[pure-silver] Re: Grain Size

Richard Knoppow a écrit :


----- Original Message ----- From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, October 27, 2006 2:40 PM
Subject: [pure-silver] Re: Grain Size


The was an article in Photo Techniques by the inventors of Xtol where
they state that Xtol produces finer grain and more film speed than D-76.
The differences are small but consistent and measureable.

Jerry

I did not mean that the results were the same only that Xtol and D-76 have a family resemblance. Xtol delivers about maximum film speed, maybe 3/4 stop above D-76 and somewhat finer grain. If it was more reliable it woud be about the optimum developer for a great many films.
Microdol-X and Perceptol do yield a little finer grain than Xtol but at the cost of more than a stop loss of speed.
Actually, I have a 5 liter bag of Xtol on the shelf and should mix it and try it again.

---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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If you try that bag of Xtol, please try to mix it with demineralized or distilled water and the "multiple glass bottles completely filled" method I already mentioned. I'm pretty sure that will solve your problem.
And keep some bottles for shelf-life tests, we may start a contest :-)

--

Claudio Bonavolta
http://www.bonavolta.ch

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