>Stan, >Why is the Live View histogram a better alternative, does it >work in a different way? What is the purpose of the other >meter in live view if it is not accurate? >Dave Jolley
For Stills, Live View. The LCD screen doesn't preview exposure if the camera is in P, A or S modes UNTIL you activate the Metering Bar. See Exposure Preview, pg 46 of the Manual. If you have Thom Hogan's D800/E Guide, Pg 479.
Activating the metering bar with the OK button enables the LCD screen to emulate exposure in P, A or S modes. Pg 46 list several factors that may cause the preview to be different than the result, including Flash Lighting, Active-D Lighting, and others. These settings would be a place to look for differences in LCD preview to results, or eventually LV to VF. There is also the caveat that Thom mentions, the LCD is not 'finely calibrated'.
The live histogram is a fine tool also as Gary mentioned. Lots of tools available on the D800/E.