[pure-silver] Paper developer: Dektol vs D-72 vs E-72
- From: Claudio Bonavolta <claudio@xxxxxxxxxxxx>
- To: Pure-Silver <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 18 May 2010 17:55:03 +0200
It's quite a long time I'm thinking to find a more environmentally-friendly
developer, say a phenidone/ascorbic acid based one.
Having finished my last bottle of Agfa Neutol, a Dektol-like developer, last
week-end I decided to do some tests and compared the original Dektol to its
published D-72 formula and a formula I found on Anchell's book, the E-72.
I took two negs, one with lots of delicate highlights (snowy mountains with
trees in the foreground) and a second with more dark areas (a studio portrait
of my daughter), exposed them three times on Ilford Multigrade RC and develop
in those three developers in same conditions (temp and time).
The results impressed me because all three prints were nearly indistinguishable
(contrast, densities, image tone) put side by side.
I was expecting this between Dektol and D-72 but not with E-72.
I've yet to test it on fiber paper but this is very encouraging ...
Do some of you already used this formula, maybe on different papers, and what
are your results ?
Chris Patton's E-72 Formula
Water (125°F/52°C) 750ml
Phenidone 0.3g
Sodium sulfite (anhy) 45g
Ascorbic Acid 19g
Sodium carbonate (mono) 90g (or 77 g anhydrous)
Potassium bromide 1.9g
Water to make 1000ml
Dilute between 1:1 and 1:4, with 1:3 for normal contrast.
Cheers,
Claudio Bonavolta
http://www.bonavolta.ch
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