Re: [Leica] All hail Tri-X (or is it still top dog?)

["Mike Durling" <durling@widomaker.com>]

Yes I do change times for temperature.  For Tri-x I have been using the
time-temperature chart in Kodak's Xtol PDF file.  Its just that sometimes I
work at 70 and sometimes at 72 or 75.

I presented that as a possible variation, but upon closer inspection I don't
think that's the reason grains seems larger at times.  I'm seeing
differences even between frames on the same roll.  There is a psychological
effect, sharper images seem less grainy, but that is not the whole story.  I
suspect part of the effect may be different VC contrast filtration in
printing; I'll have to keep better records.  Overall negative density seems
to matter too.  The grainier ones may be somewhat overexposed, but still
perfectly printable.  I guess some tests are in order.

Mike D

- -----Original Message-----
From: Harrison Mcclary <hmcclary@earthlink.net>
To: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us>
Date: Friday, December 31, 1999 2:17 PM
Subject: Re: [Leica] All hail Tri-X (or is it still top dog?)


>Mike,
>
>Ae you changing your development time to allow for the temp differences?
> If not then you are not keeping the same development...if temps lower
>you are underdeveloping, if temps higher you are over developing. This
>will cause varriances in your grain.
>
>Personally I like using UFG at 65 degrees for 4.75 minutes on Tri-x.
>Gives good tones and great grain on Tri-X.
>
>Mike Durling wrote:
>> Development is always more or less the same, Xtol 1:1.
>> I usually develop at the ambient room temperature and maintain the same
temp
>> through all solutions including the wash.  So starting temperature may
also
>> be the variable.
>>
>> Mike D
>