Kevin O'Brien (kob@paradise.net.nz)
Mon, 22 Feb 1999 13:54:51 +1300
Hi Sil,
Thanks for the correction. The brain was getting a little tired: Rodinal is
still available under that name and is commended to those who haven't tried
it as a film developer.
My comments about grain apply to the regular emulsions; the T grain ones may
not.
Kevin O'Brien
-----Original Message-----
From: Sil Horwitz <silh@iag.net>
To: alt-photo-process-l@skyway.usask.ca
Date: Monday, 22 February 1999 13:17
Subject: Re: Agfa Scala/Kodak T-Max Reversal
>At 99/02/21 09:08 PM +1300, Kevin wrote: (very small portion shown)
>
>>Another bonus- the reversal process gives finer grain from a given film
>>because of the solvent added to the first developer.
>
>Normally, reversal gives finer "grain" because the larger grains are the
most
>sensitive and are exposed first. What are left are the less sensitive ones.
>This does not ordinarily apply to special structure crystals such as those
used
>in T-Grain emulsions.
>
>> Rodinal (paraphenyldiamine)
>
>Rodinal is paramidophenol in an alkaline solute. Paraphenylenediamine would
>never work in this environment.
>
>Otherwise, the description seems quite thorough and interesting.
>
>Sil Horwitz, FPSA
>Technical Editor, PSA Journal
>silh@iag.net
>Visit http://www.psa-photo.org/
>Personal page: http://www.iag.net/~silh/
>
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