http://www.bhphotovideo.com …_CompactFlash_Memory.html![]()
I want the HIGHEST amount of quality from the 7D for VIDEO and PICTURES and will this card be more than enough?
StructuredAmazing Senior Member 603 posts Joined Jul 2010 More info | Jul 23, 2010 01:56 | #1 http://www.bhphotovideo.com …_CompactFlash_Memory.html "Yea, though I walk through the valley of the shadow of death, I will fear no evil"
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tdodd Goldmember 3,733 posts Likes: 3 Joined Jun 2006 Location: Essex, UK More info | Jul 23, 2010 03:45 | #2 At most the camera will write out HD video files at the rate of approx 330MB per minute, which is only 5.5MB/s. A card capable of sustained write speeds of 8MB/s should be more than enough for video. A 60MB/s card would be massive overkill and a needless waste of money. It will do nothing to improve quality. It might speed up downloads from the card. That's all.
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MOkoFOko nut impotent and avoiding Geoff 19,889 posts Likes: 22 Joined Jun 2010 Location: Michigan More info | Jul 23, 2010 04:07 | #3 tdodd wrote in post #10587960 At most the camera will write out HD video files at the rate of approx 330MB per minute, which is only 5.5MB/s. A card capable of sustained write speeds of 8MB/s should be more than enough for video. A 60MB/s card would be massive overkill and a needless waste of money. It will do nothing to improve quality. It might speed up downloads from the card. That's all. From page 255 of the manual.... ^^^ agree, way more than sufficient.
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Thanks, I 've kept reading about problems with buffer overload at even 30MB/s. "Yea, though I walk through the valley of the shadow of death, I will fear no evil"
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Jul 23, 2010 07:13 | #5 StructuredAmazing wrote in post #10588312 Thanks, I 've kept reading about problems with buffer overload at even 30MB/s. Really? Where? I've never, ever read anything like that. StructuredAmazing wrote in post #10588312 And Canon specifically says to have atleast a UDMA card which is what I linked to in the OP The manual says that they recommend a UDMA card 'For shooting still photos during movie shooting'. StructuredAmazing wrote in post #10588312 So I HIGHLY doubt 8MB/s is enough...? I SERIOUSLY think you're wrong. Frank Hollis - Retired mass spectroscopist
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Jul 23, 2010 07:18 | #6 oh okay then (: "Yea, though I walk through the valley of the shadow of death, I will fear no evil"
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jnaks Senior Member 474 posts Joined Mar 2010 Location: Oahu, Hawaii More info | Jul 23, 2010 07:25 | #7 StructuredAmazing wrote in post #10588312 Thanks, I 've kept reading about problems with buffer overload at even 30MB/s. And Canon specifically says to have atleast a UDMA card which is what I linked to in the OP. So I HIGHLY doubt 8MB/s is enough...? the problem is the buffer writing itself, not the card. If you can read this, you don't need a macro | 7D + 5DIII + Waaaay too much spent....
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tdodd Goldmember 3,733 posts Likes: 3 Joined Jun 2006 Location: Essex, UK More info | Jul 23, 2010 07:43 | #8 StructuredAmazing wrote in post #10588312 So I HIGHLY doubt 8MB/s is enough...? Have you even looked at the manual? Perhaps you should tell Canon they don't know what they're talking about. Sheesh!
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Jul 23, 2010 15:54 | #9 Yes, I understand, but for RELIABILITY it's best to get a udma. For us filmmakers, data loss isn't really an option ya know? "Yea, though I walk through the valley of the shadow of death, I will fear no evil"
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TheBrick3 Goldmember 2,094 posts Joined Nov 2009 Location: College Park, Md. More info | It's sucky for photographers, too. And data entry people. In fact, most people are not a fan of it. 1D III 5D II 5D | 580 EX II x 2
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bangarang Senior Member 539 posts Joined Sep 2006 Location: SF Bay Area More info | Jul 23, 2010 20:42 | #11 hollis_f wrote in post #10588450 Really? Where? I've never, ever read anything like that. I SERIOUSLY think you're wrong. I personally have had 300x Kingston cards buffer up and stop recording. NEVER had a problem with sandisk extreme IIIs (30MB/S) and above in that regard so I would venture to say it was the "brand". And it wasn't just one particular kingston card, different jobs, different cards, different owners, so I would say it was that model of card/brand. 300x should be somewhere around 20MB/S so it goes to show that not all rated cards perform the same. Again, sandisk cards have never done me wrong. RED Epic-W 8K + Canon Cinema EOS 1DC
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bangarang Senior Member 539 posts Joined Sep 2006 Location: SF Bay Area More info | Jul 23, 2010 20:53 | #12 tdodd wrote in post #10588555 Have you even looked at the manual? Perhaps you should tell Canon they don't know what they're talking about. Sheesh! FWIW I just tried shooting 4.5 minutes worth (1.5GB) of Full HD to a fake eBay card and never once saw the buffer filling indicator. I purposely made the image data very uncrompressible by panning the camera across a busy scene so that every pixel was being changed from frame to frame. The card gives a write speed of a miserable 7.4MB/s when copying the video file back to the card, yet seems perfectly up to the job of shooting HD video. With my Transcend 133X cards I get a write speed of 10.7MB/s when copying the same file to the card and a read speed of 27MB/s when copying from the card. Again (obviously) no problem shooting video. Shooting with a 60MB/s card will not allow you to shoot 60 minutes of video in 10 minutes, so what's the advantage? It just costs a lot more. Thanks for the test rather than just pointing at the manual and parroting it. At the same time, just because you don't experience those issues on one attempt doesn't mean it can (or can't) happen. My sister studio has shot with kingstons for a few shoots, then on one shoot it buffered up during an important shot. You could argue with them till you were blue in the face about what the manual says, bottom line it buffered up and messed up a shot. Those cards were then regulated to emergency backup use only. I suggested they move over to the sandisk extreme IIIs at the time, and not a single buffer problem since. RED Epic-W 8K + Canon Cinema EOS 1DC
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