[pure-silver] Re: Advice on first steps to making own fine grain compensating developer

On Sat, 12 Mar 2005, Christopher Woodhouse wrote:

> I have a general idea of the characteristics of different agents and
> additives as well as the need of commercial companies to add further
> ingredients to make their formula keep, transport and mix effectively. It=
 is
> a whole new world so I need to start with some sensible, practical
> recommendations in the first place.
>
> Specifically, I'm interested in other's comments on D-23 and how it diffe=
rs
> to Perceptol and possibly Microdol-X in both makeup and performance with
> films such as TriX 320 and Neopan 400.

I tried D-23 extensively, especially with 100 ASA films. I found that it
is a fine grain developer with average sharpness and some loss of speed.

After Ryuji published his DS-10 formula, I tried it and found it plain
better than D-23 with suitable films (I had good results with the Deltas,
T-Max, Acros and 400TX and not-so-good results with APX and Lucky films).
DS-10 1+1 is my standard developer for my standard films, Delta 400 and
100, I use if for about 90% of my work.

OTOH, I love APX100. So I looked for a fine grain formula for it and tried
a Microdol/Perceptol lookalike from the net (or Anchell-Troop?).

5g Metol
100g Sodiumsulfite
33g NaCl (iodide free, not plain table salt!)
1g Boric acid
dist. water to 1l solution

My results (used 1+3 with APX100) are very good, I rate it at 40 ASA and
got extremely fine grained and sharp results. My dev time is 11:00 at
24deg in a ATL3 (75 RPM).


Gr=FC=DFe aus Hohenlohe,

=09Martin Jangowski

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