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Old Aug 22, 2010, 5:26 AM   #11
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Quote:
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Can somebody help me?
How about eBay? Many sellers include international shipping
in the price. Check feedback carefully before you buy. If in
doubt, post a link to the auction before you buy.

32GB is a lot of eggs in one basket. Do you really need such
a big card?
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Old Aug 22, 2010, 8:23 AM   #12
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Yes it is a lot, but i will shoot raw + jpge and video record many minutes.
Newegg is offering 32Gb the card at almost the same price of a 16Gb in eBay:

http://cgi.ebay.com/Sandisk-16GB-CF-...a_Memory_Cards

Is there a difference in performance between both? What does the word EXTREME means in this last card? Thanks for the help.
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Old Aug 22, 2010, 12:16 PM   #13
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Extreme series is 600X.
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Old Aug 22, 2010, 12:38 PM   #14
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Extreme series is 600X.
The new Sandisk Extreme Pro UDMA CF cards are 600x (90MB/Second).

The Sandisk Extreme UDMA CF cards are 400x (60MB/Second).

The "Pro" in the name makes a difference. ;-)
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Old Aug 22, 2010, 12:47 PM   #15
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If you scroll down on this page, you'll see a table that shows how many raw+jpeg frames Rob Galbraith got in 30 seconds using a 7D with some of the newer UDMA Cards:

http://www.robgalbraith.com/bins/con...=7-10044-10297

The 7D has a fairly large buffer, and you're not going to see any difference in speed until the internal buffer fills up. Then, you may see some differences in "full buffer" frame rate shooting raw, and may see faster full buffer flush times. But, unless you plan on taking lots of consecutive bursts at higher frame rates shooting raw, you may find that you'll get better bang for the buck sticking with one of the 400x cards.
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Old Aug 22, 2010, 5:54 PM   #16
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Thank you very much for the responses.
Now the decision is close:

An Extreme 400x card will be enough.
About the capacity, the following are Canon numbers for RAW and JPEG in Megabytes (not pixels, the number of pixels for both is the same: 17.9 Megapixels) for the EOS 7D:

RAW: 25.1 Mb
JPEG: 6.6 Mb

RAW+JPEG: 31.7Mb

A 16Gb CF card will shoot: 504 picks.
A 32Gb CF card will shoot: 1008 picks.

I remember traveling days when I shoot more than 300-400 picks with a p&s. Unless having 2x16Gb CF cards implies some kind of benefit, I think a 32Gb CF card will be a safer bet.

But what about battery life? Again, Canon manual numbers:

Without flash

At 23C/73F: Aprox. 1000
At 0C/32F: aprox. 900

With flash at 50%

At 23C/73C: Aprox. 800
At 0C/32C: Aprox.: 750

It seems that a 32 Gb CF card is better for a whole shooting-video day.
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Old Aug 24, 2010, 8:14 PM   #17
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Speed is not an issue with the camera. Most cards still operate faster than the camera can write to them, even 133X. Where the speed pays off is when you are trying to get the Images/video off of the card. Slow card on USB = long wait (15 minutes for 8GB) Fast Card on firewire 800 takes about 3 minutes for the same 8GB.
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