bkev said:

Filtering out the rainbowing was definitely a good choice; it's one of my bigger problems with the Technidisc.

Yeah, I agree, it's very ugly but I ultimately decided to left it in, as the side effects of such filtering are often worse than the original problem. It's no match to get rid of, but what you often end up with is smearing, ghosting, objects that should have colors gets desaturated - seen on lights and lasers etc. I have not yet found a good derainbowing filter that not introduce artifacts of some sort. Fast moving scenes are the toughest.