Over the last months I have successfully standardized on HC110 as an easy-to-use one-shot developer for TMY, TX, and Bergger Pancro 400.
My time for TMY at ISO 320 is 6 minutes at 20 C as recommended by the massive development chart.
Now,for a project, I would like to shoot this film at ISO 800. But when I go to the massive development chart, I am confronted with this mystery:
Kodak TMax 400 HC-110 B 640 7 7 7 20C [notes]
Kodak TMax 400 HC-110 B 800 5.5 5.5 5.25 20C [notes]
Kodak TMax 400 HC-110 B 1600 7.5 7.5 7.5 20C [notes]
Kodak TMax 400 HC-110 B 3200 9.5 9.5 9.5 20C [notes]
As you can see, the time for 640 calls for a bump of 1 minute to 7 minutes--which kind of makes sense. 1600 and 3200 also call for time bumps. But 800 calls for less time, 5.25 minutes for sheet, which seems bizarre to me.
Does anyone have a an explanation for this? Better yet, does anyone have a good starting time for this film at 800 ISO in any dilution of HC 110? Thanks for any help/
Bill
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