[pure-silver] Re: Is someone making the equivalent of Techpan?
- From: "Edward C. Zimmermann" <edz@xxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Mon, 28 Nov 2005 16:31:42 +0100
Quoting "Koch, Gerald" <gkoch02@xxxxxxxxxx>:
> Technical Pan is a odd film being neither an ordinary pictorial film nor
> a microfilm. It had good latitude and tameable contrast. Unless some
> manufacturer makes a concious effort to make something similar there is
> really no replacement.
Agfa Copex Rapid AHU + SPUR Nanospeed is superior (from a sharpeness and
tonality standpoint) to Technical Pan + SPUR Dokuspeed. SPUR Dokuspeed was
the best developer I've yet seen for pictorial applications of Technical
Pan-- much better control than POTA, Technidol etc.
Technical Pan had very fine grain but not just not as sharp as Copex.
>
> My results with microfilm have always been disappointments. None of the
> published formulas IMHO really do an acceptable job in taming the
> contrast and exposure latitude is zilch.
They are tricky. SPUR with Nanospeed (Copex Rapid AHU), Dokuspeed (TechnicalPan)
and Imagespeed (Imagelink HQ) demonstrate that its possible to do an
acceptable job.
Among the "public" formulas H&W control is probably the best. Its
main problems, however, are 1) lowish speed 2) dichroic fog
--
--
Edward C. Zimmermann, Basis Systeme netzwerk, Munich
Office Leo (R&D):
Leopoldstrasse 53-55, D-80802 Munich,
Federal Republic of Germany
http://www.nonmonotonic.net
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