Hi, I have tested it, yes i can recover details on highlihts but get some magenta area instend of white... (tested on a test image heavy over exposed)
The best way to remove them after is to use to channel mixer with blendif H, input, magnenta color ? Or i doing something wrong & you can share a style for exemple ? Regards Le samedi 08 juin 2013 à 23:02 +0200, Markus Jung a écrit : > Sorry, one misstake: 0-140, not 140-255 ;) > > Am 08.06.2013 22:47, schrieb Markus Jung: > > I have just found something which works quite fine for me, even if the > > sky is fully blown out during processing: > > > > - Process for the dark regions of your image > > - Activate the module "tonemapping" > > - Set contrast compression to 1,0 and use blendif to limit the effect of > > the module to the bright parts of the image (for example 140-255) > > - Use mask blur (for example 2.5) to prevent halos and other ugly effects. > > > > Regards, > > Markus > > > > Am 28.05.2013 23:42, schrieb Chris Siebenmann: > >> A number of darktable processing steps can push unclipped RAW channels > >> into overexposure under some circumstances (for example, the standard > >> Nikon base curve not infrequently blows highlights out on me). As a > >> relative beginner at darktable, I'm interested in people's views on the > >> best and easiest way to recover the highlights in this case. > >> > >> I think that what I want at a conceptual level is to pull the > >> highlights down (I assume inevitably reducing highlight contrast), > >> but there may be something that gives a better visual look. Things > >> I've tried, without universal success: > >> > >> * the Shadows and Highlights module often doesn't really reduce the > >> blown highlights very much (or at all) and can give me an unnatural look > >> (this may mean that I need to change the 'soften with' setting). > >> > >> * the Zone module also doesn't seem to be able to pull down the > >> brightness of the blown highlights, although it can be used on things > >> that aren't too bright. > >> > >> * Tone curves have defeated my ability to make good fine adjustments at > >> the bright end of the curve without screwing up the rest of the image. > >> I assume it's possible but I'm clearly not doing something right. > >> (I've tried setting the linear preset to freeze most of the 'curve' > >> and then monkey around only with the top end.) > >> > >> (I suspect that this is the right solution and what I want to do is > >> develop some sort of 'highlight recovery' preset, but it's beyond my > >> current darktable skill.) > >> > >> * the Levels module won't let me move the white point out to the right > >> (which I think might have roughly the effect I want but I could be > >> wrong about). > >> > >> Since I suspect that this sort of question always works better with an > >> example, here's a sample D7100 NEF that exhibits the sort of 'blown in > >> processing' effect that I'm talking about: > >> > >> http://www.cs.toronto.edu/~cks/tmp/darktable/DSC_1101.NEF > >> > >> (This picture has some genuinely clipped areas, but only a small > >> number; many more blow out with the default Nikon tone curve.) > >> > >> (Note that I'm presenting this for illustrative purposes; I'm less > >> interested in how to process this specific picture than in how to > >> recover highlights in the general case that this picture is an example > >> of.) > >> > >> Thanks in advance to anyone who has suggestions, guidance, etc. > >> > >> - cks > >> > >> ------------------------------------------------------------------------------ > >> Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET > >> Get 100% visibility into your production application - at no cost. > >> Code-level diagnostics for performance bottlenecks with <2% overhead > >> Download for free and get started troubleshooting in minutes. > >> http://p.sf.net/sfu/appdyn_d2d_ap1 > >> _______________________________________________ > >> Darktable-users mailing list > >> Darktable-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/darktable-users > >> > > > > > > ------------------------------------------------------------------------------ > > How ServiceNow helps IT people transform IT departments: > > 1. A cloud service to automate IT design, transition and operations > > 2. Dashboards that offer high-level views of enterprise services > > 3. A single system of record for all IT processes > > http://p.sf.net/sfu/servicenow-d2d-j > > _______________________________________________ > > Darktable-users mailing list > > Darktable-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/darktable-users > > > > > ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. A cloud service to automate IT design, transition and operations 2. Dashboards that offer high-level views of enterprise services 3. A single system of record for all IT processes http://p.sf.net/sfu/servicenow-d2d-j _______________________________________________ Darktable-users mailing list Darktable-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-users