With Panasonic m4/3s, I thought the metering modes meant what their names say and what the manual says: "center-weighted" will have bias for the center and the "multiple" will evaluate the overall exposure. So I thought it was similar to Nikons. With Nikon, "center-weighted" has bias for the dead center of the frame, while "matrix" is more evaluative of the whole scene, with bias for the ACTIVE focus. Surprise, surprise... Panasonic's "center-weighted" actually has bias for the ACTIVE focus point, not the dead-center! I've done numerous experiments and it was evident. I think Nikon has nothing comparable to Panasonic's "multiple". I think Panasonic should change the nomenclature in metering. "Center-weighted" should be called "Active focus-weighted". It's so much better than inflexible "dead center-weighted" anyway, and they should let people know. Less and less reason to utilize the old "focus-and-recompose" technique.