[rollei_list] Re: [rolleiusers] Tri-X developer
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Fri, 23 May 2008 13:22:18 -0700
----- Original Message -----
From: "Thor Legvold" <tlegvold@xxxxxxx>
To: <rolleiusers@xxxxxxxxxxxxxxx>;
<rollei_list@xxxxxxxxxxxxx>
Sent: Friday, May 23, 2008 1:07 PM
Subject: [rollei_list] Re: [rolleiusers] Tri-X developer
Thanks Jeff.
Rodinal generally produces somewhat coarser grain than
other developers but in my experience its not much greater
than T-Max RS. The "sharpness" meaning acutance of Rodinal
depends on its dilution. At 1:25 it does not have much
acutance effect but at 1:100 the effect is quite strong. It
is never a mushy developer.
Rodinal is also somewhat opposite of many other
developers. Generally developers with a considerable sulfite
content, like D-76, produce somewhat coarser grain when
diluted, Rodinal grain becomes somewhat finer when diluted.
Tri-X 400 is a general purpose film with a medium toe,
Tri-X 320 is a very long toe film intended for studio use.
Compared on the same subject and with the same highlight and
shadow points chosen for printing the 320 version will
produce somewhat darker mid grays and somewhat higher
contrast highlights. The 320 film is useful when you want
brilliant highlights and rather low contrast shadows. The
400 film is better for all around use. See the data sheets
for the characteristic curves which will make this plain.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
---
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