On Ven, 9 gen 1998 19:48, Lars Bergquist <mailto:timberwolf@xxxxxxxxxx>
wrote:
>First, I tried the classical method, more exposure and less development,
>the technique which in the 'thirties led to modern compensating
developers.
>Fine, but development times became too short to be controlled. So I
diluted
>the working solution 1 + 1 with plain water. That lengthened the time OK,
>but the negs were extremely flat. I surmised (correctly, as I found later)
>that the cause was the drop in alkalinity; TMD is very sensitive to that.
>I hit on the idea of diluting not with plain water but with a 10 percent
>sodium sulphite solution. Bingo! Very printable negatives, but the grain
was
>so fine that it was nearly impossible to focus the enlarger on it ... The
>superstition that grain is ordained once and for all by the film
manufacturer
>is an ancient but not a venerable one.
>
Hi Lars,
what is the EI of TMX this way? How long the shelf life of the diluited and
sodium sulphite additioned T-Max compared to stock T-Max? Would do the
trick with Xtol? I guess the excess of sodium sulphite must have turned the
T-Max in a sort of "Microdol-T-Max"!
Marco
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