I am looking for help, trying to determine whether I have an exposure problem with my D2X. I took the photo of a kodak grey card and another calibration card from photobox. I also have the companion TIF file for the photobox calibration image. The areas the arrows point to are supposed to be 128, 128, 128 RGB. I did a WB preset and I spot metered on the grey card, shooting in JPG fine. In the sun, metering off the grey card matched the incident reading from my sekonic light meter. In the shade the sekonic was metering one stop slower than the D2X spot meter. I had to add +.67 EV to get an RGB of 114, 117, 124. At +1 EV the RGB was 133, 133, 141. The blue value was consistently high even with the WB preset, both in the shade and sun. I have also read that the nikon metering is calibrated to a 12/13% grey, not the 18% kodak - is this true? Any suggestions? How do you test your cameras?