It’s probably in the minutes. Acros has good reciprocity characteristics— just half a stop compensation for exposures over 2 minutes. Try that out instead of delta if your times are longer than 45 seconds.
In addition to what others recommended, The black cat exposure guide (google it) is a...
I’m also interested, particularly in the Tmax but would take it all if you don’t want to break it up. I sent a PM about it before seeing the all or none comments.
Would also buy the tmax from whoever else gets it if they’re interested
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