D7100 and SDHC card read/write speed: 45 MB/sec vs 90 MB/sec?

Started Mar 18, 2013 | Discussions thread
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Jim Kaye
Jim Kaye OP Senior Member • Posts: 2,680
Re: D7100 and SDHC card read/write speed: 45 MB/sec vs 90 MB/sec?

Thanks, stonage, I think you've answered my question.  It looks like your test was done at the same settings I used and you got 3.8 FPS with the 95 MB/sec card (after the buffer filled), which is around twice as fast as I was getting (using a less accurate timing method, to be sure) with a 45 MB/sec card.  So it seems the limitation in frame rate after the buffer fills is mostly due to the write speed of the card rather than the D7100's capacity to push the data through its own circuits.

I appreciate the quick response!


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Jim Kaye 'I believe that the electronic image will be the next major advance. Such systems will have their own inherent and inescapable structural characteristics, and the artist and functional practitioner will again strive to comprehend and control them.' -- Ansel Adams, 1981

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Nikon D750 Nikon D7200 Nikkor AF-S 300mm f/4E PF ED VR Sigma 24mm F1.4 DG HSM Art
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