From: Brian Ellis (bellis60@earthlink.net)
Date: 03/01/01-09:16:50 AM Z
I recently inadvertantly reversed the times suggested by Gordon Hutchings
for T Max 100 and HP5+ normal development in PMK and both sets of negatives
came out fine. There's only a difference of a minute (less than 10% of the
total) in the two recommended times. This was in trays, not the tubes I'm
now using (thanks Sandy). With the three films I've now tried in PMK (the
prevous two plus FP4+) , the times suggested in the book for normal
development of all three have been very accurate for me.
----- Original Message -----
From: "Carl Weese" <cweese@earthlink.net>
To: <alt-photo-process-l@skyway.usask.ca>
Sent: Thursday, March 01, 2001 7:10 AM
Subject: Re: Pyrocat Development Information
> Sandy,
>
> A quick caution on the TXT times. Gordon Hutchings also in his PMK book
> shows TXT requiring longer development than HP5-Plus, but I have never
> encountered this, with any developer, any agitation technique, or any
> desired final contrast range. I always find HP5 to require anywhere from
25%
> to 75% longer development than TXT to achieve similar contrast. Perhaps
TXT
> has a sluggish response to pyrocat, but the outdated material may have
> skewed this particular result.
>
> But it's great to have the starting test times for all these combinations,
> thanks for posting them.---Carl
> --
>
> ----------
> >From: Sandy King <sanking@hubcap.clemson.edu>
>
> > 2. For combo printing with silver + pt/pd -- Use a 2:2:100 dilution and
> > develop for the following times for a DR of approximately 1.4, when
> > subject luminance range is about 7.
> > BPF 7 minutes at 72F
> > HP5+ 9 minutes at 72F
> > TXT 10 minutes at 72F
> > FP4+ 6 minutes at 72F
> >
> > 3. For alternative printing only for a DR of approximately 1.6, use the
> > 2:2:100 dilution and develop as follows.
> >
> > BPF 11 minutes at 72F
> > HP5+ 13 minutes at 72F
> > TXT 20 minutes at 72F
> > FP4+ 10 minutes at 72F
> >
> > Development based on rotary processing in tubes with continuous
agitation.
> > Times are only guides. TXT times in particular may be suspect because
the
> > film tested was outdated, though still with a very low B+F.
> >
> > Sandy King
> >
> >
> >
> >
>
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