Hi, For me it's still the same mask, but different threshold based on the pre-effect image (input slider) or post-effect image (output slider).
Yours, Rémi 2018-06-06 1:48 GMT+02:00 David Vincent-Jones <[email protected]>: > 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]> > 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] >> > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > [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]
