One thing I find interesting is that BTZS uses five sheets to produce a time/contrast curve.
The method I settled on uses three sheets, with development times spaced widely around a 'best first guess' (so that I'm interpolating rather than extrapolating). I then fit a cubic polynomial to those points, and use the resulting curve. I suppose I really ought to fit a cubic spline, but I'm lazy and the cubic polynomial seems to produce results that are sufficient to my needs.
So I'm left wondering - if I were to use the 5 sheet method, would I see inflections in the time/contrast curve that I'm not exposing with my 3 sheet method?
Or are the curves pretty darn smooth, and using 5 sheets just reduces the need to generate a good initial guess and thus reduce the chance that I'll have to do more runs because my initial guess was not very good (this has, in fact, happened to me).
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