Re: Stock paint: gum solutions

[Katharine Thayer <kthayer@pacifier.com>]

Loris, quick clarification on my way out the door.  I was replying in  
general to several comments in the thread at once without specifying  
who I was responding to.  I can understand that you may have thought  
I was talking to you throughout, since the post was addressed to you,  
but that wasn't always the case.  Specific clarifications below:

On Oct 22, 2008, at 9:25 PM, Katharine Thayer wrote:
> While I would agree with the ranking of amounts for these three  
> pigments (most for PY151, middling for PV19, and least for thalo)  
> you would never find me making general statements about relative  
> amounts of "yellow" "magenta" and "cyan" because pigment strengths  
> don't cluster in hue ranges that way, in other words yellow  
> pigments aren't generally weaker than magenta pigments aren't  
> generally weaker than cyan pigments; they vary all over the place.   
> For different pigment combinations, it could go in  different orders.
Here my comment wasn't intended for you, but for someone else in the  
thread who made a general statement about relative amounts of pigment  
for "yellow" "magenta" and "cyan."  I'm sure you wouldn't make this  
mistake, and I apologize for the confusion.


> I don't find it necessary to print more than three layers to  
> achieve a full tonal scale in tricolor, but I also think that  
> printing with more layers of a lighter pigment mix gives a lovely  
> delicate effect, so it really depends on the image and what you  
> want to do with it.
Here I was responding to Marek's comment about pigment concentration  
and tonal scale, with which I agree in part (too much pigment can  
make it difficult to a full tonal scale) and disagree in part (I  
don't find it necessary to print more than three layers to achieve a  
full tonal scale, but it does really depend on the image and what you  
want to do with it.  Hope that's all clearer,

Gotta go,
Katharine