SDHC to CF card adapter?

[speculator]

I was wondering whether getting some Class 6 sdhc with a cf adapter (like the cr-7000) is a good idea when shooting 1080p? Its relatively inexpensive compared to CF, but will it sustain the bitrates required by the 7d?

[mhood]

Bump. I bought several 16GB SDHC Cards for the D90 that I would sure like to migrate to the 7D...

[Nik Manning]

Bump! this would be good info to have.

[speculator]

Nobody has ever tried this? Not even on a 5d (preferably class 6...i know there was a test around on the cr7000, but it was on a class 4 sdhc)?

[manglerBMX]

it would be nice, as i use sdhc cards in my hmc150.

[Michael Olsen]

Someone with a 5D should take the plunge! :)

[mhood]

please......pretty please......

[edy4eva]

Actually most SD-CF adapters are pretty slow, I've read somewhere it's a maximum write rate of 3-4MB and read rate is about 5-6MB. Can't remember where exactly.
I was about to take the plunge too since I already have 2x Panasonic 16GB SDHC class 6.

[mhood]

Bad news from engadget:

http://www.engadget.com/2009/08/21/video-photofast-cr-7000-sdhc-to-cf-adapter-takes-on-5d-mark-ii/

"...inside of Canon's ultra-quick 5D Mark II (http://www.engadget.com/tag/5dmarkii). Sure, it won't capture 1080p video, but it seems to handle bursting reasonable well in a pinch."

[speculator]

Bad news from engadget:

http://www.engadget.com/2009/08/21/video-photofast-cr-7000-sdhc-to-cf-adapter-takes-on-5d-mark-ii/

"...inside of Canon's ultra-quick 5D Mark II (http://www.engadget.com/tag/5dmarkii). Sure, it won't capture 1080p video, but it seems to handle bursting reasonable well in a pinch."
But that was done using a class 4 card, not class 6 or higher

[mhood]

So there's still hope!! Pretty please with Aspartame on it...

[Eximious]

Unfortunately, even class 6 cards aren't that fast compared with a good compact flash card. However, if you have microSD cards, you might be interested in RAID'ing them together in one of these:

http://dvice.com/archives/2009/06/compactflash-ad.php

Not sure if it has been released or will be in the future. However, to illustrate the speed disparity between the two card formats, check out these links:

CF Cards:
http://www.tomshardware.com/reviews/compactflash-card-memory,2166-11.html

SDHC Cards:
http://www.tomshardware.com/charts/sdhc-memory-card-charts/Avergage-Write-Transfer-Rates,863.html

Also, a great resource to see benchmarks of specific memory cards in actual cameras is right here:
http://www.robgalbraith.com/bins/camera_multi_page.asp?cid=6007-9784

Hope that helps. It would seem that quite a few good SDHC cards could theoretically satisfy the ~45mbps requirement for the codec, but I'm not sure if you'll get sustained throughput that actually matches those numbers.

[speculator]

Actually microsd in raid configuration would be great! Especially the fact that I have an 8gb class 6 ready