[pure-silver] Re: Zone Data Project
- From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 22 Sep 2006 14:58:25 -0400
The problem with such data collections is that while people may make
their own tests and have confidence in their data, the data in each case
was not obtained under controlled conditions. Each person will have
their own perferences, equipment, darkroom methods, and requirements.
This all determines what they consider to be normal. If you look at
existing data there is often only the roughest correlation between the
various entries.
Jerry
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Bob Adler
Sent: Friday, September 22, 2006 2:01 PM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Zone Data Project
I was wondering if folks on this list would be interested in
compiling a spreadsheet for everyone to share that provided information
on film, N(x) ASA, developer, development time, etc.. I would be willing
to park this spreadsheet on my web host for anyone to download and would
keep it current. And of course this is a purely selfish endeavor as I
would love to have the data available for my own use.
I understand that to be right on the money with use of the zone
system, each emulsion batch should be tested and that there is a lot of
judgement in arriving at the correct ASA and development time.
Additionally consistent development procedures are very important and
some emulsion/developers require very specific and refined technique and
measurement to obtain the best result. That being said, for those of us
who can live with the 90 percent rule (obtain 90 percent of the benefit
of the zone system with 10 percent of the work), this would be a great
source.
If enough folks think this would be a worthwhile project, I
would be happy to manage it. The best way for me to guage interest would
be to categorize listers into 2 categories; those who would be
interested and have data they can contribute, and those, like myself,
who would love to have the data.
So, if you are interested, send me an email reply at :
rgacpa@xxxxxxxxxxx
and indicate whether or not you can contribute data, I'll
compile the results. I'll report back only if there seem to be enough
interested folks and enough contributors.
Thanks,
Bob
Bob Adler
Palo Alto, CA
http://www.raflexions.com
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