Play a bit around with the threshold parameter of the highlight-reconstruction module. I just have observed some nice results using LCh recovery and threshold of 0.9, the colors have been a bit wrong (green/magenta instead of blue/white), but i was able to fix this with color correction and blendif, too. And the sky has been blown out nearly hopelessly ...
The tonemapping-trick recovers only highlights you have blown during processing, highlights which are blown out in RAW can not be recovered this way. Regards, Markus Am 09.06.2013 23:31, schrieb Roumano: > 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
