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Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D7100, D7000 (Public) topic #4469
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Subject: "RE: My new UHS-1 Card arrived" Previous topic | Next topic
KnightPhoto Gold Member Nikonian since 18th Dec 2006Sun 27-Mar-11 02:51 PM
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#13. "RE: My new UHS-1 Card arrived"
In response to In response to 12


Alberta, CA
          

>, the SanDisk Extreme 30MB/s took 9 seconds and the new 45MB/s UHS-1
>card took 7 seconds to totally clear the buffer.
>
>Since it takes only about 1.5 seconds to take the 10 shots
>that fill the buffer in the camera a card that could keep up
>with that data rate would need to have a data transfer rate of
>about 90MB/s. And this assumes the internal
>processing/buffer/write system could deliver data at that
>rate. In fact a card like that would minimize the need for a
>large internal buffer.
>

Thanks again Dean! This time you are saving me money

For the 9 second to 7 second difference I won't rush out just yet and get a UHS-1 card. I know the CF top of the line cards already achieve 90 Mbps so maybe we aren't too far away in the SD format. IIRC even Panasonic (and other) were supposed to announce some 75 Mbps SD cards but I don't recall seeing them released to market.

I am dreaming of a day when we can do what you indicate in your last sentence. No need for a large buffer on the camera if the throughput to the card is fast enough. It will be interesting to see if the buffer emptying can be dropped from the 7 second level with yet a faster card or whether in fact that is now the limit of the speed the camera can do. I think I read somewhere else the 45Mbps cards may now be at the limit of the buffer emptying capacity of the camera, but I prefer your tests as they are clear and concise.

The D7K buffer is comparatively miserly as compared to higher in the Nikon camera food-chain so we have to be pretty careful with our bursts. That is one thing I notice when I still occasionally use my D300, it hammers away merrily in comparison on long bursts.

Best regards, SteveK

'A camera is an instrument that teaches people how to see without a camera.' -- Dorothea Lange
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This is a hot, active topic!Image Buffer Size and Settings [View all] , DeanAZ Moderator, Sat 08-Jan-11 04:57 AM
 
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MEMcD Moderator
08th Jan 2011
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               Reply message RE: Image Buffer Size and Settings - Firmware Change
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22nd Mar 2011
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23rd Mar 2011
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23rd Jul 2011
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25th Dec 2011
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Reply message My new UHS-1 Card arrived
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27th Mar 2011
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27th Mar 2011
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29th Nov 2011
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24th Mar 2012
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02nd Jul 2012
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28th Aug 2012
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22nd Feb 2013
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hnagy
22nd Feb 2013
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Reply message Secrets revealed...
Jim Pearce Silver Member
24th Feb 2013
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Reply message RE: Secrets revealed...
dagoldst Silver Member
11th Mar 2013
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     Reply message Well, even if the D7100 uses the same chip...
Jim Pearce Silver Member
11th Mar 2013
68
          Reply message RE: Well, even if the D7100 uses the same chip...
tijokjoy
11th Mar 2013
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               Reply message RE: Well, even if the D7100 uses the same chip...
dagoldst Silver Member
11th Mar 2013
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               Reply message Or you bought the wrong cards David!
Jim Pearce Silver Member
11th Mar 2013
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               Reply message RE: Or you bought the wrong cards David!
dagoldst Silver Member
11th Mar 2013
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               Reply message RE: Well, even if the D7100 uses the same chip...
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15th Apr 2013
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11th Mar 2013
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12th Mar 2013
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01st May 2013
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21st Dec 2013
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