2013/8/5 Torsten Bronger <[email protected]>
> Hallöchen!
>
> Marie-Noëlle Augendre writes:
>
> > I said a few days ago that the basic curve gives lobster skin to
> > people. I'm now working on a whole batch of landscapes
> > photographies, and for them too the colors are very wrong, with
> > greens and yellows completely oversaturated.
>
> Could you provide a RAW+JPEG pair somewhere?
>
Which kind of JPEG would be useful? I shoot in RAW only, so I have no
'ordinary' JPEG straight from the camera; I'd have to create it, unless the
embedded JPEG thumbnail is sufficient.
>
> > In both cases, I have to deactivate the basic curve in order to
> > start working on a not too bad picture. When doing so, in both
> > cases, the histogram comes way too much on the left, and I need to
> > adjust the exposition for every picture... [...]
>
> Markus has already explained it; the base curve is supposed to be
> there, both when the camera generates a JPEG and when Darktable
> processes the picture. If you switch it off, the histogram must
> look odd.
>
> Possibly the base curve in Darktable is not perfectly suited for
> your camera. I observe something like that for mine. An improper
> base curve can enhance saturation of darker areas. I was able to
> get a base curve closer to the manufacturer's by analysing RAW+JPEG
> pairs.
>
As it is, the base curve for my camera (Canon 7D) seems to be completely
wrong, and is unusable in most cases. If I open a RAW picture in Digikam
edit mode, I get a much more 'normal' picture, that is good start for
working upon; with Darktable, the picture looks so wrong I cannot even
imagine what I can do with it!
Marie-Noëlle
PS: I don't know how you do that, but unlike other mailing-list users, I
get the right sendee (mailing-list) when I use the 'Answer' button;
usually, I have to remember to replace the sender email by the
mailing-list's.
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