[pure-silver] Re: Paper developer: Dektol vs D-72 vs E-72
- From: "Ralph W. Lambrecht" <info@xxxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 18 May 2010 18:56:24 +0200
I use D-72 and ID-78.
Regards
Ralph W. Lambrecht
http://www.darkroomagic.com
http://www.waybeyondmonochrome.com
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On May 18, 2010, at 17:55, Claudio Bonavolta wrote:
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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