Ethulin, that is exactly the kind of picture we got this morning after completing the build of our target light. This is with a brand new 2007 camera.
The target showed up as 240,240,240. So did the non-reflective calendar on the wall. So did the flourescent lights in the next room. We tried using the adjustments mentioned in the LabView manual but those did not help at all. We also tried adjusting several different values in LabView with no luck. I had to leave before we could spend more time on it.
I have searched several threads and have not found any actual working values posted.
EDIT: I just noticed that
Kevin Watson's page contains a workbook with complete calibration procedures. Looks like I need to do some reading.