U of S | Mailing List Archive | alt-photo-process-l | Re: my pigment dilutions

Re: my pigment dilutions

Hi Christina,

Excellent visual. Thank you very much. It's interesting to compare those swatches to those lower down the page at full strength (I assume). A further assumption I make is that you use a different set of curves for each dilution?


David H

On Oct 25 2008, Christina Z. Anderson wrote:

Dear All,
At this URL I posted a visual of my pigment dilutions:


CAVEAT: I am NOT telling anyone how to do their coatings, and the image may
be totally meaningless to you, but it is what I do. Private practice one
might say!

The amounts look really odd, but to explain them, I have all my stock
pigments mixed in 60ml nalgene bottles, one 15ml tube to a TOTAL volume of
60 ml. At time of use I dilute that stock different amounts depending on
the effect I want. Loris prompted me to be more exact at what I actually
do, so I went in the dimroom and did all my measuring and calculating and
found that I usually mix my stock mix of yellow 1+1 gum at time of use, my
stock mix of magenta and thalo pretty equal at 1+5 at time of use, or else a
straight yellow stock solution, combined with magenta stock + plain gum at
1+2 and thalo stock + plain gum at 1+2. But at the bottom of the picture of
my test strips I figured out the actual amount of tube pigment in the final
amount of gum so it looks more understandable. At the top I have a mixture
of drops of my stock mixes showing a neutral grey that they make.

So thanks, Loris, for keeping on asking these questions so I could finally
be less "kitchen cooking" and more exacting about it. See, a lot of times I
use a scant tsp of this and an overflowing tsp of that when I am making my
coating solutions.

Speaking of Visual Server, this is why I love the site, too, because I can
easily plop these images in whenever I get the urge.

Christina Z. Anderson