>You are correct but for some reason it is one of the settings >that can cause the frame rate to slow below the maximum. >Active D-Lighting has the same affect. > >Now, I haven’t tested this with my D800 but I have on earlier >Nikon bodies.
I'm travelling for a week so I cannot either. I know High ISO noise reduction is reported to slow things down, I had never heard that for low.
Speaking of older bodies, the D300 had an oddity as well, it's dark exposure was not the same length as the light, so you might do a 20 second exposure, and the NR job ran for maybe 10 (I made that up -- but shorter; strange; when I tried the D800 it was the same length).
And Auto-ISO is suppose to potentially affect frame rate, though I've never understood why, as it is supposed to shoot at full speed with auto-exposure, and that to me are auto-exposure also.