I apologize for that posting, I was in a hurry this morning and missed the subtleties. I should learn to refrain from posting when I'm in a hurry .
Nothing in my comments had anything to do with the histogram or black levels. Check the posting times, I never saw your earlier post about clipped levels, I was just adding to what Dwight said earlier about Mallincam amp glow .
It is however pretty interesting to see a histogram like that. It's certainly not representative of the raw un processed image from any video camera through a frame grabber.
What I meant was exactly what you said, the way that histogram looks is certainly suggesting some device in the signal chain clipped the blacks, be it the camera hardware, frame grabber hardware or software , or the Miloslick settings, and I was/am very curious as to what caused it. I am in the process of educating myself as much as possible before making some possible purchasing decisions and trying to find out how the various parts perform is a given for me.