Sounds promising. You should wrap the node with the colourspace nodes. Should work fine that way.
Will try here and maybe roll it into the Gizmo Howard > On 8 Apr 2017, at 5:14 pm, Deke Kincaid <dekekinc...@gmail.com> wrote: > > The difference between how nuke and photoshop most likely has to do with the > colorspace it is done in(scene linear vs srgb or lab). Try doing this in > other colorspaces in Nuke and converting it back. > >> On Sat, Apr 8, 2017 at 9:02 AM, Stepan Z <motionarti...@gmail.com> wrote: >> Hello Howard >> >> Thanks for doublechecking, thats what i found as-well! I think selective >> colour on relative in photoshop just does something completely different. >> I'll keep playing around with it and see what i find! >> >> Thanks for your help! >> >> All the best >> >> Stepan >> >>> On 6 Apr 2017, at 19:44, Howard Jones <how...@axis-vfx.com> wrote: >>> >>> Hi Stepan >>> >>> Had a chance to have a look at the regrading is done like this >>> >>> The image is split into its Primaries, secondaries and tertiaries and these >>> create mattes. >>> >>> These mattes are then multiplied by the colour - so from this I would think >>> that this already is a relative grade as, for example only 50% red is >>> applied to a 50% matte. >>> >>> Cheers >>> >>> Howard Jones >>> Visual Effects Supervisor >>> m: 07973 265624 | e: how...@axis-vfx.com | w: www.axis-vfx.com >>> >>>> On 1 Apr 2017, at 19:30, Howard Jones <how...@axis-vfx.com> wrote: >>>> >>>> The main area is quite simple, once the image has been split up into its >>>> primaries, secondaries and tertiaries, you have a set of mattes which are >>>> coloured back to the original colour. This is done with an offset from >>>> memory. This is already multiplied by the matte so it may already be >>>> relative. Not sure. >>>> >>>> If not it may be a case of multiplying a constant by the matte. However I >>>> think I used to do that and it didn't handle values greater than 1. >>>> >>>> Anyway at the moment I haven't worked out how to do this without an >>>> expression node, which maybe the answer anyway. >>>> >>>> Howard >>>> >>>>> On 31 Mar 2017, at 5:50 pm, Howard Jones <how...@axis-vfx.com> wrote: >>>>> >>>>> Ok >>>>> Send anything back please and I can update the tool. >>>>> >>>>> Howard >>>>> >>>>>> On 31 Mar 2017, at 5:34 pm, motion artist <motionarti...@gmail.com> >>>>>> wrote: >>>>>> >>>>>> Thanks Howard! I'll experiment and see what I manage to come up with! >>>>>> >>>>>> All the best >>>>>> >>>>>> Stepan >>>>>> >>>>>>> On Thu, Mar 30, 2017 at 5:53 PM, Howard Jones <how...@axis-vfx.com> >>>>>>> wrote: >>>>>>> Found this, I’d have to have a think but don’t wait up for it. >>>>>>> >>>>>>> https://www.dpreview.com/forums/post/26485128 >>>>>>> >>>>>>>> Relative - Changes the existing amount of cyan, magenta, yellow, or >>>>>>>> black by its percentage of the total. For example, if you start with a >>>>>>>> pixel that is 50% magenta and add 10%, 5% is added to the magenta (10% >>>>>>>> of 50% = 5%) for a total of 55% magenta. (This option cannot adjust >>>>>>>> pure specular white, which contains no color components.) >>>>>>>> Absolute - Adjusts the color in absolute values. For example, if you >>>>>>>> start with a pixel that is 50% magenta and add 10%, the magenta ink is >>>>>>>> set to a total of 60%. >>>>>>>> >>>>>>>> Note: The adjustment is based on how close a color is to one of the >>>>>>>> options in the Colors menu. For example, 50% magenta is midway between >>>>>>>> white and pure magenta and receives a proportionate mix of corrections >>>>>>>> defined for the two colors. >>>>>>>> >>>>>>> >>>>>>> Howard Jones >>>>>>> Visual Effects Supervisor >>>>>>> m: 07973 265624 | e: how...@axis-vfx.com | w: www.axis-vfx.com >>>>>>> >>>>>>>> On 30 Mar 2017, at 16:54, motion artist <motionarti...@gmail.com> >>>>>>>> wrote: >>>>>>>> >>>>>>>> Hello again >>>>>>>> >>>>>>>> So the Secondary Colour works a treat, but I was wondering how to >>>>>>>> implement the Relative vs Absolute option that the PS selective colour >>>>>>>> has in Nuke. It doesn't seem like anyone from the photoshop community >>>>>>>> knows exactly how this works. Has anybody tried reverse engineering >>>>>>>> that? >>>>>>>> >>>>>>>> Appreciate all the help >>>>>>>> >>>>>>>> All the best >>>>>>>> >>>>>>>> Stepan >>>>>>>> _______________________________________________ >>>>>>>> Nuke-users mailing list >>>>>>>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >>>>>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> A X I S V F X >>>>>>> The Bottle Yard Studios >>>>>>> Whitchurch Lane >>>>>>> Bristol BS14 0BH >>>>>>> >>>>>>> axis-vfx.com >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Nuke-users mailing list >>>>>>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >>>>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>>>> >>>>>> _______________________________________________ >>>>>> Nuke-users mailing list >>>>>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >>>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >>> >>> >>> >>> A X I S V F X >>> The Bottle Yard Studios >>> Whitchurch Lane >>> Bristol BS14 0BH >>> >>> axis-vfx.com >>> _______________________________________________ >>> Nuke-users mailing list >>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> >> _______________________________________________ >> Nuke-users mailing list >> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > _______________________________________________ > Nuke-users mailing list > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users -- *A X I S V F X* The Bottle Yard Studios Whitchurch Lane Bristol BS14 0BH axis-vfx.com
_______________________________________________ Nuke-users mailing list Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
