so what it basically comes down to is we want insanely high resolution for 1:4 or 1:1000 contrast ratios so we get acceptable resolution for 1:1.5 and 1:1.2 contrast ratios. Wouldn't it be more meaningful to measure resolution for 1:1.5 contrast to begin with? This may be the main problem of the term "film resolution", that it strongly depends on subject contrast yet is often named as universal film property ("Tech Pan is 200 lp/mm!").
PS: Does anyone know a formula how to calculate the resolution for different contrast ratios of the resolution is know for one? Or is this behavior different for every film (type)?