Response to Development times for dilute concentrations of developer

They are not a linear link. The time changes more with just a slight change in the developer. I found a couple minute change just changing HC-110 from 1:8 to 1:10. Maybe it works out, but you can't bank on it. I find HC-110 at 1:15 for about twelve minutes good for soft T- Max 100's. I begin the agitation normally, but spread it out longer toward the end. By five or six minutes, I start to add time between agitations, until the last one sits for about two minutes. That helps soften contrast too. You can't do that the entire time without risking uneven film. I think I have played with it at around 1:30 as well.

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