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Shooting VIDEO to SD cards on the Canon 5D MKIII

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Craig Jackson
Shooting VIDEO to SD cards on the Canon 5D MKIII
on May 21, 2014 at 9:12:23 pm

I've been researching the Compact Flash vs SD card debate around the Canon 5d MKIII for a couple days now and am more or less just as confused as I was when I began.

Some folks seem to think shooting to SD cards is fine, while others advise against it at all costs.

I'm wondering if there is anyone who can provide a definitive answer as to whether or not shooting video to SD cards is a good or bad idea on the MKIII.

Thanks!
c


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Ryan Holmes
Re: Shooting VIDEO to SD cards on the Canon 5D MKIII
on May 22, 2014 at 1:53:09 pm

It depends on what you're shooting - stills vs. video, RAW vs JPEG, Magic Lantern vs. Stock Firmware, etc.

I use Sandisk Extreme and Extreme Pro CF cards for all my shooting. They are pricey compared to the generic brands, but they've never once failed in a shooting environment. And when I'm on set, that's most important to me! We also run Magic Lantern firmware on our 5D3 which requires the SD card slot to be used to circumvent the standard Canon boot process.

Others can correct me, but I believe the CF slot allows for faster data transfer than the SD slot. So if you plan on shooting high frame rate RAW stills (like for sports) the CF card slot is the way to go. If you're just shooting head shoots then the SD slot is plenty sufficient. If you plan on running ML firmware than you'll be using both slots (CF card does the video recording though). If you're shooting video using the standard Canon firmware, then I think either the SD or CF card slot will serve your purpose provided you buy a fast enough card (CF minimum UDMA 6 with write speed of at least 50MB/s, SD minimum Class 10 with a write speed of at least 50MB/s).

Ryan Holmes
http://www.ryanholmes.me
@CutColorPost


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Warren Eig
Re: Shooting VIDEO to SD cards on the Canon 5D MKIII
on May 23, 2014 at 4:32:44 pm

I believe Ryan is correct.

CF cards are currently faster. They are also more robust.

Warren Eig
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Ibrahim Ziazadeh
Re: Shooting VIDEO to SD cards on the Canon 5D MKIII
on Sep 10, 2015 at 9:37:47 am

Hi,

I am also using magic lantern on my 5D3 with a CF card, on which ML is installed. Is there a way to also have a SD card in the slot, while recording video on CF card so that when it gets filled the recording automatically continues into the SD card? If so, will the RAW 1080p recording stop once the recording is being done in the SD card due to the speed limit of the SD slot?

Thanks in advance,
Ibrahim


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Ryan Holmes
Re: Shooting VIDEO to SD cards on the Canon 5D MKIII
on Sep 10, 2015 at 1:51:09 pm

[Ibrahim Ziazadeh] "Is there a way to also have a SD card in the slot, while recording video on CF card so that when it gets filled the recording automatically continues into the SD card?"

No. It's either recording to the CF card or the SD card. You can't fail over to one after the other is full. Remember this is a stills camera, not a video camera. Because the controller on the 5D3 for the CF card is faster, I'd recommend recording RAW to that. Use the SD card slot for the Magic Lantern hack.

Ryan Holmes
http://www.ryanholmes.me
@CutColorPost


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