Has anyone here tried to replicate the classic LensWork duotone look in darktable? I found some details online, but not enough to figure out where to start.
LensWork is printed in full color and duotone, which has deeper blacks, richer tonality, and can reproduce warm hues that more closely match warm-tone original prints
Can you supply a sample image? I am unsure what you are looking to do to your images. I remember warm tone printing paper and that would just be a monochrome image with a slightly warm tone rather than neutral greys.
For my black and whites, I add an extra “color calibration” module using the builtin preset monochrome > luminance-based and move the module after (above) the tone mapper (I use AgX).