Digital BW, The Print

> >
> >  Have you tried a dark cyan overcoat?
> >

> I will try that. But an overcoat of cyan pigment on a black pigment
> layer isn't producing a black dye layer though.

True, it's not a dye.  But if it is truly transparent, then it relies on the
reflectance of the  underlying substrate -- usually paper.  Here, however,
that substrate is carbon.  So, its absorbency, the way a subtractive,
transparent color works, takes out only certain colors of the underlying,
reflective substrate.  Carbon is warm, so the cyan is absorbing the reds of
that warmth.  The cyan part of the carbon reflection will come right back
through, but there isn't much of that. 

I guess the question is, in part, how transparent the cyan really is.



> One of my concerns with colored overcoatings is that they may increase
> metamerism.

What I saw was so dark if there is some it's not of much consequence. 

Only one way to see.

Paul
www.PaulRoark.com