You are correct... I just checked and it reconstructed the highlights
correctly. WIth LCh reconstruction.
I said it just clipped because at 0.837 or higher, I just see a solid gray
area... compatible with what I thought was clipping.
But if I set it to 0.836 or lower, I instantly see the bright clouds. It's
not progressive.
Julian.
On Fri, Feb 22, 2013 at 5:33 AM, johannes hanika <[email protected]> wrote:
> the whitepoint in cameras.xml for this camera is overly conservative
> and should be lowered quite a bit. if i set it manually to 0.796 in
> the highlight reconstruction module, i get:
>
> http://picpaste.com/img_0001-9Nd40hrz.jpg
> http://picpaste.com/img_0002-hqTB2bvP.jpg
>
> (full processing details in the xmp in the jpg)
>
> j.
>
> On Fri, Feb 22, 2013 at 2:06 PM, Henrik Andersson <[email protected]>
> wrote:
> > 2013/2/22 johannes hanika <[email protected]>:
> >> On Fri, Feb 22, 2013 at 1:22 PM, Julian J. M. <[email protected]>
> wrote:
> >>> Hightlight reconstruction in darktable seems to just clip the values,
> >>
> >> not true.
> >>
> >
> > is it broken ? feels like it... playing with the TO's raw file.
> >
> >>> so
> >>> that the color turns white (or gray if you keep lowering it)... But it
> >>> looses much information that's there. Usually it's the green channel
> what
> >>> gets overexposed, but knowing the aproximated tone of the area, using
> the
> >>> red and blue channels, it should be possible to reconstruct much of the
> >>> missing information.
> >>>
> >>> That's what Rawtherapee seems to have implemented:
> >>> http://code.google.com/p/rawtherapee/issues/detail?id=780
> >>> There's a patch there... not sure how hard would it be to port it to
> >>> darktable.
> >>>
> >>> Julian.
> >>>
> >>>
> >>> On Thu, Feb 21, 2013 at 10:39 PM, johannes hanika <[email protected]>
> wrote:
> >>>>
> >>>> yes, what simon said. there are two things i would try, one is
> >>>> exposure, the other is adjust the basecurve to something a little
> >>>> lower in the bright regions at least (or try the `dark contrast' one
> >>>> and pull down the right end some more). you first need to get the
> >>>> highlights down < 1.0 before you can actually see the effect of
> >>>> reconstruction.
> >>>>
> >>>> -jo
> >>>>
> >>>> On Fri, Feb 22, 2013 at 11:36 AM, Simon Spannagel <[email protected]>
> wrote:
> >>>> > Hi Hans Petter,
> >>>> >
> >>>> > have you tried to adjust the exposure in darktable? To me it looks
> a bit
> >>>> > like the details should be there in general but the areas are still
> >>>> > overexposed since both dt pictures are much brighter in general.
> >>>> >
> >>>> > Simon
> >>>> >
> >>>> >
> >>>> > Am 21.02.2013 23:29, schrieb Hans Petter Birkeland:
> >>>> >> Hi,
> >>>> >> I'm testing out Darktable and Rawtherapee at the moment to see
> which
> >>>> >> one
> >>>> >> of them I will use in the future. I must say that Darktable wins in
> >>>> >> every respect but one: Highlight reconstruction. I find that
> >>>> >> Rawtherapee
> >>>> >> is capble of recovering much more detail from overexposed
> highlights.
> >>>> >>
> >>>> >> Here are some examples:
> >>>> >> https://www.dropbox.com/sh/s15m6zokz2ksugb/UGt6o64Lj9
> >>>> >>
> >>>> >> The method I used in Darktable was Reconstruct in LCh, and in
> >>>> >> Rawtherapee I used Color Propagation.
> >>>> >>
> >>>> >> Any idea why Darktable can't find what is actually there? The Color
> >>>> >> Propagation is quite slow on my ancient system, but the result is
> so
> >>>> >> much better. Any chance that Darktable will do this in the future?
> >>>> >>
> >>>> >>
> >>>> >> My system:
> >>>> >> Linux Mint 13, 32 bit
> >>>> >> Darktable 1.1.3
> >>>> >> Rawtherapee 3.0.0.6
> >>>> >>
> >>>> >>
> >>>> >> Thanks,
> >>>> >> Hans Petter Birkeland
> >>>> >>
> >>>> >>
> >>>> >>
> >>>> >>
> ------------------------------------------------------------------------------
> >>>> >> Everyone hates slow websites. So do we.
> >>>> >> Make your web apps faster with AppDynamics
> >>>> >> Download AppDynamics Lite for free today:
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> >>>> >>
> >>>> >>
> >>>> >>
> >>>> >> _______________________________________________
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> >>>> >>
> >>>> >
> >>>> >
> >>>> >
> ------------------------------------------------------------------------------
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> >>>>
> >>>>
> >>>>
> ------------------------------------------------------------------------------
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> >>>
> >>>
> >>>
> >>>
> >>> --
> >>> http://www.julianmenendez.es
> >>
> >>
> ------------------------------------------------------------------------------
> >> Everyone hates slow websites. So do we.
> >> Make your web apps faster with AppDynamics
> >> Download AppDynamics Lite for free today:
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