>>I'm speculating the 7100 isn't fast enough to notice any >>difference between individual Class 10 cards and a good >SDHC >>card is more than adequate (unless of course you need to >>exceed the 32GB or whatever storage cap). >> >>Appreciate any tech specs, links, or insights...? > >The definitive SD and CF card in-camera speed tests can be >found here. The D7100 has not specifically been tested yet, but the >D800/800e and D4 write speed tests are in the same ballpark.
Wow - there's some pretty unusual results in some of those tests Howard... Thanks for the link. Quite noticeable differences between different capacity cards of the same type/spec... e.g. Suggests for the D800 a "SanDisk Extreme Pro 95MB/s 8GB" is the best possible SDHC card, offering a real speed of 42MB/s!
>Rated speeds published by SanDisk, Lexar, Integral, and all >the rest of the brands, are currently based on USB 3.0 data >reads & writes between a computer hard drive and an >external card reader. Nothing to do with actual card >performance in the camera. So all of the published card speeds >are unachievable in the camera. That's why the Rob Galbraith >in-camera card tests are so important.