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Old Apr 7, 2010, 6:12 PM   #1
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Default Which SDHC card for new Pentax K-7

Hiya,

I am sorry if this question has been asked dozens of times before, but which SDHC card would be good for a new Pentax K7. Is the the following a good idea? : SanDisk Extreme III 30MB/s Edition High Performance Card - Flash memory card - 8 GB - Class 6 - SDHC

Thanks.

Ned
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Old Apr 7, 2010, 6:19 PM   #2
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If you can get a transcend class 10, 8gb it may be a less expensive route the the sandisk. I use a delkin class 6 16gb, panasonic class 6 8gb, and a hama class 6 8gb. I have not notice any difference between the different brands. I just order a transcend class 10 16gb. So I will see how much faster it is over the class 6 cards.
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Old Apr 7, 2010, 6:20 PM   #3
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Quote:
Originally Posted by shoturtle View Post
If you can get a transcend class 10, 8gb it may be a less expensive route the the sandisk. I use a delkin class 6 16gb, panasonic class 6 8gb, and a hama class 6 8gb. I have not notice any difference between the different brands. I just order a transcend class 10 16gb. So I will see how much faster it is over the class 6 cards.
Great. Thanks for the advice.

Ned
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Old Apr 7, 2010, 6:49 PM   #4
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Ive got a sandisk (16gig) and a kingston (4gig)

they both work fine, id reccomend getting atleast a 16 to save yourself from having to buy multiple 4 or 8 gigs.

I still find myself maxing out the 16 in a days shooting and loadin my 4 gig in

I shoot raw only. I should probably get another 16 gigger for extended shooting days

I take a lot of photos
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Old Apr 7, 2010, 6:57 PM   #5
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Depends if you are shooting in continuous mode or shooting HD video to be honest. I have a 4GB Sandisk Extreme III card and it lets me shoot full quality HD video (although for only 9 minutes...) and my generic 8GB Class 4 SD card lets me shoot 20-odd minutes in one star 720p video mode.

Not had any problems with continuous mode with the generic class 4, although not tried it with continuous RAW mode.
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Old Apr 7, 2010, 7:09 PM   #6
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Hi Ned,

I use Sandisk Extreme III (class6) 20MB/sec 4 GB cards in my K-7 and get good performance from them. Other users have suggested that long strings of continuous shots benefit from the 30MB/sec cards, as they seem to clear the buffer faster, but it would be a very rare occasion for me to run into this problem. I did a few unscientific tests that suggested a continuous write speed of about 18MB/sec, but I stopped at 5 shots, so apparently didn't fill the buffer. This test was realistic for my use, so that's what I went with, and I'm happy with the performance of the cards. I shoot jpeg, so I don't need the really big cards.

Just to vent some, I think that the "class" system of speed rating for SD/SDHC cards is just stupid, especially since most DSLRs can write considerably faster than the fastest "class" rating (10?), and this is not a new development. I remember someone testing the K10 when it was the then-current Pentax flagship, and it wrote at 16-18 MB/sec -- years ago.

Scott
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Old Apr 7, 2010, 11:18 PM   #7
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It really does depend on what you are going to do with it. I hardly ever shoot video and only occasionally shoot continuous shots (and not more than about 3-5 at a time, very short bursts). I've been using a Sandisk 8 GB Ultra II, with several 4 GB as back-up and don't have a problem. If I were shooting much video or was shooting birds like Scott does, I'd definitely get something like the Extreme III. As it is, the cheaper card works fine for me.
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Old Apr 8, 2010, 2:08 AM   #8
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Many thanks, indeed, everyone for your kind advice! Good to know!

Ned
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Old Apr 9, 2010, 2:29 AM   #9
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Hi Ned.

Personally I use a San Disk Extreme 8GB Class 6 card and have never come close to filling it. I always carry an old 2GB San Disk Ultra II card as back up though just in case I do. The class 6 is also plenty fast enough and I've never had an issue with action shots (fast moving animals / birds in flight). I rarely shoot video and when if I do it's only short clips.

Also when I'm in the market to buy another card it wouldn't be a 16GB unless prices drop substantially as I would prefer to carry multiple cards rather than have something go wrong with one and be stuck on location without any memory or, whilst on vacation, to be carrying around a whole holiday's worth of photos everywhere I go (if you haven't taken your laptop with you or don't have some other form of off camera storage).

Switching cards only takes a few seconds and unless you are covering a football match or are a paparazzi that's not going to be an issue for most !
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Old Apr 9, 2010, 4:11 AM   #10
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Hi Frogfish, thanks for your advice... learning lots of new things that are good to know...

Ned
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