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DPChallenge Forums >> Hardware and Software >> Best dual cards for 5d mark iii??
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04/10/2017 12:20:02 AM · #1
Looking at Sandisk cards for a 5d markiii writing to both cards simultaneously (SD card to backup CF). Not shooting video, not shooting burst. Primarily weddings and portrait.

Could a CF Ultra 50mbps and SD Ultra 80mbps combo work??
04/10/2017 07:14:22 AM · #2
You want much faster on the CF card. Each RAW from that camera is approx 25MB in size, some only writing 2 per second is far too slow.

My CF card is 160MB/s and it keeps up nicely. The slow down comes from the SD card, because the 5Diii cannot take advantage of the new SD card styles. I have a 95 MB/s in there, and I am pretty sure it doesn't fully take advantage of that. But it's nice to have the read speed when pulling the photos to a computer.

https://www.amazon.com/gp/product/B00IAYFDIC

https://www.amazon.com/gp/product/B012PL6K8M
04/10/2017 07:27:56 AM · #3
//24h.pchome.com.tw/prod/DGAG4W-A9007ZXVQ?q=/S/DGAG8R

//24h.pchome.com.tw/prod/DGAG0H-A9007R2NP?q=/S/DGAG73
04/10/2017 10:35:05 AM · #4
Originally posted by GeorgesBogaert:

//24h.pchome.com.tw/prod/DGAG4W-A9007ZXVQ?q=/S/DGAG8R

//24h.pchome.com.tw/prod/DGAG0H-A9007R2NP?q=/S/DGAG73


Some things to note with those links.

First one: A CF card is NOT the same as a CFast card. They are not at all compatible. The 5Diii cannot use a CFast card.

Second one: That is complete overkill for a 5Diii. The 5Diii does not have the extra pins needed to get that full UHS-II performance. See the pin layout of the back of the card: https://havecamerawilltravel.com/photographer/uhs-i-vs-uhs-ii-sd-microsd-cards
You could at least read into your computer faster, but again, only if you buy a UHS-II reader

Message edited by author 2017-04-10 10:35:38.
04/10/2017 01:12:58 PM · #5
Thanks for the info.
I read that it is not even implemented in the newer 5D Mark IV...
04/10/2017 03:20:42 PM · #6
Originally posted by GeorgesBogaert:

//24h.pchome.com.tw/prod/DGAG4W-A9007ZXVQ?q=/S/DGAG8R

//24h.pchome.com.tw/prod/DGAG0H-A9007R2NP?q=/S/DGAG73


525mbps read 430 write? 0_0 Wow. If only
04/10/2017 03:28:48 PM · #7
Originally posted by giantmike:

You want much faster on the CF card. Each RAW from that camera is approx 25MB in size, some only writing 2 per second is far too slow.

My CF card is 160MB/s and it keeps up nicely. The slow down comes from the SD card, because the 5Diii cannot take advantage of the new SD card styles. I have a 95 MB/s in there, and I am pretty sure it doesn't fully take advantage of that. But it's nice to have the read speed when pulling the photos to a computer.

https://www.amazon.com/gp/product/B00IAYFDIC

https://www.amazon.com/gp/product/B012PL6K8M


I was wondering if it even took advantage of the 160mbps. Will go with 120mbps on the CF and 95 on the SD. Thanks man
04/10/2017 04:01:14 PM · #8
Also! Last night that same lexar showed up at $47 on Amazon. Wish i'd waited :/
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