This evening I ran a roll of TX through Ilford's ID-11, and
another roll through Kodak's venerable D-76, gently rolling the
tanks while enjoying Heifitz playing the music of Saint-Saëns
and sipping a warming cup of Casablanca blend tea from Mariage
Frères.
Tonight's exploration into the qualities of Tri-X and ID-11
centered around Anchell's comments that, since ID-11 and D-76
are, for all intents and purposes, identical formulations,
development times for each developer should be the same. Of
course, the formulation and packaging of the two developers are
not precisely identical, and, therefore, using the time-temp
chart from one or the other developer may not give identical
results. This is what I wanted to determine.
The last couple of rolls of TX that I souped in ID-11 seemed to
indicate that Anchell was wrong in his assertion. The contrast
range of the negatives seemed a little greater than what I'd
been getting when using D-76. Today I shot a few frames of the
same subject on two rolls of film, using the same camera and
lens to minimize any exposure differences caused by equipment,
in order to more directly compare the results of TX in each
developer.
Each roll was processed separately in 600cc of developer mixed
1:1, using, of course, the same time, temperature, and agitation
routine for each roll. As suspected, the results showed that
ID-11 produced a negative with somewhat greater highlight
density than the negs produced using D-76. The difference was
observed by viewing the negatives side-by-side through a 5.5X
Pentax loupe on a light box with a 5000-degree K light. The
subjects were a B&W teddy bear, the exposure of which was
determined by measuring a Kodak grey card, and the grey card,
which was also included in the scene.
So, for accurate and precise results, run your own tests and
don't consider ID-11 and D-76 to be interchangeable.
--
Shel Belinkoff
mailto:[EMAIL PROTECTED]
There are no rules for good photographs,
there are only good photographs.
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