The developing time widget seems to work. Here are two pics of the same subject, one developed for 10:25 at 19.5°C, the other for 6:25 at 25.5°C. It would seem that regardless of whether my understanding of the chemistry is right or not, the calculation does produce the right result.
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| 10:25 @ 19.5°C | 6:25 @ 25°C |
Although there are some differences between the two images, the upper and lower bounds of the density histogram were about the same for both negs. I suspect the differences are mostly to do with the change in the ambient light (there were some fast-moving light clouds that came and went as I was shooting).
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