Upswept curve

This may be bit off the topic but for years I bemoaned the loss of the old FP4 withD761:1 that would give me a bump in the straight line at the mid tone, lightening ever so slightly Zone V without affecting the highlights and shadows Present day FP-4+ while very good, doesn’t possess this quality. I had a densitometer and plotted curves in those days. over exposure and underdevelopment does not give the same result. It bends the full curve. We use to use that technique masking reflection copy in color separation. Not the same thing .On a the high end drum scanner we could do it as we had a five point scale to work with