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

Re: CORRECTION: Re: my pigment dilutions

Thanks Christina, for that.

By the way, my bathroom is very similar to yours most of the time. I get lots of flak for it too! Are you at all concerned about chrome contamination? My wife is. She seems to think that we'll all die horribly if I persist.


David H

On Oct 26 2008, Christina Z. Anderson wrote:


I went back and redid my math and I was a tad off, and then decided to make
the math easier to understand, plus uploaded another 3 colors. So now it
says the amount of TOTAL volume that the tube of 15ml pigment is in.

To put my money where my mouth is, I then went ahead and mixed up those
stock mixes (the stronger one--the weaker ones on the left are essentially
cut in half) to make sure I was accurate and I am. So there you have it.
But of course, NOTHING is simple in my household--I ran out of gum so had to
mix up another batch, ran out of pigment and had to get some more, blah blah
blah so it was a sacrificial day to the gum universe. Just to do these two
STINKIN' visuals.

David, the swatches further down the page are just comparing stock solutions
of one 15ml tube in a total volume of 60ml gum--very strong and that
strength only used with an occasional yellow and raw sienna. I make a gum
curve for the three colors, but when I make a softer colored print I just
use the same negs, so I am not too perfect about it.

Christina Z. Anderson
----- Original Message -----
From: "Christina Z. Anderson"
To: "Alt List"
Sent: Saturday, October 25, 2008 11:08 AM
Subject: my pigment dilutions

> Dear All,
> At this URL I posted a visual of my pigment dilutions:
> http://christinaanderson.visualserver.com/Text_page.cfm?pID=2076
> 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.
> Chris
> __________________
> Christina Z. Anderson
> http://christinaZanderson.com/
> __________________