Hi David,

Although I am not using the prores codec, I use colour management all the time to correct YUV to RGB levels.

I notice you said you were interpreting footage as HDTV (Rec. 709). I think that may be your problem.

I set the project working colour space to be HDTV (Rec.709) but I interpret the footage as SDTV PAL 16-235 or HDTV (Rec. 709) 16-235. The 16-235 part corrects the luminance level issues and my final output is always correct for Final Cut and also Avid.

Hope this is helpful

Nic