Darkness levels difference shooting P2

[JD Marlow]

I recently shot some footage, overcranking at 60fps at 720 24pN in a pretty low light situation. My scene files settings had the Chroma level up a bit, and the Master Pedestal down pretty far, but I was opened wide up and (according to the LCD) getting a bright enough image to work with.

 

I bring the P2 footage into Final Cut Pro today and see that the footage is TOTALLY dark. There's no detail where there was detail before, and the overall images are about 2 x darker than what I saw on my LCD screen.

 

My LCD screen levels for brightness and contrast remain unchanged and at middle levels. What am I doing wrong here? Why is there such a enormous difference between what my LCD sees and what is actually on the P2 media? Is this just because I was overcranking at 60fps perhaps?