Digitizer, as luck would have it, I do have a spare Besseler 23C XL 
, which I just posted. Thanks for the reminder. I use one as my main scanning rig for critical items.
I am not yet sure about adding another to my space yet nor modifying the one I use again before I really grasp the ease, and end value of, the process described.
It sounds like I should try a green filter, and if I can, a green light. I am not quite ready to go over to buying a monochrome camera but I imagine that would be most phenomenal with this process, based on my primitive understand thus far.
But wow! is this all very interesting, because my main goal is creating great copies to print, not just show digitally. Darkroom access and large prints are challenging these days afterall… and costly. And as always with me, I am scanning for a large project much more than I am scanning for myself.