about raw images

I was happy to see that the new digikam can open a raw image in the editor.
But there is one thing regarding to this: as far as I see it invokes the dcraw
with the following parameters:

dcraw -c -2 -w -a -q 0

So the -q 0 means it uses the bilinear interpolation which is the lowest
quality. The reason I am shooting sometimes in RAW is that I want to obtain the
highest quality. So is it possible use dcraw with a better interpolation like -q
2 or -q 3?

thanks,
Gabor
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[Gilles Caulier]

Le Samedi 28 Janvier 2006 17:26, Dudas Gabor a écrit :

> I was happy to see that the new digikam can open a raw image in the editor.
> But there is one thing regarding to this: as far as I see it invokes the
> dcraw with the following parameters:
>
> dcraw -c -2 -w -a -q 0
>
> So the -q 0 means it uses the bilinear interpolation which is the lowest
> quality. The reason I am shooting sometimes in RAW is that I want to obtain
> the highest quality. So is it possible use dcraw with a better
> interpolation like -q 2 or -q 3?
>
> thanks,
> Gabor

Because digikam 0.8.1 support only raw file editing in 8 bits per color per
pixel, i have restricted quality settings to 'q0'.

In 0.9.0, all dcraw settings are availalble !!! I can test it to compile trunk
branch from svn. all settings are availalble in setup dialog.

Gilles
Gilles Caulier
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[Gilles Caulier]

Le Samedi 28 Janvier 2006 17:26, Dudas Gabor a écrit :

> I was happy to see that the new digikam can open a raw image in the editor.
> But there is one thing regarding to this: as far as I see it invokes the
> dcraw with the following parameters:
>
> dcraw -c -2 -w -a -q 0
>
> So the -q 0 means it uses the bilinear interpolation which is the lowest
> quality. The reason I am shooting sometimes in RAW is that I want to obtain
> the highest quality. So is it possible use dcraw with a better
> interpolation like -q 2 or -q 3?
>
> thanks,
> Gabor

There is a new entry in my blog about new dcraw settings in digiKam with a
little screenshot. Not all dcraw options are available, only the most
importants. Let's me hear if any options are missing for you.

http://www.digikam.org/?q=node/63

Gilles
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There is one thing that is not clear for me:
A picture can have only one white balance settings.
So what is the point in the ability to set the
 - camera color balance and the
 - automatic color balance
options at the same time?

Thanks!
Gabor


> There is a new entry in my blog about new dcraw settings in digiKam
with a
> little screenshot. Not all dcraw options are available, only the most
> importants. Let's me hear if any options are missing for you.
>
> http://www.digikam.org/?q=node/63
>
> Gilles


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[Gilles Caulier]

Le Lundi 30 Janvier 2006 14:13, Dudas Gabor a écrit :
> There is one thing that is not clear for me:
> A picture can have only one white balance settings.
> So what is the point in the ability to set the
>  - camera color balance and the
>  - automatic color balance
> options at the same time?
>

From dcraw man page :

-a :
Automatic color balance. The default is to use a fixed color balance based on
a white card photographed in sunlight.

-w :
Use the color balance specified by the camera. If this can't be found, dcraw
prints a warning and reverts to the default.

Gilles

> Thanks!
> Gabor
>
> > There is a new entry in my blog about new dcraw settings in digiKam
>
> with a
>
> > little screenshot. Not all dcraw options are available, only the most
> > importants. Let's me hear if any options are missing for you.
> >
> > http://www.digikam.org/?q=node/63
> >
> > Gilles
>
> ________________________________________________________________
> Pénzügyi szolgáltatás és hiteligénylés interneten keresztül a nap 24
> órájában. www.klikkbank.hu
>
>
> _______________________________________________
> Digikam-users mailing list
> [hidden email]
> https://mail.kde.org/mailman/listinfo/digikam-users

--
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1.
My raw conversion software (not dcraw) is making a 8-bit TIFF file that digikam
cannot open. If I open it with Gimp and simply save, it will work. Kuickshow can
  also open it easily.
What could be the problem?

2.
Is it possible to get digikam 0.9.0 already or not yet?
 From digikam homepage I have downloaded the svn, and it is digikam 0.8.2

Thanks,
Gabor
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[Gilles Caulier]

Le Lundi 30 Janvier 2006 22:47, Dudas Gabor a écrit :
> 1.
> My raw conversion software (not dcraw) is making a 8-bit TIFF file that
> digikam cannot open. If I open it with Gimp and simply save, it will work.
> Kuickshow can also open it easily.
> What could be the problem?

I can reproduce this problem with any TIFF files from my old camera Olympus
C3000Z. The problem is relevant of dcraw parse method to check if the file is
a RAW or a TIFF file. I need to update the code in digiKam for that. I will
do it.

To make any tests, can you place your tiff file in a web space area for
download ? Thanks in advance.

>
> 2.
> Is it possible to get digikam 0.9.0 already or not yet?

yes, using KDE svn repository. There is no tarball. Warning, 0.9.0 is unstable
and not yet finished. Do not using in production.

>  From digikam homepage I have downloaded the svn, and it is digikam 0.8.2

There are 2 branch in svn : a 'stable' and an unstable named 'trunk'. Only
trunk support better RAW files (in 16 bits for example)

Gilles
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