Hi,
I certainly like many of the things you have done in darktable.
and the log tone mapping is essentially dt’s filmic with a simplified UI.
yes and no. I think they use the same tone mapping formula (that comes from ACES), but the implementations are independent. I am also not using splines at all, but a simple remapping to linear. In ART there is also the “regularisation” slider that tries to preserve some local contrast.
In my view, that is part of the look, and therefore left to the tone curve:
