Archived posting to the Leica Users Group, 2002/01/23

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Subject: [Leica] T-Max films
From: John Hicks <jhicks31@bellsouth.net>
Date: Wed, 23 Jan 2002 22:20:24 -0500
References: <5.1.0.14.0.20020123165634.02642f40@pop.andara.com>

At 04:45 PM 1/23/02 -0500, you wrote:
>I love your PAW. The film works for you.
>
>A few odd things happened when processing TMY. My temperate was right on, I
>used my calibrated digital thermometer. Time and agitation -- maybe room for
>improvement.

  T-Max films like _vigorous_ agitation, none of that gentle
think-about-waving-it-around stuff. That doesn't mean more time, but more
action during the agitation period.

> My first two rolls came out of the fixer not fully fixed, but
>cleared up when placed in a dish of fixer. The fixer was fresh, and every
>other film I've used with that brand of fixer fixed in the normal 2-4 mins.

  T-grain type films (TMX, Delta, Acros) need longer fix times than
conventional films; four to six minutes (depending on temperature) in fresh
rapid fix with continuous agitation is fine. Also you'll need to use an HCA
to remove any leftover magenta color.

>All of the rolls I've developed have had poor shadow detail.

  Poor shadow detail is caused by underexposure of the film for the
developer used. For example, an ISO 400 film may need as low as EI 160 in
Microdol-X/Perceptol and as high as EI 640 in Microphen/DD-X. No matter
what the ISO rating is, you'll need to test to see what the real speed is
with your equipment and your developer.

John Hicks
jhicks31@bellsouth.net

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In reply to: Message from "Robert G. Stevens" <robsteve@hfx.andara.com> (Re: [Leica] Re: Acupan 200)