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Thread started 13 Apr 2013 (Saturday) 18:08
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"Best" SD-card?

 
JohanBorjesson
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Apr 13, 2013 18:08 |  #1

Looking to upgrade from my Sandisk Secure Digital 8GB Ultra SDHC 30MB/s Class 10 to a 16 or 32GB card. Any suggestions?


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JohanBorjesson
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Apr 13, 2013 18:16 |  #2

I'm also wondering if the write speed does make a difference? I mean I've found cards that are 90MB/s.


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samsen
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Apr 13, 2013 18:36 |  #3

It all comes down to what are you going to use that card for.
If it is a HD video recording, RAW still shooting at burst mode, then YES.
If a simple old video camera or still camera; No.
Some newer cameras will not record video in full frame rate and frame size if you are not using the very high writing speed card.


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JohanBorjesson
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Apr 13, 2013 18:37 |  #4

samsen wrote in post #15824556 (external link)
It all comes down to what are you going to use that card for.
If it is a HD video recording, RAW still shooting at burst mode, then YES.
If a simple old video camera or still camera; No.
Some newer cameras will not record video in full frame rate and frame size if you are not using the very high writing speed card.

Only still shooting, RAW+JPEG and I am doing alot of burst as well.


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PapaGary
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Apr 13, 2013 18:50 |  #5

Sandisk has a Product Compatibility Tool (external link).




  
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Jon
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Apr 13, 2013 19:07 |  #6

Any (reputable brand) Class 10 is fast enough for even HD (1920x1080p) video; faster transfer rated will matter more (if your camera has a high enough bandwidth bus to the card) if you shoot bursts a lot. The limiting factors in burst mode are


  1. The size of the camera's buffer (as long as that's got room, you can keep shooting; fortunately that's a published (and reasonably consistent) number.
  2. The speed of the camera's data bus between buffer and card. That's not really documented anywhere, though, so you're just taking a chance going for high speed cards. There's a point at which card speed won't affect transfer rate.
Note, too, that burst mode doesn't just mean holding down the shutter button to hear that machine-gun rattle. I've filled buffers in single-shot mode but with a lot of action. Takes longer than if you're letting the camera rattle along at max. frame rate, but it can be done. And card speed may be a bigger factor here than in "pure" burst mode, since there's more chance for the camera to write out to the card between frames.

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samsen
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Apr 13, 2013 20:27 |  #7

^ T4i is very selective.
Any card less that 30 mbs writing speed, will record video only for one second before giving error message.


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Apr 13, 2013 20:34 |  #8

samsen wrote in post #15824816 (external link)
^ T4i is very selective.
Any card less that 30 mbs writing speed, will record video only for one second before giving error message.

What brands have you tried?


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Apr 14, 2013 12:30 |  #9

samsen wrote in post #15824816 (external link)
^ T4i is very selective.
Any card less that 30 mbs writing speed, will record video only for one second before giving error message.

If I take what you wrote literally, then 30 mbps is not fast enough, since the video bit stream is 5.5 MB/sec (or, 44 Mbps).

However, I suspect you meant 30 MB/sec, in which case that is only about 5 times FASTER than the T4i needs for HD video.


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jbrackjr
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Apr 14, 2013 17:21 |  #10

For the 60D any SDHC or SDXC UHS Class 10 card should work just fine. I have the SD Sandisk Ultra, Extreme and ProExtreme in various sizes. They all work the same. The difference in speed that I see is when uploading files from the card to my computer.


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"Best" SD-card?
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