Archived posting to the Leica Users Group, 2002/01/21

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Subject: Re: [Leica] Fuji Neopan 1600
From: "Don Dory" <>
Date: Mon, 21 Jan 2002 23:54:28 -0500
References: <006f01c1a2d8$3acaf620$e6697ad5@7g2070j>

Two bath developers work by placing all the active ingredient in the first
bath where you load up the emulsion with developer.  The second bath
contains the elements needed to activate the developer.  You can not
overdevelop as you can't add more agent.  Difficulties today include the
fact that new films have less emulsion to load so the newer films tend to
respond differently.

I am always amazed at people suggesting a new "miracle" developer.  Two bath
developers have been around just about forever and they do solve problems
with temperature(using developers where you can not get lower than 80F).
Some people like the lower contrast.  But usually you will get more
consistent results by choosing a few films and a developer and really
understanding how it works.  Even the large format folks don't usually get
into split development when they want to reduce contrast in a scene.
However, by all means give it a try, when we stop trying new things then it
is off to the home for us.

Flat response means that it has a very linear characteristic curve.  This
could have something to do with others comments about the midtones.
Traditional films like Tri-X have an implied mid-tone hump as the highlights
don't respond lineally: more exposure doesn't lead to the same amount of

Don Dory

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In reply to: Message from "Gareth Jolly" <> ([Leica] Fuji Neopan 1600)