Re: [darktable-user] Manual lines for perspective correction?

[Terry Pinfold]

I tested the image on the latest Windows version of DT and the auto correction 
options worked well for me. You can put guides on and use manual slider 
controls to set yourself if you prefer. Applying specific lens distortion 
correction first may help improve final result, but I was pleased with the job 
auto did. BTW, GIMP has very good manual perspective tool options if DT result 
is not to your liking.

Dr Terry Pinfold
Cytometry & Histology Lab Manager
Lecturer in Flow Cytometry
University of Tasmania
17 Liverpool St, Hobart, 7000
Ph 6226 4846 or 0408 699053

From: Felix E. Klee 
Sent: Saturday, 25 July 2020 2:39 PM
To: darktable-user@lists.darktable.org 
Subject: [darktable-user] Manual lines for perspective correction?

In the following image, the perspective correction tool does not do a
good job at finding straight lines. It gets confused by the brick wall.

https://archive.org/details/p-1100853

Is there a way to manually draw green lines?


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[darktable-user] Manual lines for perspective correction?

[Felix E. Klee]

In the following image, the perspective correction tool does not do a
good job at finding straight lines.  It gets confused by the brick wall.

https://archive.org/details/p-1100853

Is there a way to manually draw green lines?


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Re: [darktable-user] Camera calibration profiles

[Bill Martz]

What I was indicating was that for a beginner, it is tempting to think that
a good starting point is the jpg, but as I explained, that's not what dt is
designed for, nor what users want.

On Fri, Jul 24, 2020 at 4:57 PM Pascal Obry  wrote:

> Le vendredi 24 juillet 2020 à 15:53 -0400, Bill Martz a écrit :
> > It's very tempting to want to start with the jpg setup and modify
> > from there.
>
> Why? Out of camera Jpeg is "designed" by the engineer of the camera.
> Not two jpegs from different vendors are the same. So why it is even
> good? Why it is even a good start?
>
> This question comes very often and I'm still not understanding the
> goal. The out of camera jpeg is one possibility out of many others and
> most the time the vendors do boost the colors as it please the
> beginners.
>
> Try Filmic, do the rendering yourself... Create your own preset, be
> creative and stop trying to follow designed paths which are not not to
> be the ultimate choice.
>
> --
>   Pascal Obry /  Magny Les Hameaux (78)
>
>   The best way to travel is by means of imagination
>
>   http://www.obry.net
>
>   gpg --keyserver keys.gnupg.net --recv-key F949BD3B
>
>


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Re: [darktable-user] Camera calibration profiles

[Terry Pinfold]

HI Mikael,
   Lightroom is a great program if you are willing to pay the
subscription. Using the included camera profiles like landscape and
portrait hands the creative decisions over to someone else who has written
the programs. I personally never use these profiles in Lightroom. I have my
own styles where I like my landscapes taken on a sunny day to be adjusted
differently to a landscape taken on an overcast day because the lighting
and contrast are so different. That is how I work with Lightroom.

In darktable you have the base image without any preconception forced on
you by the software writers. You have the luxury of creating your own
unique and creative picture styles. You can save them as a style so when
you open similar images you select similar styles for these images. It
might sound hard work to set these up, but it is not. With respect, the
whole idea of using raw file editors like LR and DT is to bring out the
best in the images and not be limited by the camera manufacturer's
preconceived ideas imposed into the JPG image created by the camera. I
encourage you to embrace the differences and freedom of DT and not expect
DT to be just a free version of LR. I have LR, but I defer to DT for my RAW
file edits because it allows more creative control than LR. LR is a great
tool for the professional who does not want to spend time getting the best,
but rather needs a quick cookie cutter system to throw out very good images
quickly with little effort. DT is more of an artists tool and is not as
streamlined as LR, but if I want LR I pay the subscription and use LR.

Goodluck and enjoy discovering what makes DT so great. Well done to all the
volunteers who develop these great programs free of charge.

Terry

On Sat, 25 Jul 2020 at 03:47, Mikael Ståldal  wrote:

> That sounds quite complicated. I just want to be able to use the
> profiles that are built-in in my cameras. With Lightroom, I could
> extract them with Adobe DNG Profile Editor.
>
>
> On 2020-07-24 12:16, KOVÁCS István wrote:
> > On Fri, 24 Jul 2020 at 11:24, Mikael Ståldal  wrote:
> >> In Lightroom, I could apply camera calibration profiles to make RAW
> >> images look like JPEGs from from camera. And also chose between
> >> different profiles from the camera (like portrait, landscape,
> >> monochrome, vivid). Is it possible to do this in Darktable?
> >
> > You may find a ready-made style, but if not, you can make your own:
> > https://pixls.us/articles/profiling-a-camera-with-darktable-chart/
> > 'Either we fit to a JPEG generated by the camera, which can also apply
> > creative styles (such as film emulations, filters), or we profile
> > against real color reproduction. For real color a color target ships
> > with a file providing the color values for each patch it has.
> > In summary, we can create a profile that emulates the manufactures
> > color processing inside the body, or we can create a profile that
> > renders real color as accurately as possible.'
> >
> > Kofa
> >
> 
> > darktable user mailing list
> > to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
> >
>
> 
> darktable user mailing list
> to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
>
>

-- 
Dr Terry Pinfold
Cytometry & Histology Lab Manager
Lecturer in Flow Cytometry
University of Tasmania
17 Liverpool St, Hobart, 7000
Ph 6226 4846 or 0408 699053


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Re: [darktable-user] Camera calibration profiles

[Pascal Obry]

Le vendredi 24 juillet 2020 à 15:53 -0400, Bill Martz a écrit :
> It's very tempting to want to start with the jpg setup and modify
> from there. 

Why? Out of camera Jpeg is "designed" by the engineer of the camera.
Not two jpegs from different vendors are the same. So why it is even
good? Why it is even a good start?

This question comes very often and I'm still not understanding the
goal. The out of camera jpeg is one possibility out of many others and
most the time the vendors do boost the colors as it please the
beginners.

Try Filmic, do the rendering yourself... Create your own preset, be
creative and stop trying to follow designed paths which are not not to
be the ultimate choice.

-- 
  Pascal Obry /  Magny Les Hameaux (78)

  The best way to travel is by means of imagination

  http://www.obry.net

  gpg --keyserver keys.gnupg.net --recv-key F949BD3B


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Re: [darktable-user] Handling of duplicates and storage of metadata

[Patrick Shanahan]

* jot ess  [07-24-20 16:22]:
> Hello,
> I'm new to darktable (coming from Lightroom 5.7) and I'm trying to
> find a workflow that works for me. I usually shoot raw + jpg, then
> import both from my camera, renaming them -MM-DD HH-MM ###.xxx as
> I import and then I add geotags via gpx files.
> (Camera: Lumix TZ101)
> 
> These are the problems I encountered while trying. Was it errors in
> usage? Wrong expectations?
> 
> - The setting not to ignore jpgs when importing is ignored. (Only raws
> are imported, I copied jpgs by hand.)

there is an option to "ignore" jpgs.  If you select or check this option,
you will not import jpg files.

> - When deleting/moving pictures while they are grouped (raw+jpg), only
> the raw file is deleted/moved (although the confirmation question
> shows the hint that duplicates are also moved - they aren't).

this one is easy, a jpg is NOT a duplicate jpg != raw
and darktable considers them as different images.

> - The way of handling duplicates is incompatible with other software
> (e.g. Adobe, GeoSetter) in that it generates separate xmp files
> (name.jpg.xmp + name.raw.xmp) for duplicates. I don't know any other
> software that is able to read this correctly, to understand what files
> belong together.
> They generate one common xmp file for the raw file (name.xmp) and for
> the jpg file they write metadata directly into the jpg. I believe this
> is the expected behaviour of duplicates.

again, the jpg is not a dup of the raw
and darktable does not try to be "compatible with other software" raw
image conversion software, ie: lightroom.

and dt never writes/alters an image file.  It writes xmp files associated
with the image and writes data to the exported image.

> - The way pictures are counted is confusing to me. I think duplicates
> should be counted as 1 picture in the picture/selected picture count.
> At least as long as they are displayed stacked.

file a feature request explaining how you would like the feature to be in
detail at:

https://github.com/darktable-org/darktable/issues/new?assignees=&labels=&template=feature_request.md&title=
 
> Can I do anything about the way duplicates are handled and metadata is
> stored? Any hint appreciated!

above and/or learn to work with darktable and forget about lightroom.
 
there are fine manuals explaining the darktable philosophy,
  https://www.darktable.org/

good luck,  
and sorry, but I believe you will find few here that want dt to perform in
the manner lightroom does.

-- 
(paka)Patrick Shanahan   Plainfield, Indiana, USA  @ptilopteri
http://en.opensuse.orgopenSUSE Community Memberfacebook/ptilopteri
Photos: http://wahoo.no-ip.org/piwigo   paka @ IRCnet freenode

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Re: [darktable-user] Handling of duplicates and storage of metadata

[Bernhard]

jot ess schrieb am 24.07.20 um 22:18:

- The setting not to ignore jpgs when importing is ignored. (Only raws
are imported, I copied jpgs by hand.)
The setting is "ignore jpeg" - so to import them you have to _uncheck_ 
the box



They generate one common xmp file for the raw file (name.xmp) and for
the jpg file they write metadata directly into the jpg. I believe this
is the expected behaviour of duplicates.
darktable treats imported pictures as originals and thus never writes 
into those files.

It also does not write into dng e. g.

This - by the way - makes backups a lot easier since you do not have to 
restore megabytes of a picture after changing a single keyword ...



- The way pictures are counted is confusing to me. I think duplicates
should be counted as 1 picture in the picture/selected picture count.
At least as long as they are displayed stacked.
It depends. A duplicate is also something you can edit and export 
independantly - it's another picture ...


--

regards
Bernhard

https://www.bilddateien.de


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Re: [darktable-user] Camera calibration profiles

[Mikael Ståldal]

I was quite happy with Lightroom 6 (which I have paid a license for). 
But I don't like Adobes new subscription based licensing model, and I 
would prefer to not have to use Windows (and I don't have a Mac).


I am trying out Darktable since it's open source, run native on Linux 
and is faster than Lightroom 6 in a VM with Windows.


It would be annoying to have to keep Lightroom around, since then I 
would also need to keep a Windows (virtual) machine around. I don't need 
that for anything else.



On 2020-07-24 22:10, Marc Sitkin wrote:

Mikael-

Darktable is not the same as Lightroom. I used Lightroom for many years 
(since it came out) and it does do what you say, you get a reasonable 
rendition pretty quickly with the various defaults and styles available.
LR also has good DAM capabilities. It's a great program for developing 
lots of images quickly and will suffice for most needs. Like all 
software, it has its strengths and weaknesses.


The closest I've gotten to building speed in darktable for shoots where 
most of the images need to be at least processed in a common manner is 
to process one, and build a history stack and using the lightable copy 
and paste commands, applying it  to a range of images. Individual images 
can then get tweaked before export.


Another alternative is to import your jpegs and work from there. In a 
lot of cases, you can get what you want without using the RAWs.
There are many images processed in Lightroom that still look perfectly 
fine after many years. But there are some that I've reprocessed in 
darktable and reprinted, and there are some stunning differences in the 
new prints. darktable is a powerful program offering greater control 
over individual images than Lightroom. You might want to give it a 
chance, and keep Lightroom around as well.

Enjoy!

On Fri, Jul 24, 2020 at 2:53 PM Patrick Shanahan > wrote:


* Mikael Ståldal mailto:mik...@staldal.nu>>
[07-24-20 13:50]:
 > That sounds quite complicated. I just want to be able to use the
profiles
 > that are built-in in my cameras. With Lightroom, I could extract
them with
 > Adobe DNG Profile Editor.
 >
 >
 > On 2020-07-24 12:16, KOVÁCS István wrote:
 > > On Fri, 24 Jul 2020 at 11:24, Mikael Ståldal mailto:mik...@staldal.nu>> wrote:
 > > > In Lightroom, I could apply camera calibration profiles to
make RAW
 > > > images look like JPEGs from from camera. And also chose between
 > > > different profiles from the camera (like portrait, landscape,
 > > > monochrome, vivid). Is it possible to do this in Darktable?
 > >
 > > You may find a ready-made style, but if not, you can make your own:
 > > https://pixls.us/articles/profiling-a-camera-with-darktable-chart/
 > > 'Either we fit to a JPEG generated by the camera, which can
also apply
 > > creative styles (such as film emulations, filters), or we profile
 > > against real color reproduction. For real color a color target
ships
 > > with a file providing the color values for each patch it has.
 > > In summary, we can create a profile that emulates the manufactures
 > > color processing inside the body, or we can create a profile that
 > > renders real color as accurately as possible.'

But you are not using lightroot now and everything is NOT the same.

-- 
(paka)Patrick Shanahan       Plainfield, Indiana, USA 
@ptilopteri
http://en.opensuse.org    openSUSE Community Member   
facebook/ptilopteri

Photos: http://wahoo.no-ip.org/piwigo               paka @ IRCnet
freenode

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--
Marc Sitkin
2020 Mexico Gallery 
Marc Sitkin Photography Web Site 
Instagram 

 
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[darktable-user] Handling of duplicates and storage of metadata

[jot ess]

Hello,
I'm new to darktable (coming from Lightroom 5.7) and I'm trying to
find a workflow that works for me. I usually shoot raw + jpg, then
import both from my camera, renaming them -MM-DD HH-MM ###.xxx as
I import and then I add geotags via gpx files.
(Camera: Lumix TZ101)

These are the problems I encountered while trying. Was it errors in
usage? Wrong expectations?

- The setting not to ignore jpgs when importing is ignored. (Only raws
are imported, I copied jpgs by hand.)
- When deleting/moving pictures while they are grouped (raw+jpg), only
the raw file is deleted/moved (although the confirmation question
shows the hint that duplicates are also moved - they aren't).
- The way of handling duplicates is incompatible with other software
(e.g. Adobe, GeoSetter) in that it generates separate xmp files
(name.jpg.xmp + name.raw.xmp) for duplicates. I don't know any other
software that is able to read this correctly, to understand what files
belong together.
They generate one common xmp file for the raw file (name.xmp) and for
the jpg file they write metadata directly into the jpg. I believe this
is the expected behaviour of duplicates.
- The way pictures are counted is confusing to me. I think duplicates
should be counted as 1 picture in the picture/selected picture count.
At least as long as they are displayed stacked.

Can I do anything about the way duplicates are handled and metadata is
stored? Any hint appreciated!

Best regards
Joachim

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Re: [darktable-user] Camera calibration profiles

[Marc Sitkin]

Mikael-

Darktable is not the same as Lightroom. I used Lightroom for many years
(since it came out) and it does do what you say, you get a reasonable
rendition pretty quickly with the various defaults and styles available.
LR also has good DAM capabilities. It's a great program for developing lots
of images quickly and will suffice for most needs. Like all software, it
has its strengths and weaknesses.

The closest I've gotten to building speed in darktable for shoots where
most of the images need to be at least processed in a common manner is to
process one, and build a history stack and using the lightable copy and
paste commands, applying it  to a range of images. Individual images can
then get tweaked before export.

Another alternative is to import your jpegs and work from there. In a lot
of cases, you can get what you want without using the RAWs.
There are many images processed in Lightroom that still look perfectly fine
after many years. But there are some that I've reprocessed in darktable and
reprinted, and there are some stunning differences in the new prints.
darktable is a powerful program offering greater control over individual
images than Lightroom. You might want to give it a chance, and keep
Lightroom around as well.
Enjoy!

On Fri, Jul 24, 2020 at 2:53 PM Patrick Shanahan  wrote:

> * Mikael Ståldal  [07-24-20 13:50]:
> > That sounds quite complicated. I just want to be able to use the profiles
> > that are built-in in my cameras. With Lightroom, I could extract them
> with
> > Adobe DNG Profile Editor.
> >
> >
> > On 2020-07-24 12:16, KOVÁCS István wrote:
> > > On Fri, 24 Jul 2020 at 11:24, Mikael Ståldal 
> wrote:
> > > > In Lightroom, I could apply camera calibration profiles to make RAW
> > > > images look like JPEGs from from camera. And also chose between
> > > > different profiles from the camera (like portrait, landscape,
> > > > monochrome, vivid). Is it possible to do this in Darktable?
> > >
> > > You may find a ready-made style, but if not, you can make your own:
> > > https://pixls.us/articles/profiling-a-camera-with-darktable-chart/
> > > 'Either we fit to a JPEG generated by the camera, which can also apply
> > > creative styles (such as film emulations, filters), or we profile
> > > against real color reproduction. For real color a color target ships
> > > with a file providing the color values for each patch it has.
> > > In summary, we can create a profile that emulates the manufactures
> > > color processing inside the body, or we can create a profile that
> > > renders real color as accurately as possible.'
>
> But you are not using lightroot now and everything is NOT the same.
>
> --
> (paka)Patrick Shanahan   Plainfield, Indiana, USA  @ptilopteri
> http://en.opensuse.orgopenSUSE Community Memberfacebook/ptilopteri
> Photos: http://wahoo.no-ip.org/piwigo   paka @ IRCnet freenode
>
> 
> darktable user mailing list
> to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
>
>

-- 
Marc Sitkin
2020 Mexico Gallery 
Marc Sitkin Photography Web Site 
Instagram 


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Re: [darktable-user] Camera calibration profiles

[Bill Martz]

It's very tempting to want to start with the jpg setup and modify from
there. Using the basecurve is as close as darktable will come for a raw.
You can always convert a jpg to a tif and edit that, but you are starting
with all the changes made to produce the jpg and cannot get back to what
was originally there.

darktable is used by people that want total creative freedom, and it is
designed to provide this while being accurate in making color changes
without mathematical distortions. Much work has been done to convert to
linear RGB by the developers. I suggest you search Pixil for Aurélien
Pierre, aurelienpierre, and read his latest posts. Also study Play Raw
posts, where you can download image files and the xmp files produced by
multiple posters and examine them. Boris Hajdukovic, s7habo, has produced a
ton of videos on editing with darktable. And so have many others. The whole
idea is to produce something better than the jpg.

On Fri, Jul 24, 2020 at 1:47 PM Mikael Ståldal  wrote:

> That sounds quite complicated. I just want to be able to use the
> profiles that are built-in in my cameras. With Lightroom, I could
> extract them with Adobe DNG Profile Editor.
>
>
> On 2020-07-24 12:16, KOVÁCS István wrote:
> > On Fri, 24 Jul 2020 at 11:24, Mikael Ståldal  wrote:
> >> In Lightroom, I could apply camera calibration profiles to make RAW
> >> images look like JPEGs from from camera. And also chose between
> >> different profiles from the camera (like portrait, landscape,
> >> monochrome, vivid). Is it possible to do this in Darktable?
> >
> > You may find a ready-made style, but if not, you can make your own:
> > https://pixls.us/articles/profiling-a-camera-with-darktable-chart/
> > 'Either we fit to a JPEG generated by the camera, which can also apply
> > creative styles (such as film emulations, filters), or we profile
> > against real color reproduction. For real color a color target ships
> > with a file providing the color values for each patch it has.
> > In summary, we can create a profile that emulates the manufactures
> > color processing inside the body, or we can create a profile that
> > renders real color as accurately as possible.'
> >
> > Kofa
> >
> 
> > darktable user mailing list
> > to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
> >
>
> 
> darktable user mailing list
> to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
>
>


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Re: [darktable-user] Camera calibration profiles

[Patrick Shanahan]

* Mikael Ståldal  [07-24-20 13:50]:
> That sounds quite complicated. I just want to be able to use the profiles
> that are built-in in my cameras. With Lightroom, I could extract them with
> Adobe DNG Profile Editor.
> 
> 
> On 2020-07-24 12:16, KOVÁCS István wrote:
> > On Fri, 24 Jul 2020 at 11:24, Mikael Ståldal  wrote:
> > > In Lightroom, I could apply camera calibration profiles to make RAW
> > > images look like JPEGs from from camera. And also chose between
> > > different profiles from the camera (like portrait, landscape,
> > > monochrome, vivid). Is it possible to do this in Darktable?
> > 
> > You may find a ready-made style, but if not, you can make your own:
> > https://pixls.us/articles/profiling-a-camera-with-darktable-chart/
> > 'Either we fit to a JPEG generated by the camera, which can also apply
> > creative styles (such as film emulations, filters), or we profile
> > against real color reproduction. For real color a color target ships
> > with a file providing the color values for each patch it has.
> > In summary, we can create a profile that emulates the manufactures
> > color processing inside the body, or we can create a profile that
> > renders real color as accurately as possible.'

But you are not using lightroot now and everything is NOT the same.

-- 
(paka)Patrick Shanahan   Plainfield, Indiana, USA  @ptilopteri
http://en.opensuse.orgopenSUSE Community Memberfacebook/ptilopteri
Photos: http://wahoo.no-ip.org/piwigo   paka @ IRCnet freenode

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[darktable-user] Directory name when importing from camera

[Mikael Ståldal]

Is it possible to specify the directory name each time I import from 
camera?


I have found the Session Options, but I would like to specify an 
arbitrary name each time.


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Re: [darktable-user] Automatically enable module on import

[Mikael Ståldal]

Ah, that works. Thanks!


On 2020-07-24 19:50, Guillermo Rozas wrote:
You want auto-applied presets: 
https://www.darktable.org/usermanual/en/presets.html


On Fri, Jul 24, 2020 at 2:49 PM Mikael Ståldal > wrote:


How can I automatically enable Lens Correction module when importing?

Or more general, how can I automatically enable a particular module
when
importing?

(I have tried to find this in the manual, but couldn't.)

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Re: [darktable-user] Automatically enable module on import

[Guillermo Rozas]

You want auto-applied presets:
https://www.darktable.org/usermanual/en/presets.html

On Fri, Jul 24, 2020 at 2:49 PM Mikael Ståldal  wrote:

> How can I automatically enable Lens Correction module when importing?
>
> Or more general, how can I automatically enable a particular module when
> importing?
>
> (I have tried to find this in the manual, but couldn't.)
>
> 
> darktable user mailing list
> to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
>
>


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[darktable-user] Automatically enable module on import

[Mikael Ståldal]

How can I automatically enable Lens Correction module when importing?

Or more general, how can I automatically enable a particular module when 
importing?


(I have tried to find this in the manual, but couldn't.)

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Re: [darktable-user] Camera calibration profiles

[Mikael Ståldal]

That sounds quite complicated. I just want to be able to use the 
profiles that are built-in in my cameras. With Lightroom, I could 
extract them with Adobe DNG Profile Editor.



On 2020-07-24 12:16, KOVÁCS István wrote:

On Fri, 24 Jul 2020 at 11:24, Mikael Ståldal  wrote:

In Lightroom, I could apply camera calibration profiles to make RAW
images look like JPEGs from from camera. And also chose between
different profiles from the camera (like portrait, landscape,
monochrome, vivid). Is it possible to do this in Darktable?


You may find a ready-made style, but if not, you can make your own:
https://pixls.us/articles/profiling-a-camera-with-darktable-chart/
'Either we fit to a JPEG generated by the camera, which can also apply
creative styles (such as film emulations, filters), or we profile
against real color reproduction. For real color a color target ships
with a file providing the color values for each patch it has.
In summary, we can create a profile that emulates the manufactures
color processing inside the body, or we can create a profile that
renders real color as accurately as possible.'

Kofa

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[darktable-user] How is initial content of history stack built?

[tony Hamilton]

Can somebody please explain to me what controls the content of the 
history panel for a newly imported image, newly opened in the darkroom? 
Or, in other words, what factors determine what modules appear in the 
history stack on such an image before I have started to do anything?


I also want to understand how the ‘property’, (as indicated by the tiny 
icon shown to the right of each named module in the stack), is set or 
determined. By ‘property’ I mean the choice of ‘always-on module’, 
‘default enabled module’ or ‘’. The icons for these last two 
properties are indistinguishable on my system.


The reason I ask is that 1 module’s appearance in a newly 
imported/opened image grabs my attention: monochrome. Why is that there? 
And it makes a difference, causing a ‘rash’ of mid-grey pixels to appear 
in the sky in this particular image. If I ‘reset’ the history to the 
step before ‘monochrome’ this rash disappears. What is going on here?



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Re: [darktable-user] How is initial content of history stack built?

[Patrick Shanahan]

* tony Hamilton  [07-24-20 08:09]:
> Can somebody please explain to me what controls the content of the history
> panel for a newly imported image, newly opened in the darkroom? Or, in other
> words, what factors determine what modules appear in the history stack on
> such an image before I have started to do anything?
> 
> I also want to understand how the ‘property’, (as indicated by the tiny icon
> shown to the right of each named module in the stack), is set or determined.
> By ‘property’ I mean the choice of ‘always-on module’, ‘default enabled
> module’ or ‘’. The icons for these last two properties are
> indistinguishable on my system.
> 
> The reason I ask is that 1 module’s appearance in a newly imported/opened
> image grabs my attention: monochrome. Why is that there? And it makes a
> difference, causing a ‘rash’ of mid-grey pixels to appear in the sky in this
> particular image. If I ‘reset’ the history to the step before ‘monochrome’
> this rash disappears. What is going on here?

Just guessing from your recent posting you have adjusted a preset or and
import style to always apply "monocrome".

You may partially test this by starting dt from the command line as:
  darktable --library :memory: 
open an image which displayed your "rash" 
in darkroom mode look at history in left panel

you should see something like:
 4 orentation
 3 display encoding
 2 output color profile
 1 input color profile
 0 original


any other entries such as "monocrone" would be due to you setting them
deliberately.

note that the list may be different for different cameras (I don't know)
but this is what I see importing a new image with default configuration.

I suggest that from your multitude of problems that you begin with a new
install and new configurations, library, ... , and do your own tests.

*** and read the fine manual *** 

 
-- 
(paka)Patrick Shanahan   Plainfield, Indiana, USA  @ptilopteri
http://en.opensuse.orgopenSUSE Community Memberfacebook/ptilopteri
Photos: http://wahoo.no-ip.org/piwigo   paka @ IRCnet freenode

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Re: [darktable-user] Camera calibration profiles

[KOVÁCS István]

On Fri, 24 Jul 2020 at 11:24, Mikael Ståldal  wrote:
> In Lightroom, I could apply camera calibration profiles to make RAW
> images look like JPEGs from from camera. And also chose between
> different profiles from the camera (like portrait, landscape,
> monochrome, vivid). Is it possible to do this in Darktable?

You may find a ready-made style, but if not, you can make your own:
https://pixls.us/articles/profiling-a-camera-with-darktable-chart/
'Either we fit to a JPEG generated by the camera, which can also apply
creative styles (such as film emulations, filters), or we profile
against real color reproduction. For real color a color target ships
with a file providing the color values for each patch it has.
In summary, we can create a profile that emulates the manufactures
color processing inside the body, or we can create a profile that
renders real color as accurately as possible.'

Kofa

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Re: [darktable-user] Camera calibration profiles

[Remco Viëtor]

On vendredi 24 juillet 2020 11:15:26 CEST Mikael Ståldal wrote:
> I have been using Adobe Lightroom 6 for quite some time, and now I am
> trying to switch to Darktable.
> 
> In Lightroom, I could apply camera calibration profiles to make RAW
> images look like JPEGs from from camera. And also chose between
> different profiles from the camera (like portrait, landscape,
> monochrome, vivid). Is it possible to do this in Darktable?

In darktable, you can use the different basecurve presets for that (only for 
the "standard" rendering, afaik). There are some options in the settings 
dialog for that.

But keep in mind that, although using the basecurve rendering gives a quick 
and reasonable result, it has disadvantages. I lose about 1 stop in the 
highlights using the standard basecurve for my Sony camera. Also, it can be 
much harder to get a decent result if the image needs extensive adjustments.

Remco



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Re: [darktable-user] How is initial content of history stack built?

[KOVÁCS István]

On Fri, 24 Jul 2020 at 11:29, tony Hamilton  wrote:
>
> The reason I ask is that 1 module’s appearance in a newly
> imported/opened image grabs my attention: monochrome. Why is that there?
> And it makes a difference, causing a ‘rash’ of mid-grey pixels to appear
> in the sky in this particular image. If I ‘reset’ the history to the
> step before ‘monochrome’ this rash disappears. What is going on here?

Monochrome turns the whole image B/W, unless it's applied with a mask.
Am I mistaken, or were you trying to get monochrome applied
automatically just a week or so ago? Maybe there's a connection?
https://www.mail-archive.com/darktable-user@lists.darktable.org/msg09426.html

Kofa

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[darktable-user] Camera calibration profiles

[Mikael Ståldal]

I have been using Adobe Lightroom 6 for quite some time, and now I am 
trying to switch to Darktable.


In Lightroom, I could apply camera calibration profiles to make RAW 
images look like JPEGs from from camera. And also chose between 
different profiles from the camera (like portrait, landscape, 
monochrome, vivid). Is it possible to do this in Darktable?


My cameras are Sony RX-100 VA and Sony A-6300.

(This is about colors, not about lens correction.)

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