Saturday, November 12, 2011

Phenidone-Ascorbic acid - third film in the developer

                              Camera Canon EOS 50e, kit lens 28-80mm
                              Film Kodal Gold 100 C41, unaltered recipe.

Development time based on a baseline for std. B/W film ca 8,5 minutes, compensated for C41 film (ca 25% longer time, and a 6,5% longer time per film through the developer)
8,5 minutes x 1.25 x 1 x 1.065 x 1.065 for a total of 12 minutes @ 20 centigrade

Triplet exposed a box speed, -1 ISO and +1 ISO

Box speed, straight scan, no postprocessing

Box speed, enhanched 1 step

-1 ISO, straight scan, no postprocessing

+1 ISO, straight scan, no postprocessing.

Triplet exposed a box speed, -1 ISO and +1 ISO

This looks quite good, what now matters is how many films we can develop in the mix.
Small matter remaining is the fact that we do not get true blacks with this recipe, we get scannable negatives, but the film leader, fully exposesd to light and developed at the same time as the negatives does not get BLACK, I'm niot quite sure if that matters, it keeps the contrast down to a certain degree, but I think the overall results will be better if we manage to get true blacks.

Feedback from Michael who championed this early on indicates that Gainers early work has been supplanted by a stronger mix, which should give rich blacks and a more films through the developer.
Michael stated that instead of a ratio of 1:100 between Ascorbic acid and Phenidone, it should be replaced with a ratio of 1:40, this being the "sweet spot".  So in the name of science more Phenidone will be added.

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