|This shot taken yesterday was "over" by 2 stops.|
First, for those that are not familiar; according to Wikipedia...
"In photography, the metering mode refers to the way in which a camera determines the exposure. Cameras generally allow the user to select between spot, center-weighted average, or multi-zone metering modes.
Various metering modes are provided to allow the user to select the most appropriate one for use in a variety of lighting conditions."