[pure-silver] Re: Ansco 115 Contrast Boost
- From: John Meyers <jmeyers102@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Wed, 25 Jan 2006 10:09:22 -0800 (PST)
--- Lloyd Erlick <lloyd@xxxxxxxxxxxx> wrote:
Thanks Lloyd, and Richard, for your posts in response
to my questions. Lloyd, I had thought that your
earlier post regarding the potassium salts was
recommending some specific substitutions in the Ansco
120 formula. As you state here, it was a more general
statement about substituting for the respective sodium
slats, which is what I would have suspected, and where
I got confused. I plan do a bit of experimentation
with it I think.
John Meyers
>
> January 25, 2006, from Lloyd Erlick,
>
> I'm suggesting potassium salts for their
> *respective* sodium salts. So if
> the formula specifies sodium hydroxide, I'd use
> potassium hydroxide. If it
> says sodium carbonate, I use potassium carbonate.
> The 120 formula specifies
> sodium sulfite, so I use potassium sulfite. (By the
> way, I don't use the
> Ansco 115 formula, so I'm not really talking about
> it or any formula
> specifically. Just about substituting for a subtle
> added warmth from a
> developer.)
>
> In the 120 developer formula, I use quite a bit more
> potassium bromide than
> called for. It really boils down to one's taste, the
> type of paper, and the
> condition of the paper. In a working solution of two
> liters of Ansco 120
> paper developer, I use six to eight grams of
> potassium bromide.
>
> Getting the warmth of tone one wants from a paper
> involves a lot more than
> one factor. Developer is critical but far from the
> only factor. There is an
> intimate relationship between the developer and the
> selenium toner.
>
> regards,
> --le
> ________________________________
> Lloyd Erlick Portraits, Toronto.
> voice: 416-686-0326
> email: portrait@xxxxxxxxxxxx
> net: www.heylloyd.com
> ________________________________
> --
>
>
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