Response to TMZ 3200 and HC-110 (dil B) - Trouble with film speed?

I can't speak for HC-110. I use T-Max developer, with the film rated at EI 800. At 25 deg C, Kodak suggest 6.5 minutes, but (for me) it really needs 9.5 minutes (which is the Kodak time for EI 3200).

Either Kodak use funny water, or their definition of EI is different to mine ("Zone I is density 0.1 above fb+f).

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