Thank you all for sharing your experiences with the tabular grain films. It's fascinating to read the diversity of opinions.
So, Acros II is a newer tabular emulsion, compared to the original ones from the 1980s and 1990s, so why not look at another newer tabular film, the KODAK PROFESSIONAL T-MAX 400 (TMY-2). I have searched for Kodak's characteristic curves, and the most recent I found is from 2016, so it might be for the older TMY film. Still, I think it's nice to be able to compare the two. Looking "by eye," the overall shapes are similar, and Kodak got about the same speed as I did (maybe 1/4 stop more?), though it is hard to tell exactly. Here are the two curves to compare:
Kodak:
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My own test (TMY-2):
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I think that for a lot of outdoor scenes, TMY-2 can be successfully exposed at EI400, only lowering the EI and cutting development time for scenes of seven stops or more. That's what I typically do, anyway.
@Andrew O'Neill I am working on it. It'll be a few months before the UI is decent enough to show.
@Craig I agree that it is surprising to see the Acros II speed so low. I will, therefore, retest in D-76 and report as soon as it's ready. Thank you for bringing it up!
@Andrew O'Neill I am working on it. It'll be a few months before the UI is decent enough to show.
Thanks! I look forward to it!