Response to Vitamin enriched D-23??

OK, here goes:

D3200 in D-23 1:3 w 4g/L sodium ascorbate, "NutriBiotic" brand from the local health-food store. I tried a couple of those mall chain stores but they didn't have a clue.

At first I tried plain D-23 (curious about John Douglas' recommendations) and while that worked ok it didn't show me anything. For EI 1600, D-23 1:3 20'/75F rotary agitation.

The addition of sodium ascorbate required a reduction in development time to 15'/75F and yielded identical curve shape and EI. Graininess, though, is easily visibly decreased.

The "real" speed, .10DU above fb&f for Zone I, is EI 1000.

These negs are pretty hot; since it's a push the rating may really need to be EI 2400 or so. DD-X 1:4 gives more shadow density and less contrast for the same EI.

What I'll need to do is shoot some direct-comparison negs. I haven't shot much D3200 lately; I've been more into D400 at EI 800 at f2 in 35mm rather than D3200 at f2.8 EI 1600 in 120.

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