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(64GB )Fast card - Great for raw video
on 30 June 2013
I now have two of these cards (64GB) and was prompted to purchase them after Magic Lantern unleashed the raw video capabilities of the Canon 5D MKIII.
What is important is that both cards I have received have worked with no issues from day one and continue to perform flawlessly. After a little research into these cards it appears that one of my cards has the slower SM2236AB controller, however this card will still give sustained write speeds of around 94MB/s which is enough to write continuous 1080p raw @ 25fps with the ML firmware.
The cards fit perfectly into all CF card slots I've used in camera and on card readers. They format as you'd expect any drive to (exFAT formatting for the 5D MKIII is great). The read an write speeds, although never as good as suppliers state, are fast enough to satisfy the most demanding shoots. In both photo and video modes these cards have never let me down. I have not lost any data on these cards as of this time and have been shooting with them every day since I purchased them.
I would advise 64GB to be the perfect size for raw video as they are faster than the 32GB and 128GB cards and offer enough storage for most work - I wouldn't recommend shooting raw in a docu environment as you'll chew through data in no time. That's a no brainer!
To confirm, both my cards will shoot continuous 1080p @ 23.976p, 24p, 25p raw video without breaking a sweat. I can also get 25p from the 3x crop too most of the time, but this result changes with each build. Bear in mind that depending which ML hack (at this stage - things change everyday with ML) you use can determine whether or not you need to "warm up" the card/camera by running off a quick video with skipped frames. I'd suggest reading the ML forum regarding this, but as of the latest (27th June) build I don't have to warm up the card/camera.
I'd recommend these cards to anyone that needs a fast card, wants to save themself a whole chunk of cash and wants to dabble in ML raw video. They do everything I want them to.
Edit: My faster card (SM2236AC) allows me to shoot 1920x1280 at 24p continuous almost every time and when I select 25p the firmware states I have about 2000 frames (however I have recorded past this and not had any skipped frames). ML firmware states the card is writing around 100MB/s at this resolution and frame rate.