> >>That is why these cameras have buffer. > >Not entirely. The D800 buffer design seems to work best with >class 10 cards. I haven't tried mixing card classes - e.g., >class 10 in one slot, class 6 in the other.
You can't mix it. Only one SD card slot.
Perhaps the >problem you're experiencing is related to that - an empty slot >misread by the camera? That would definitely be a bug.
Mine only happens if SD slot is filled with SD card. I have not noticed this happening before I inserted the card.
It's >almost as if the camera gets periodically confused by the >state of the unused slot and then slows down. > >>Class 10 only means that card is capable of a minimum >10mb/sec >>writing speed. But each manufacturer might be rating >their >>cards on top of this CLASS rating. > >That's exactly what they're doing. The theoretical SD cardbus >max is 310 MB/s, and once UHS-1 standards are settled we'll >start seeing some really fast cards and camera slots that can >handle the data. It's probably a D800 bug, and I hate to bring >it up, but the issue of fake Sandisk and fake Lexar CF and SD >cards has been raised in other threads over the past couple of >years. But if you're sure your main card is genuine, a slow or >poorly chipped fake isn't the problem.
I have fast Sandisk, Topram, Trenscend cards for CF. All of these create the same problem.
> >>BTW, one of the posters here has 90mb/sec CF and 95mb/sec >SD >>with the same exact problem. > >Problems occur, no doubt. Process of elimination should >include confirming a genuine card as well as the rated write >speed I think.
Take a look, more and more posters reporting the same problem. One poster even said that there is nothing is SD slot and he still noticed the problem. I doubt very much that it has anything to do with the fake cards. > >>So it is obvious to me that there is some kind of the bug. >My >>camera is one of the first ones and it was purchased in >April >>of last year. > >Before sending the camera to Nikon for testing, maybe consider >taking the camera back to your dealer (or the nearest dealer) >and trying a couple of identical class 10/speed cards - CF and >SD. Shoot in store for as long as it takes to either reproduce >the problem or at produce some evidence that filling both >slots with the same class/speed cards may eliminate the >problem.
Don't need to. One poster here already reported what you suggested.
Hopefully Nikon will fix it in the next firmware update.