
e

Scandisk 4GB type 2 sdhc
84,3s Time needed for 20 raw images (20MB each)
36,2s Time for 20 jpg's in series
19 Max jpg's in a serie


Scandisk 2GB ultra II sd
32,5s Time needed for 20 raw images (20MB each)
15s Time for 20 jpg's in series
29 Max jpg's in a serie


Scandisk 4GB ultra III sdhc
31,3s Time needed for 20 raw images (20MB each)
13,9s Time for 20 jpg's in series
32 Max jpg's in a serie


They did the test also with a Nikon D90,
and their result was that they didn't see any reason to get a scandisk ultra III card because the difference with the ultra II was to less.
And they advised the Kingston 4GB type 4 sdhc as best value.

Now I don't know what the capacity to write data for the k100d is, but I guess that the ultra III won't work better than with the k20d
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Old May 9, 2009, 4:00 PM   #5
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When last we had a go-around on card speeds I remember that there were only one or two high-end cameras then available that could utilize the higher 133X (20MB/sec) write speeds accepted by the class 6 Extreme III - all other current dslrs (including all Pentaxes) could not. The 60X (9 MB/sec) write speed accepted by the Ultra II was appropriate for the rest. The highest speed capable cards simply operate at a slower rate in most cameras. We will see what the K7 offers when it arrives, but don't get your hopes up.
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Old May 9, 2009, 7:48 PM   #6
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Thanks for your feedback folks. I bought an 8 gig Ultra II card today. Now I have to make the time to get out and fill it with pictures!
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