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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 21 Dec 2011 (Wednesday) 12:37
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Memory card speed

 
Nu2this
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Dec 21, 2011 12:37 |  #1

I will be receiving my new 5D Mark II today and was wondering what write speed works best for this camera. SanDisk has several 60ms cards and I've seen some 90ms cards also. I don't mind paying for something that will help performance but don't want to spend money unnecessarily either. Any advise?


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mrbubbles
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Dec 21, 2011 13:06 |  #2

Do you mean 60MB per second and 90MB per second? Either one will work fine.


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alex.hondsmerk
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Dec 21, 2011 13:06 |  #3

The faster the write speed on the card, the faster it will empty the buffer - if you're not going to be shooting video or spamming huge amounts of photos on continuous burst, then you could live with a slower card (~30MB/s). However, for video you'll want a 60 MB/s card at least, and you'll notice the difference during everyday shooting too. Get the fastest that you can reasonably afford, but don't feel you have to give out $$$ on a 90 MB/s card unless you really want to.


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Nu2this
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Dec 21, 2011 22:03 as a reply to  @ alex.hondsmerk's post |  #4

Thanks for the feedback. I don't shoot a lot where I need fast speeds or burst rates from the camera, mostly travel and landscape photography. Want to start doing still and product photography as well. I'm thinking a couple of SanDisk Extremes probably 16 GB at 60ms will take care of my needs for now.


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oklaiss
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Dec 21, 2011 23:46 |  #5

I think I've read that 30mb/s will work fine for video and with the low burst rate of the 5dii you probably wont need much more, however 60mb/s can't hurt.


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fibrepunk
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Dec 21, 2011 23:55 |  #6

30MB/s is fine with the 5D II, but with 60MB/s or faster you get to read it from the memory card faster from your reader. I would go with with the 60MB/s right now since the price for 90MB/s is quite a bit more than the 60MB/s for the performance unless you need the fastest cards.


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Perfect_10
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Dec 22, 2011 00:18 as a reply to  @ fibrepunk's post |  #7

I run Lexar Professional 400x CF Cards in both my 7D and 5D II .. consistently fast and totally reliable.


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hollis_f
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Dec 22, 2011 06:26 |  #8

alex.hondsmerk wrote in post #13579762 (external link)
The faster the write speed on the card, the faster it will empty the buffer

Up to a point. That point being when you saturate the camera's ability to write any faster. Rob Galbraith's testing (external link) seems to suggest 30 MB/s is the limit for the 5D MkII.

alex.hondsmerk wrote in post #13579762 (external link)
However, for video you'll want a 60 MB/s card at least

I can't believe how often this is repeated. Video is not at all demanding. My 7D's manual says that 8MB/s is required. I doubt the 5D is any more demanding.

So, what that all adds up to is - anything faster than 30MB/s is wasted unless you have something faster than USB2 for your card reader. Then a faster card will perform exactly the same in the camera, but you'll probably be able to download to PC faster.


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alex.hondsmerk
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Dec 22, 2011 07:42 |  #9

OK, I stand corrected! I'd just noticed that with one my 50D and of my old cards, the write speed was tragically slow, with a 200x it was noticeable quicker and with a 600x it was barely noticeable.


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msowsun
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Dec 22, 2011 09:03 |  #10

hollis_f wrote in post #13583744 (external link)
Up to a point. That point being when you saturate the camera's ability to write any faster. Rob Galbraith's testing (external link) seems to suggest 30 MB/s is the limit for the 5D MkII.

That test you quote was done in 2008 before the newer 533x and 600x cards where released.

Here is another of his tests showings write speeds up to 45MB/s with today's faster cards.

http://www.robgalbrait​h.com …age.asp?cid=7-10043-10255 (external link)

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The 7D is only slightly faster at 53MB/s.

http://www.robgalbrait​h.com …age.asp?cid=7-10044-10297 (external link)

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StructuredAmazing
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Dec 22, 2011 15:44 |  #11

Nu2this wrote in post #13579606 (external link)
I will be receiving my new 5D Mark II today and was wondering what write speed works best for this camera. SanDisk has several 60ms cards and I've seen some 90ms cards also. I don't mind paying for something that will help performance but don't want to spend money unnecessarily either. Any advise?
IMAGE NOT FOUND
HTTP response: NOT FOUND | MIME changed to 'text/html' | Content warning: script

well here's one advice.
DONT GET IT FROM EBAY.
make sure its a legit card.
if you want to buy it cheap, go online and get it from amazon.
If not, then go to your local retail store.


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ejenner
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Dec 22, 2011 15:54 as a reply to  @ StructuredAmazing's post |  #12

I wouldn't go about 60MB/s, but I don't think you'll notice that much difference in max number of shots in a burst at 30BM/s.

I got 60MB/s just to be sure since 2 of those were $60 more than 30MB/s and it didn't seem much more when spending over $2000. They might write to the PC quicker and that was other factor, but the write speeds on my USB2 reader seem to top out at 15-17MB/s anyway.

I could probably have saved myself $60, since I have yet to fill the buffer on my 5DII.


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modchild
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Dec 22, 2011 16:01 |  #13

Best thing to do is future proof yourself. If you can afford the faster cards then get the faster cards. Who knows what camera you'll be using in 2 years time, could be the same but you never know, and if you need a faster card for that you'll be kicking yourself for not getting them now.
I got 2 16Gb Duracell 300x and 2 16Gb 600x and generally use the 300x in my 5D2 and the 600x in my 7D. Don't know if it makes it work any better, just the 7D has more FPS so it seemed logical to put a faster card in it. I get 30MbPS upload speed on my 300x and just about 55MbPS on my 600x cards on my USB 3 reader so it sure doesn't take too long to empty the cards.


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Memory card speed
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