OK ... I do understand this response ... the two different bars are used for two different masks. Those masks could also have been used in the reverse order. But the same thing can be done with a single bar used for multiple masks. I have on occasions used three sets of masks all of which have been applied through one single bar (scale).
My real question is: since multiple masks can be applied with a single bar, is the double bar confusing for users? David On 06/05/2018 01:49 PM, William Ferguson wrote: > > > On Tue, Jun 5, 2018 at 1:57 PM, David Vincent-Jones > <[email protected] <mailto:[email protected]>> wrote: > > I use parametric masking ... a lot! .... It probably is a part > of my processing on at least 90% of my images but, for me, there > is still a problem in understanding how to correctly use the > 'output' bar to gain full functionality of the module. > > I have watched a number of on-line videos and read the blogs and > with one exception the top output bar appears to be totally > ignored.. I do remember when this module was new that there was a > blog showing the use of both bars (I am not sure that I really > understood it even then) but the question that I have today is if > this output bar is truly useful then maybe we need some further > direction from somebody that is fully familiar with its > capabilities and actually uses it. > > I used a picture that had grass. I opened the monochrome module and > created a parametric mask, using the input sliders, to select the > grass and desaturate it. Then I used the output sliders on the > luminosity channel to change how the desaturation was applied, like a > blend if. > > I also tried it with exposure. I selected something with the > eyedropper so that I got the indicator in the channels. I created a > parametric mask to select something that was indicated, then changed > the exposure. The ouput slider indicator moved as I changed the > exposure. > > So, it appears to me that the input sliders select what is given to > the module to be changed and the output sliders select how the result > of the change is applied. Up until you asked the question I'd never > played with them, but this opens up all sorts of new possibilities. > Thanks. > > Bill > > David > > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > [email protected] > <mailto:darktable-user%[email protected]> > > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > [email protected] ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
