Am 01.11.2012 09:47, schrieb Alexander Wagner: > > Is there currently a way to see/work the individual channels > in dt? > > Though it is a bit "abstract" to work only in L, a or b > displayed in grayscale this sometimes helps, and especially > sharpening should work on the L-channel (mostly at least), > so "just display L" could probably already solve the OPs > issue. That's not possible currently. What you see is in any case a conversion of Lab to RGB. One could think about some fake blend modes to map L, a and b into an L'a'b' where a' and b' are set to zero and L' represents a mapped version of the original L, a and b. However, this is likely not to happen short term. We also need to pay attention not to invent too many blend modes, else people lose the overview :)
> > When I use Lab sharpening in <this other great software>, I > usually decompose the image use unsharp mask on L only and, > if there is some noise, blur a and/or b slightly using a > gausian e.g. Though there's a plugin for Lab sharpen, I > admit that I usually do it manually, since I understood how > it works. Simply cause I can see the effect easier. I think > this is probably what the OP intends. AFAIK I can not this > kind of workflow replicate that in dt at the moment, as > sharpen works in Lab but on all channels simultaneously, > right? We already do sharpening only in L and leave a and b unchanged. If you want to additionally apply some denoising on a and b only, take module lowpass with blend mode "color". Ulrich ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
