I am having an issue with using an external monitor in FCP. I have a 17" MBP I am running FCP 6 on. I connected a 32" LCD TV. I went through the expert color calibration mode in system settings. The monitor looked great.
The problem is in FCP when I turn on the external monitor the picture comes out very dark. I assume the gama levels are being messed with. When I export the movie and play it on the same monitor it is much brighter.
Here is a 3 screen shot composite of my external monitor. The FCP is on the left, the QT movie is on the right, and the canvas window from FCP in the middle for reference.