You can always apply one of the saturation-related tools and add a parametric mask.
However, reading your emails pushed me to check the documentation, and I've come to realise that there is a problem with the documentation of the Velvia module (unless its behaviour has been intentionally inverted since its initial version). According to a blog entry, it may do what you expect from vibrance: https://www.darktable.org/2011/10/different-kind-of-saturation/ 'this was my first module i developed for darktable, (...) velvia simply adds more saturation to low saturated pixels than high saturated ones. the mid-tones bias slider, controls the spread of saturation added to the image, setting this value to zero, the result of the saturation will not be restrained to low saturated pixels.' However, this description conflicts with what we have in the manual ( https://www.darktable.org/usermanual/en/color_group.html) 'The velvia module enhances image saturation. Its effect is tailored to increase saturation less on lower saturated pixels than on highly saturated pixels. (...) The mid-tones bias slider (...) reducing its value reduces mid-tone protection and makes the overall velvia effect stronger.' So, here, the exact opposite behaviour is stated (preference of low vs high saturation pixels), and the mid-tones slider is supposed to make the effect more or less pronounced based on tonality (brightness, lightness), rather than on saturation. Could perhaps one of the developers shed some light on this? Thanks, Kofa ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
