Originally Posted by KenRockwell.com
I leave most settings at their defaults.
I reset everything every time I use my camera, much as a pilot uses a checklist before flight to prevent any switches from being in the wrong position. When I don't check first, I often have left my D200 in some screwy mode from shooting in the dark the night before.
Nikon has an easy reset feature. I use it every time! My standard operating setting only is one click different than the defaults, and that's only because I use one trick I'll explain in the menus to improve image file size.
RESET: Find the * QUAL and +/- * buttons on the top of the camera. Hold them both down for a few seconds. The top LCD blinks and everything is back to normal.
I do this every time I use my D200. If I forget, I may have the resolution or White Balance or ISO or God knows what set to something screwy and spoil all my shots. I'll see WB problems on the LCD, but I won't notice if I left my D200 at ISO 1,600 from the night before. That's why I always use reset.
Reset leaves the detailed menu tweaks alone and is smart enough to reset only the big dumb things I might have moved overnight.