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Archive 2011 · Fastest CF Cards?

  
 
pappawheely
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p.1 #1 · Fastest CF Cards?


I shoot motorsports and have some new clients that want raw files. What are the fastest cf cards out there? I plan on shooting raw/jpeg so I don't have to change my workflow. Does the speed of the card writing effect the buffer being full? I tried a search, no results.


Dec 30, 2011 at 03:01 PM
Hammy
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p.1 #2 · Fastest CF Cards?


Fastest in camera or to computer?

CF cards have a controller built onto them, so depending on the device they are talking with (which also has a controller), your speeds will vary.

So every camera has a different controller and will talk to cards at varying speeds - depending on how well the controllers sync. Same with computer card readers - which adapt more frequently than cameras do - so they generally net higher speeds.

RG has the best database that I know of for camera to card speeds. Find what works best for your bodies (not necessarily the fastest cards on the market will be fastest in your camera)
They don't update their card to computer database as much though. Computer speeds are probably best with the newest USB3 readers, followed by good USB2 or FW800 readers. But again, depending on the controller in the reader syncing with the CF card, you may get blazing speed downloading, you might not, but it'll prolly be good enough with most high speed UDMA cards out there.



Dec 30, 2011 at 04:03 PM
HerbChong
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p.1 #3 · Fastest CF Cards?


if you are willing to be a bit more daring, the very few eSATA readers out there are probably the fastest but there aren't enough of them out there to really trust and they aren't likely to be around much longer. i don't have sufficiently fast CF cards to test USB3.0 vs eSATA. USB is just a slower protocol by design though it may have a high clock rate. that's why FW400 routinely carries data at well over twice the speed of USB 2.0 with FW800 about 30% faster than FW400.

Herb...

Hammy wrote:
Computer speeds are probably best with the newest USB3 readers, followed by good USB2 or FW800 readers. But again, depending on the controller in the reader syncing with the CF card, you may get blazing speed downloading, you might not, but it'll prolly be good enough with most high speed UDMA cards out there.




Dec 30, 2011 at 04:48 PM
RustyBug
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p.1 #4 · Fastest CF Cards?


+1 @ Hammy compatibility combinations

@ USB 3.0 ... iirc not all computers with USB 3.0 connections have architecture that fully utilize 3.0 yet, i.e. bottlenecked inside, not outside.



Dec 31, 2011 at 11:08 AM
pappawheely
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p.1 #5 · Fastest CF Cards?


I need fast in camera. Will a faster card in camera give you more shots before the buffer is full? I don't want to miss anything if I am shooting a sequence.


Dec 31, 2011 at 06:03 PM
rhyx
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p.1 #6 · Fastest CF Cards?


You are limited by the slowest piece of equipment in your whole setup.

On a computer if you have a USB 3.0 card reader plugged into a USB 2.0 port then you are going to be limited by that port.

The camera has to write to the card in order to free up buffer space. However there is a limit to how fast the camera can write to the card as well as how fast the card can be written to period.

The safest bet in my mind is to buy the fastest card you can up to the point where you know you have already surpassed the camera's write speed. The database mentioned earlier can help you select that.



Jan 01, 2012 at 01:31 PM
Hammy
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p.1 #7 · Fastest CF Cards?


Pappa,

As Rhyx mentioned, the faster 'in-camera' sync'd card you can find, the better your buffer clearing capability and therefore, more shots to be had in burst.

However, if you find yourself not getting the sequence lengths you're hoping for, there are several other ways to get more shots.

Keep in mind, that GETTING the shots should be much more important than other settings that we think we need to have.

- Shoot JPG only. I assume you're shooting outdoors, and lighting conditions don't change that often (rising/setting sun would create a dynamic situation, though)
If you get it right in the camera with proper settings, you not only reduce your workflow, but you increase your buffer substantially.
- Lower ISO. This one is hard to come by usually, and means nothing when shooting RAW, but if JPG, the lower the ISO, the more compression can be had on the images, and therefore higher buffer.
- Shoot smaller files. Again, if shooting RAW, this matters not, but if you can shoot Medium resolution and fill the frame with your subject, so that cropping is minimum, then you'll get alot more photos. The other factor in this is how big of prints you (or customer) plan to make.

Personally, in my business, with up to 20 photographers per weekend shooting 350,000+ files in two days, we shoot Medium to Small JPG: 4-5Mpix. This does several things - allows our downloading and processing of images to quicker than full resolution images and our storage of said images to be alot less than it would be otherwise. Yet, we're still able to print images as large at 24x36 (or larger) with ease because we fill the frame with the lens.

Again, if by shooting RAW, you are limited to ... say ... 10 shots per sequence and then 15 seconds to clear the buffer, thereby limiting additional sequence shots, or your sequence length is limited, then you are not getting the shot needed. So RAW+missed shots is infinitely worse than JPG+got it.



Jan 01, 2012 at 04:15 PM
pappawheely
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p.1 #8 · Fastest CF Cards?


Thanks so much everyone, great info!


Jan 01, 2012 at 06:28 PM
markshelby
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p.1 #9 · Fastest CF Cards?


ISO absolutely affects RAW files and buffer, at least on the 5Dii--at ISO6400 my RAW files often exceed 30MB, where at 3200 they are closer to 26MB.

Regarding card speed, I don't know which card is fastest; however I can tell you that in some cases card speed affects buffer clearing. My Transcend 32gb cards, rated by Transcend at "400x" ($60 on Amazon), empty the buffer on my 5Dii *much* faster than my older 8GB 150X cards of various manufacture. (I picked the Transcend as having a good combination of low price, speed and capacity, I've shot 25,000 photos on two of them over the past several months and ordered a third when I discovered how slow the buffer cleared when using my older "emergency" cards.)

So if you have a newer camera I guess I can tell you that 400x card will clear the buffer much faster than a 150x card; I can't tell you whether a 600x card would be even better, or whether it helps with older camera bodies.

Hope this helps.



Jan 17, 2012 at 06:30 PM
pappawheely
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p.1 #10 · Fastest CF Cards?


Thanks Mark, that's the kind of info I was looking for. I just ordered some of those cards.


Jan 29, 2012 at 03:08 PM
irish-george
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p.1 #11 · Fastest CF Cards?


The fastest are the Lexar Professional 1000X (they are DMA7), but you'll need a Nikon D800 to take advantage of all their speed...to date, that is the only body whose spec sheet I've seen that supports DMA7.


Feb 07, 2012 at 08:45 PM
John Patrick
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p.1 #12 · Fastest CF Cards?


If you're looking for fast download, the Lexar USB 3 reader is the fastest I have, but you need USB 3 to take advantage of it. The good thing is that you can add USB 3 to your PC with a $30 PCIe card.

With my Lexar USB 3 reader and my Lexar 400x cards, I consistently get 57+ MB/sec download, which means I'm now card-speed limited, not reader limited like my UDMA-capable USB 2 readers that maxed out around 26 MB/sec or so.

John



Feb 07, 2012 at 10:17 PM
irish-george
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p.1 #13 · Fastest CF Cards?


John Patrick wrote:
If you're looking for fast download, the Lexar USB 3 reader is the fastest I have, but you need USB 3 to take advantage of it. The good thing is that you can add USB 3 to your PC with a $30 PCIe card.

With my Lexar USB 3 reader and my Lexar 400x cards, I consistently get 57+ MB/sec download, which means I'm now card-speed limited, not reader limited like my UDMA-capable USB 2 readers that maxed out around 26 MB/sec or so.

John


I've got the same reader...but hold out for the variation of it (due out about now, same model) that supports Mode 7 DMA (another UDMA that has been out for years, don't know why the current model only supports through Mode 6).



Feb 10, 2012 at 07:36 AM
pappawheely
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p.1 #14 · Fastest CF Cards?


I had some buffer issues on the shoot but was overall very pleased with the performance.


Feb 13, 2012 at 01:21 PM





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