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Old Jul 19, 2011, 2:05 PM   #21
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Cf will be working on faster then 600x like sd is working on the class 16. They all will get faster
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Old Jul 19, 2011, 3:25 PM   #22
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Panasonic UHS-1 Class 10 8GB SDHC Memory Card, 90MB/s Transfer Speed
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Old Jul 19, 2011, 4:09 PM   #23
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and it is still slower then a udma 7 cf at 100

the panny card is 16gb at 90 dollar sells for 90, the cf with 600x is 90 with 16gb 40 dollar

http://www.amazon.com/Duracell-Speed...ies/B004AM6SQO

So it really comes down to what format your camera is set up for as which is best.
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Old Jul 19, 2011, 4:38 PM   #24
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The fastest CF cards are faster than the fastest SD cards. ...
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The fastest CF Cards are UDMA 7 cards which have maximum write speeds of 100 MB/sec, or 667X. The fastest SD Cards are UHS-1 cards which have maximum write speeds of 90 MB/sec, or 600X.
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... You can not get a sd faster then class 10 which is 30 [MB/sec] ...
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Actually, the fastest SD cards are the UHS-1 cards. ...
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But they are not available yet. ...
I agree and already stated that CF Cards are faster than SD cards. You said that the fastest SD Cards were Class 10, and that UHS-1 cards were not available yet. That's what I took issue with.
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Old Jul 19, 2011, 4:43 PM   #25
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it is a class 10 card still actually, but it is faster then the 30 that most other class 10's are. But class 16 is not out yet, and that was what I was referring to.

And the panny is write 25 and read 90, the cf 600x is 90 write.
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Old Jul 19, 2011, 7:00 PM   #26
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I don't shoot video - and I rarely burst more than a few shots at once and therefore never over-run my camera's buffer - so the high speeds don't really matter to me
And the CF cards don't fit in my D80
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Old Sep 16, 2011, 8:35 PM   #27
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I just saw this thread (again) and like csd said the 5 year jump is really something to see.

A lot has changed over this time and things are still changing at a faster and faster rate.

The reason I came back to this thread is I am trying to find a site that has up to date testing information CF and SD memory.

I was in a situation last weekend where I had to buy some CF memory and ended up with a couple of Delkin Pro UDMA 6 8GB CF cards. The speed on the card is 450x but compared to my Transcend 300x CF card the Delkin takes at least twice as much time to write to my HD.

If memory serves me right the Transcend was very inexpensive too.

Well, that's my 2 cents on CF cards. I hope to find some current data base that has the read/write speeds of currently sold cards.
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Old Sep 17, 2011, 5:42 AM   #28
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Does anyone have experience using an SD card via an adapter in a camera that takes CF cards?
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Old Sep 18, 2011, 12:31 PM   #29
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I hope to find some current data base that has the read/write speeds of currently sold cards.
Rob Galbraith has a good database here:

http://www.robgalbraith.com/bins/rea...?cid=6007-9438

The main problem with it is that only read speed is being tested with the card reader tests, and most of the camera specific tests don't include newer cards.

So, the tests can be misleading. For example, Rob's tests of a Panasonic UHS-1 card SDHC card show read speeds of over 70MB/Second in faster readers.

Yet, if you look at tests of those cards elsewhere, you'll see that write speed is relatively slow in comparison (less than 20MB/Second on tests I've seen).

Here's a site with tests of many cards, tested in multiple cards readers (since the card reader is going to be the bottleneck if you're using one that's USB 2.0, faster readers are also used).

http://www.hjreggel.net/cardspeed/speed-by-cards.html

Note how slow the write speeds are on the Panasonic UHS-1 Cards here:

http://www.hjreggel.net/cardspeed/sp...ards-sduh.html

Here's another page with some tests of them using various block sizes with aligned writes. Of the UHS-1 cards tested there so far, the Sandisk cards have the fastest write speeds (even though read speed is better from some of the others like the Panasonic).

http://www.hjreggel.net/cardspeed/cs_sdxc.html

Here are some tests of faster CompactFlash cards. But, not all cameras support the UDMA 5 and 6 transfer modes needed to get higher transfer speeds:

http://www.hjreggel.net/cardspeed/cs_udmacf.html

Note that Rob Galbraith did test some of the fast UDMA CF cards using that supported faster transfers a while back, including a Canon 7D. See those here (and note that the camera tests also show write speed, but the reader test is only showing read speed).

http://www.robgalbraith.com/bins/con...=7-10044-10297
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Old Sep 18, 2011, 2:28 PM   #30
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lomitamike:

For the A77 you've got preordered, I'd probably go with one of these cards:

Sandisk 30MB/Second Extreme III Memory Stick Pro HG Duo. These test faster than rated in a card reader that supports the latest 8 bit parallel transfer models the Pro HG Duo cards provide. For example, here's one showing almost 42MB/Second write speeds from one:

http://www.hjreggel.net/cardspeed/cs_SDMSHX3-008G.html

Or, go with a Sandisk UHS-1 Extreme Pro SDHC card. It tested at over 44MB/Second Write speeds in a fast reader:

http://www.hjreggel.net/cardspeed/cs_SDSDXP1032G.html

Now... I can tell you from testing both a Sandisk 30MB/Second Extreme II Memory Stick Pro HG Duo card, and a Sandisk 30MB/Second Class 10 Extreme SDHC Card in previous Sony models (for example, the A550), that the Sandisk Memory Stick Pro HG Duo card was significantly faster compared to that SDHC Card (as you'd expect, since it's also faster in card reader tests). But, that was not one of the newer UHS-1 cards (and the A77 should work better with the newer ones).

See how the Class 10 Sandisk Extreme SDHC Card tests here (maximum write speed of just over 23MB/Second, whereas a Sandisk 30MB/Second Memory Stick Pro HG Duo card tests at over 40MB/Second write speed, which is faster than rated):

http://www.hjreggel.net/cardspeed/sp...cards-sdc.html

Note the results using both card types in our A550 review here (the Sandisk Extreme III Memory Stick Pro HG Duo allowed more raw images in a raw before a slowdown, with faster full buffer write times compared to the Sandisk Extreme SDHC Card).

http://www.steves-digicams.com/camer...lusion-43.html

Quote:
Switching to RAW with the Optical Viewfinder, I was able to capture 25 images in 5.2 seconds (4.8fps) before the camera slowed down, still capturing 87 images over 30 seconds. The camera's buffer took 7 seconds to clear with the Sandisk 8GB 30MB/Second Pro-HG Duo card.

Switching to a Sandisk 4GB 30MB/Second SDHC card, I was able to capture 14 images in 3 seconds before the camera slowed down, capturing 49 images in 30 seconds. A full buffer took approximately 11 seconds to clear with the Sandisk 4GB 30MB/Second Class 10 SDHC Card. In other words, the best performance when shooting RAW is with a Sandisk 30MB/Second Pro-HG Duo card, allowing more RAW images before the camera slows down, with faster full buffer clear times (as compared to a Sandisk 4GB 30MB/Second Class 10 SDHC Card, which tested slower than Sandisk Pro-HG Duo media in this camera model).
I have not seen any tests of the newer Sony models using a Sandisk Extreme Pro UHS-1 SDHC card yet. My guess is that they'll be just as fast or faster in the Sony A77 as the Sandisk 30MB/Second Extreme III Memory Stick Pro HG Duo cards (since both have write speeds over 40MB/Second using fast readers).

But, we'll have to wait until these cameras are tested using newer UHS-1 cards to find out (as the A77 you ordered will probably take advantage of UHS-1 transfer modes when using them, but until they're tested, we won't know if they're faster compared to the Sandisk 30MB/Second Memory Stick Pro HG Duo cards).

Just to make things more interesting, Sony is now shipping 50MB/Second Memory Stick Pro HG Duo cards. See them on the Sony Japan site here (click on an image showing the packaging, and you'll see them labeled as 50MB/Second):

http://www.sony.jp/memorystick/products/MS-HXB/

I also see the same card models listed on some vendor sites now. They're labeled with a B suffix (the previous model has an A suffix). For example, this listing for a MS-HX8B:

http://www.amazon.com/Sony-Flash-Mem.../dp/B004QGRXGS

But, i have not seen them tested yet (in either card readers or cameras) to see if write speed is faster than the Sandisk 30MB/Second Extreme III Pro HG Duo cards (or not).
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