>Darrel Young's D800 book says on page 309 ""If >you select "On", your camera will automatically >spring forward or fall back." The Nikon manual says the >same thing.
And they're both accurate. Problem, to you and me and most other people, automatic tends to mean that one doesn't have to manual throw the swith. Unfortunately, in this case, "automatically" means that throwing the switch on will advance the camera's time setting one hour at the moment you throw the switch. The time will automatically fall back one hour at the moment you turn off the switch. It's counterintuitive, no doubt, especially since the hour wheel is right there are can be advanced or turned back just as easily.
The DST feature is brought to you by Nikon's Department of Redundancy Department. FWIW, every other current Nikon body, and every Canon and Fujifulm body I've checked work exactly the same way.
What I have not checked is whether a Nikon body connected by USB cable to ViewNX2 will do an automatic DST update via the computer's Internet connection. So I think I'll check that right now.
In the file transfer dialog in ViewNX2, there's a a checkbox to "Synchronize camera date and time to computer when camera is connected (supported cameras only)." But the feature is poorly designed, because when I clicked (helpfully provided) the "Synchronize Now" button in the dialog, the time updated but did not turn off DST. So I then turned off DST in the D800 menu and of course the time fell back one hour, which means the camera was one hour behind.
It's an unimpressive feature in the camera, and it's a remarkably dumb feature in Nikon Transfer 2.