Response to Film with longest straight-line curve for extreme pulling

The developer is as important, if not more so, than the film in getting an extended range. I'm surprised that no-one has mentioned Tmax developer (not the RS version).
I don't like it for normal use, personally, but Kodak's data sheets show that it gives a very extended straight line characteristic with Tmax 100 film. The published curves show an almost 10 stop range with no sign of a shoulder, even at high gammas.

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