I misunderstood. I thought the Color Calibration module, activated after a LUT was applied in LUT 3D, would pick up and reflect in its sliders the change in the image produced by the LUT and I can then tweak the sliders from there on. I now see it doesn’t work that way, the two modules are unrelated and independent, and I can use the film emulating presets in either LUT 3D or Color Calibration modules.
I appreciate your help, Mica.