Post #2312100
2026-04-11 20:19 UTC
This pair of curves compares true 10m at 20C versus the MDC calculated 11:17 at 18.5C (it was chilly that night).
The curve just doesn't match. The longer dev curve has higher DMAX but a longer toe. And just a different shape.
I had read that Fomapan 100 really needs to be developed at a consistent temperature, but this really shows it.
All 8x10 sheet film, by the way.
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Replies (1)
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@terrillmoore@flx.masto.host 2026-04-11 21:30
Some thoughts: The curves explain "Fomapan highlights" (the flat, lifeless sky): the curve starts to droop after you get about 5 stops (0.3 log units) of exposure above your shadow point. If the sky lands up there, it will get flattened. The non-obvious steps I had to take to get these curves show why Fomapan 100 has a bad reputation in some corners. I should try for a brighter light (a flash?) so I can compare a 0.4 sec exposure to my 21 sec exposure. 3/3