Archived posting to the Leica Users Group, 2000/05/07

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Subject: Re: [Leica] (Xtol) Why 1+3 dilution ?
From: Johnny Deadman <>
Date: Sun, 07 May 2000 10:03:51 +0100

on 6/5/00 10:43 PM, Jean-Claude Berger at wrote:

> Julian Thomas wrote:
>> According to the *.PDF download from the Kodak site 1:1 'will provide
>> slightly greater film speed, enhanced sharpness and shadow detail, and
>> slightly more grain'. 1:3 'will generally provide less film speed shadow
>> details, with slightly enhanced sharpness and slightly more grain.' (p2)
> Hi Julian,
> Is the 1+3 "more grain" is more "more grain" than the 1+1 Xtol or the
> opposite?

With sulfite developers like xtol (+ d76 and d23 and many more), more
dilution = lower concentration of sulfite = more grain

- --
Johnny Deadman