On Tue, 12 Mar 2013 18:30:46 +0100
Ulrich Pegelow <[email protected]> wrote:
> Am 12.03.2013 17:14, schrieb Eildert Groeneveld:
> > On So, 2013-03-10 at 11:19 +0100, Ulrich Pegelow wrote:
> >> Am 10.03.2013 10:12, schrieb Eildert Groeneveld:
> >>> This thread has been quit for some time, but I think there are indeed
> >>> issues.
> >>> I am running git.
> >>> Generally speaking, after correcting exposure for clipping and setting
> >>> the black point, I want to do shadows recovery. The starting point is
> >>> the slides is 50 with highlights at -50 (radius 100, compress 50%,
> >>> shadow col adj 100%, highlights col adj 50%)
> >>>
> >>> Observations:
> >>> 1. when going to 52% the dark parts become lighter as intended
> >>> 2. when going to 48% the same seems to happen. Is that correct?
> >>> 3. when going back to 50% from either of the above the original
> >>> state is definitely NOT reached again. This can be clearly seen
> >>> when going back in the history to the step prior to "shadows
> >>> and highlight"
> >>>
> >>> What am I misunderstandin/or else?
> >>
> >> I fear I don't understand at all. What parameter do you modify here? The
> >> "shadows" slider?
> > yes, indeed. My steps were as listed above:
> > 1. set exposure to remove clipping
> > 2. set the black point (both done on the histogram)
> > 3. then moved to "Shadows and Highlights" which open sliders starting
> > with "Shadows" and "highlights" come second (followed by others)
> > 4. when I get there "shadows" slider stands at 50 and "highlights" at
> > -50
> > 5. when I now move the "shadows up to 52 and higher (like60) the dark
> > parts do get lighter. so far so good.
> > 6. when I move the slider back to 50 it does get a little darker again
> > but ist MUUCH lighter than it was at 4. That should not happen,
> > should it?
expanding the module doesn't enable it. fiddling with sliders does
enable it though and as it was said default values aren't nop.
>
> I cannot confirm your your findings. And it is really strange what you
> describe, unless there is something completely broken with your setup.
> But even then your findings are really surprising.
>
> darktable, being a non-destructive image editor, behaves completely
> different to programs like GIMP. Every editing action in darktable is
> just modifying a recipee ("history stack") for image processing. The
> history stack applied to the image should always generate the same
> result - fully determinstic and reproducible as long as the parameters
> stay the same.
>
> Please do the following: after step 4 generate a snapshot (left panel
> directly below the navigation window). Then do steps 5 and 6. After that
> please activate the snapshot view by clicking on the snapshot name and
> compare. You might want to upload a screenshot taken with the snapshot
> active, along with your raw file and XMP file to dropbox.com so we can
> have a closer look.
>
> Ulrich
>
>
>
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Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
endpoint security space. For insight on selecting the right partner to
tackle endpoint security challenges, access the full report.
http://p.sf.net/sfu/symantec-dev2dev
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