Re: [darktable-user] Filmic RGB and colors

[KOVÁCS István]

Hi,

On Tue, 28 Jul 2020, 07:17 Jan Ingwer Baer,  wrote:

> I am a little bit confused about Filmic RGB and the handling of colors:
>
> On many/most of my pictures using filmic rgb with the default value for
> 'preserve chrominance' (= 'RGB power norm') makes the colors very flat.
> After switching the 'preserve chrominance' to 'no' the colors are back.
> But on some pictures, it is reversed: The default value gives nice
> colors, but switching to 'no' makes flat colors. Can anybody explain
> this behavior to me?
>

Yes, colours may get desaturated (3.2 will improve on that), and the
algorithm that works best may vary.

You may want to try the style demonstrated by darktable developer Aurélien
Pierre here:
https://youtu.be/vP5m1YmSRw8

Check out his other tutorials as well, and read some filmic discussion on
pixls.us.

Kofa

>


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[darktable-user] Filmic RGB and colors

[Jan Ingwer Baer]

I am a little bit confused about Filmic RGB and the handling of colors:

On many/most of my pictures using filmic rgb with the default value for
'preserve chrominance' (= 'RGB power norm') makes the colors very flat.
After switching the 'preserve chrominance' to 'no' the colors are back.
But on some pictures, it is reversed: The default value gives nice
colors, but switching to 'no' makes flat colors. Can anybody explain
this behavior to me?



I am using DT 3.0.0 on Win10.

Regards
Jan

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Re: [darktable-user] Camera calibration profiles

[KOVÁCS István]

On Mon, 27 Jul 2020, 19:04 Mikael Ståldal,  wrote:

> I have some (binary) DCP files from Lightroom. Is it possible to use
> them in Darktable somehow?
>

DCP files are not supported, I think. You can extract the colour matrix
into an ICC, and put it in the input profiles directory (I'm not at my
computer, please check the manual), and select it in the input profile
module. If the DCP also contains curves, you won't be able to use those.
RawTherapee and probably ART provide better DCP support.

Note, though, that if the DCP files come with Lightroom, you'll need a
licence to use them, if such use outside Lr is legal at all (which I doubt).

Kofa


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Re: [darktable-user] Base curve

[Terry Pinfold]

Can I suggest two ways to minimise or avoid artifacts from shadow/highlights 
module.

  1.  Switch between soften with Gaussian or soften with bilateral and compare 
the difference
  2.  Use two or more instances of shadows/highlights module with smaller 
adjustments rather than a single use of shadow/highlights with a large 
adjustment.

Both of these methods have helped me avoid the dread halo effects.

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: David Vincent-Jones 
Sent: Tuesday, 28 July 2020 5:24 AM
To: darktable-user@lists.darktable.org 
Subject: Re: [darktable-user] Base curve


I do agree that I still have a need for some tonal adjustment after using 
filmic (which is now my default path). The lack of highlight detail/contrast 
... most often in the sky or snow texture  is where I have the greatest 
difficulty. I still resort to using the highlight-shadows module despite severe 
artifact problems.

For my taste, I also find that images need added saturation after filmic. I do 
find that adding the middle-tone-saturation (under the 'look' tab) is very 
helpful and solves most problems  generally I stay away from velvia.

David

On 2020-07-27 10:38 a.m., Jason Polak wrote:

This is just a comment on the filmic module. I like it actually over the
base curve but I still find the need to adjust certain tones,
emphasizing them with the tone curve. I don't think that will change.
The filmic adjustments are often too coarse.

Also, for some reason, compared to using darktable 2.4 a long time ago
with base curve/tone curve, after using filmic in darktable 3 my images
seem to be quite desaturated. I usually activate velvia and tweak
colours either using saturation or color zones to generate something
that I would consider more accurate.

I probbaly am not using the most efficient workflow, but actually I am
quite fast at darktable having used it for 5 years as by first Raw
developer, but I was just wondering if other people are using a
different workflow when it comes to improving saturation after using filmic.

Jason

On 27/7/20 12:51 pm, David Vincent-Jones wrote:


After you have read the replies to your initial question, I am sure that
you must be quite confused. Let me try to more correctly find an answer
that may make sense.

There are two possible development 'routes' in darktable. 1.) uses the
'base curve';  2.) uses the 'filmic-rgb' module.

If you use the base-curve approach .. this module designed to
approximate a camera jpg and is not normally modified by the uses. If
you wish to modify the effects of the base-curve then you should be
using the tone-curve to make corrections as needed.

Patrick has been advocating that you use the filmic-rgb approach (a more
recent darktable development); in which case the base-curve should be
switched off totally and then all/most of the adjustment will be done
within filmic-rgb.

I would strongly recommend that you familiarize these processes through
the excellent manual or the numerous videos that are available on-line.

David

On 2020-07-27 8:18 a.m., Patrick Shanahan wrote:


* Mikael Ståldal  [07-27-20 10:50]:


I use Darktable 3.0.2 (the latest version as far as I know).

I have read about the base curve module in the user manual. I understand the
mechanics about changing the curve, but the whole concept is very abstract
to me.


On 2020-07-27 16:26, Patrick Shanahan wrote:


* Mikael Ståldal  [07-27-20 10:16]:


I have enabled the base curve with preset "sony alpha like" (since I have
Sony cameras), and that is better than without.

But I have a hard time understanding how to manually edit the base curve in
a useful way. I can edit it, and I see how the image changes, but it feels
quite random to me. I don't know what to do to get the result I want.

Most of the presets are for specific camera makers, so it's hard to know
which one to chose. Does it even make sense to use a preset for another
camera than the one taking the photo?


On 2020-07-26 00:55, Terry Pinfold wrote:


·A base curve is applied automatically but if you look in the preset
options you may find another you prefer. You can also create your own
for future use.


you don't say what version dt you employe but a better approach would be
to enable filmic and follow:
   
https://discuss.pixls.us/t/darktable-3-0-for-dummies-in-3-modules/15849

as advised in this thread.


about base curve:
  
https://www.darktable.org/usermanual/en/modules.html
  3.4.1.4.Base curve

fwiw, I have filmic enabled.



aiui, base curve matched exactly to your camera/model is an effort to display
a basically acceptable jpg image "resembling" but not matching your
"basic" ooc image.

Re: [darktable-user] Base curve

[Terry Pinfold]

Hi  Mikael,
these presets are just a starting point not the not point. When I used
LR I just let the default Adobe Standard be the picture style that started
the editing process. Once I started changing the image with all of LRs
sliders the starting point was no longer relevant as I had modified the
image. That is the reason I never started off selecting camera profile
styles in LR. I only mention LR because I know you have previously used LR.

Some people actually prefer to open up the base curve module in DT and
click on the reset parameters icon. This makes the base curve go to a
straight line or turn off the base curve module which is equivalent. Then
they feel in total control of processing their image. While typing this
email I opened up an image and turned off the base curve module. I then
opened up the RGB curves module and tweaked the image how I felt it needed
the curves to be adjusted. Magic. The image looked so much better than the
base curve default. So while writing this email I have revised what I will
do in future. Why let a base curve preset define the starting point. I have
now tried this RGB curves method on an underexposed dark image and an
overexposed light image. I have rapidly got a good starting point for
processing these images. With the dark image I had to open up the shadows
by brightening and with the light image I had to reduce the shadows to make
them look darker and of course balance the highlights. Seems this will be
my new method.

Of course some users would recommend the excellent and powerful RGB Filmic
to start the processing. I would suggest leaving this module till you are
more comfortable with DT. It is an excellent module but requires patience
to watch the videos and learn how it works.

Hope this helps Mikael.

On Tue, 28 Jul 2020 at 00:26, Patrick Shanahan  wrote:

> * Mikael Ståldal  [07-27-20 10:16]:
> > I have enabled the base curve with preset "sony alpha like" (since I have
> > Sony cameras), and that is better than without.
> >
> > But I have a hard time understanding how to manually edit the base curve
> in
> > a useful way. I can edit it, and I see how the image changes, but it
> feels
> > quite random to me. I don't know what to do to get the result I want.
> >
> > Most of the presets are for specific camera makers, so it's hard to know
> > which one to chose. Does it even make sense to use a preset for another
> > camera than the one taking the photo?
> >
> >
> > On 2020-07-26 00:55, Terry Pinfold wrote:
> > > ·A base curve is applied automatically but if you look in the preset
> > > options you may find another you prefer. You can also create your own
> > > for future use.
>
> you don't say what version dt you employe but a better approach would be
> to enable filmic and follow:
>   https://discuss.pixls.us/t/darktable-3-0-for-dummies-in-3-modules/15849
>
> as advised in this thread.
>
>
> about base curve:
>  https://www.darktable.org/usermanual/en/modules.html
>  3.4.1.4.Base curve
>
> fwiw, I have filmic enabled.
>
> --
> (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
>
>

-- 
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] Base curve

[Šarūnas]

On 7/27/20 12:50 PM, Pascal Obry wrote:
> Le lundi 27 juillet 2020 à 09:51 -0700, David Vincent-Jones a écrit
> :
>> After you have read the replies to your initial question, I am
>> sure that you must be quite confused. Let me try to more correctly
>> find an answer that may make sense.
>> 
>> There are two possible development 'routes' in darktable. 1.) uses 
>> the 'base curve';  2.) uses the 'filmic-rgb' module.
> 
> And a third one... Nothing, no base curve, no filmic.

I mostly stopped applying base curve long ago, before filmic existed. I
don't use filmic either (except for following a tutorial once and
several image tests).

Typical list, besides always-on modules, is: levels, color zones, local
contrast, denoise, sharpening.

-- 
Šarūnas Burdulis
math.dartmouth.edu/~sarunas

· https://useplaintext.email ·



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Description: OpenPGP digital signature

Re: [darktable-user] File name on print

[Willy Williams]

You could embed a watermark on the photo and position it such that it's 
visible, but out of the way.


Willy Williams

--

 "You don't take a picture.  You ask quietly and humbly to borrow it."

 - Unknown

--

On 7/27/20 2:47 PM, Kent Tenney wrote:

Howdy,

I've come to like the Shotwell feature of adding the
filename below the image on a print. Very useful
for locating the file of a proof print.

Is there a way to configure Darktable, or an extension
which would offer this feature?

Thanks,
Kent

 
darktable user mailing list to unsubscribe send a mail to 
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Re: [darktable-user] File name on print

[Kent Tenney]

Nice, thanks!

On Mon, Jul 27, 2020 at 2:04 PM William Ferguson 
wrote:

> Create a style using framing to put a white border around the image and
> then the watermark module with simple text selected and $(FILE_NAME) as the
> text.  Adjust scaling and position.  Save the style as proof print or
> whatever, then apply it on export to create your proof print.
>
> On Mon, Jul 27, 2020 at 2:48 PM Kent Tenney  wrote:
>
>> Howdy,
>>
>> I've come to like the Shotwell feature of adding the
>> filename below the image on a print. Very useful
>> for locating the file of a proof print.
>>
>> Is there a way to configure Darktable, or an extension
>> which would offer this feature?
>>
>> Thanks,
>> Kent
>>
>> 
>> darktable user mailing list to unsubscribe send a mail to
>> darktable-user+unsubscr...@lists.darktable.org
>>
>


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Re: [darktable-user] Base curve

[David Vincent-Jones]

I do agree that I still have a need for some tonal adjustment after 
using filmic (which is now my default path). The lack of highlight 
detail/contrast ... most often in the sky or snow texture  is where 
I have the greatest difficulty. I still resort to using the 
highlight-shadows module despite severe artifact problems.


For my taste, I also find that images need added saturation after 
filmic. I do find that adding the middle-tone-saturation (under the 
'look' tab) is very helpful and solves most problems  generally I 
stay away from velvia.


David

On 2020-07-27 10:38 a.m., Jason Polak wrote:

This is just a comment on the filmic module. I like it actually over the
base curve but I still find the need to adjust certain tones,
emphasizing them with the tone curve. I don't think that will change.
The filmic adjustments are often too coarse.

Also, for some reason, compared to using darktable 2.4 a long time ago
with base curve/tone curve, after using filmic in darktable 3 my images
seem to be quite desaturated. I usually activate velvia and tweak
colours either using saturation or color zones to generate something
that I would consider more accurate.

I probbaly am not using the most efficient workflow, but actually I am
quite fast at darktable having used it for 5 years as by first Raw
developer, but I was just wondering if other people are using a
different workflow when it comes to improving saturation after using filmic.

Jason

On 27/7/20 12:51 pm, David Vincent-Jones wrote:

After you have read the replies to your initial question, I am sure that
you must be quite confused. Let me try to more correctly find an answer
that may make sense.

There are two possible development 'routes' in darktable. 1.) uses the
'base curve';  2.) uses the 'filmic-rgb' module.

If you use the base-curve approach .. this module designed to
approximate a camera jpg and is not normally modified by the uses. If
you wish to modify the effects of the base-curve then you should be
using the tone-curve to make corrections as needed.

Patrick has been advocating that you use the filmic-rgb approach (a more
recent darktable development); in which case the base-curve should be
switched off totally and then all/most of the adjustment will be done
within filmic-rgb.

I would strongly recommend that you familiarize these processes through
the excellent manual or the numerous videos that are available on-line.

David

On 2020-07-27 8:18 a.m., Patrick Shanahan wrote:

* Mikael Ståldal  [07-27-20 10:50]:

I use Darktable 3.0.2 (the latest version as far as I know).

I have read about the base curve module in the user manual. I understand the
mechanics about changing the curve, but the whole concept is very abstract
to me.


On 2020-07-27 16:26, Patrick Shanahan wrote:

* Mikael Ståldal  [07-27-20 10:16]:

I have enabled the base curve with preset "sony alpha like" (since I have
Sony cameras), and that is better than without.

But I have a hard time understanding how to manually edit the base curve in
a useful way. I can edit it, and I see how the image changes, but it feels
quite random to me. I don't know what to do to get the result I want.

Most of the presets are for specific camera makers, so it's hard to know
which one to chose. Does it even make sense to use a preset for another
camera than the one taking the photo?


On 2020-07-26 00:55, Terry Pinfold wrote:

·A base curve is applied automatically but if you look in the preset
options you may find another you prefer. You can also create your own
for future use.

you don't say what version dt you employe but a better approach would be
to enable filmic and follow:
https://discuss.pixls.us/t/darktable-3-0-for-dummies-in-3-modules/15849

as advised in this thread.


about base curve:
   https://www.darktable.org/usermanual/en/modules.html
   3.4.1.4.Base curve

fwiw, I have filmic enabled.


aiui, base curve matched exactly to your camera/model is an effort to display
a basically acceptable jpg image "resembling" but not matching your
"basic" ooc image.  imnsho, you would be better served employing filmic
and disabling base curve.




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Re: [darktable-user] File name on print

[William Ferguson]

Create a style using framing to put a white border around the image and
then the watermark module with simple text selected and $(FILE_NAME) as the
text.  Adjust scaling and position.  Save the style as proof print or
whatever, then apply it on export to create your proof print.

On Mon, Jul 27, 2020 at 2:48 PM Kent Tenney  wrote:

> Howdy,
>
> I've come to like the Shotwell feature of adding the
> filename below the image on a print. Very useful
> for locating the file of a proof print.
>
> Is there a way to configure Darktable, or an extension
> which would offer this feature?
>
> Thanks,
> Kent
>
> 
> darktable user mailing list to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
>


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[darktable-user] File name on print

[Kent Tenney]

Howdy,

I've come to like the Shotwell feature of adding the
filename below the image on a print. Very useful
for locating the file of a proof print.

Is there a way to configure Darktable, or an extension
which would offer this feature?

Thanks,
Kent


darktable user mailing list
to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org

Re: [darktable-user] Base curve

[Jason Polak]

This is just a comment on the filmic module. I like it actually over the
base curve but I still find the need to adjust certain tones,
emphasizing them with the tone curve. I don't think that will change.
The filmic adjustments are often too coarse.

Also, for some reason, compared to using darktable 2.4 a long time ago
with base curve/tone curve, after using filmic in darktable 3 my images
seem to be quite desaturated. I usually activate velvia and tweak
colours either using saturation or color zones to generate something
that I would consider more accurate.

I probbaly am not using the most efficient workflow, but actually I am
quite fast at darktable having used it for 5 years as by first Raw
developer, but I was just wondering if other people are using a
different workflow when it comes to improving saturation after using filmic.

Jason

On 27/7/20 12:51 pm, David Vincent-Jones wrote:
> After you have read the replies to your initial question, I am sure that
> you must be quite confused. Let me try to more correctly find an answer
> that may make sense.
> 
> There are two possible development 'routes' in darktable. 1.) uses the
> 'base curve';  2.) uses the 'filmic-rgb' module.
> 
> If you use the base-curve approach .. this module designed to
> approximate a camera jpg and is not normally modified by the uses. If
> you wish to modify the effects of the base-curve then you should be
> using the tone-curve to make corrections as needed.
> 
> Patrick has been advocating that you use the filmic-rgb approach (a more
> recent darktable development); in which case the base-curve should be
> switched off totally and then all/most of the adjustment will be done
> within filmic-rgb.
> 
> I would strongly recommend that you familiarize these processes through
> the excellent manual or the numerous videos that are available on-line.
> 
> David
> 
> On 2020-07-27 8:18 a.m., Patrick Shanahan wrote:
>> * Mikael Ståldal  [07-27-20 10:50]:
>>> I use Darktable 3.0.2 (the latest version as far as I know).
>>>
>>> I have read about the base curve module in the user manual. I understand the
>>> mechanics about changing the curve, but the whole concept is very abstract
>>> to me.
>>>
>>>
>>> On 2020-07-27 16:26, Patrick Shanahan wrote:
 * Mikael Ståldal  [07-27-20 10:16]:
> I have enabled the base curve with preset "sony alpha like" (since I have
> Sony cameras), and that is better than without.
>
> But I have a hard time understanding how to manually edit the base curve 
> in
> a useful way. I can edit it, and I see how the image changes, but it feels
> quite random to me. I don't know what to do to get the result I want.
>
> Most of the presets are for specific camera makers, so it's hard to know
> which one to chose. Does it even make sense to use a preset for another
> camera than the one taking the photo?
>
>
> On 2020-07-26 00:55, Terry Pinfold wrote:
>> ·A base curve is applied automatically but if you look in the preset
>> options you may find another you prefer. You can also create your own
>> for future use.
 you don't say what version dt you employe but a better approach would be
 to enable filmic and follow:
https://discuss.pixls.us/t/darktable-3-0-for-dummies-in-3-modules/15849

 as advised in this thread.


 about base curve:
   https://www.darktable.org/usermanual/en/modules.html
   3.4.1.4.Base curve

 fwiw, I have filmic enabled.

>> aiui, base curve matched exactly to your camera/model is an effort to display
>> a basically acceptable jpg image "resembling" but not matching your
>> "basic" ooc image.  imnsho, you would be better served employing filmic
>> and disabling base curve.
>>
>>
> 
> 
> 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

[Mikael Ståldal]

I have some (binary) DCP files from Lightroom. Is it possible to use 
them in Darktable somehow?



On 2020-07-26 20:13, I. Ivanov wrote:


On 7/24/20 10:46, 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.



If you "really" want to reproduce what the camera JPG produces - you can 
try the following


- the camera manufacturer includes a program to manipulate the images
- this program includes .ICC profiles - for example - Canon includes 
PS.ICC for (Portrait SRGB), PA.ICC (for Portrait Adobe RGB) and so on.

- take these profiles and place them in /$HOME/.config/darktable/color/in
- then use them as "input color profile" from within the input color 
profile module
- most likely you will want to activate "unbreak input profile module" 
and also adjust the sliders in it and brightens / contrast saturation 
module.


Now the more important questions - do I recommend it, do I use it?

No. I don't use it.

In my opinion - DT has way better tools and as the others suggested you 
can achieve much better results than the .jpg


In my opinion - for beginner this is a good resource

https://www.youtube.com/user/audio2u
Bruce is very detailed in explaining the various modules.

I started with the tutorials from Robert Hutton
https://www.youtube.com/user/rhutton86
and even they are older I still find a lot of value in them.

If you really want to go in deep details why things are constructed the 
way they are
Check the videos of Aurélien PIERRE. A note of caution however. These 
can require patience to comprehend because they are from developer's 
point of view.

https://www.youtube.com/channel/UCmsSn3fujI81EKEr4NLxrcg

Last but not least - the manual. It is actually very good!

https://darktable.gitlab.io/doc/en/

Hope this helps...

Regards,

B

 


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Re: [darktable-user] Base curve

[Pascal Obry]

Le lundi 27 juillet 2020 à 09:51 -0700, David Vincent-Jones a écrit :
> After you have read the replies to your initial question, I am sure
> that you must be quite confused. Let me try to more correctly find an
> answer that may make sense.
> 
> There are two possible development 'routes' in darktable. 1.) uses
> the 'base curve';  2.) uses the 'filmic-rgb' module.

And a third one... Nothing, no base curve, no filmic.
 
-- 
  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] Base curve

[David Vincent-Jones]

After you have read the replies to your initial question, I am sure that 
you must be quite confused. Let me try to more correctly find an answer 
that may make sense.


There are two possible development 'routes' in darktable. 1.) uses the 
'base curve'; 2.) uses the 'filmic-rgb' module.


If you use the base-curve approach .. this module designed to 
approximate a camera jpg and is not normally modified by the uses. If 
you wish to modify the effects of the base-curve then you should be 
using the tone-curve to make corrections as needed.


Patrick has been advocating that you use the filmic-rgb approach (a more 
recent darktable development); in which case the base-curve should be 
switched off totally and then all/most of the adjustment will be done 
within filmic-rgb.


I would strongly recommend that you familiarize these processes through 
the excellent manual or the numerous videos that are available on-line.


David

On 2020-07-27 8:18 a.m., Patrick Shanahan wrote:

* Mikael Ståldal  [07-27-20 10:50]:

I use Darktable 3.0.2 (the latest version as far as I know).

I have read about the base curve module in the user manual. I understand the
mechanics about changing the curve, but the whole concept is very abstract
to me.


On 2020-07-27 16:26, Patrick Shanahan wrote:

* Mikael Ståldal  [07-27-20 10:16]:

I have enabled the base curve with preset "sony alpha like" (since I have
Sony cameras), and that is better than without.

But I have a hard time understanding how to manually edit the base curve in
a useful way. I can edit it, and I see how the image changes, but it feels
quite random to me. I don't know what to do to get the result I want.

Most of the presets are for specific camera makers, so it's hard to know
which one to chose. Does it even make sense to use a preset for another
camera than the one taking the photo?


On 2020-07-26 00:55, Terry Pinfold wrote:

·A base curve is applied automatically but if you look in the preset
options you may find another you prefer. You can also create your own
for future use.

you don't say what version dt you employe but a better approach would be
to enable filmic and follow:
https://discuss.pixls.us/t/darktable-3-0-for-dummies-in-3-modules/15849

as advised in this thread.


about base curve:
   https://www.darktable.org/usermanual/en/modules.html
   3.4.1.4.Base curve

fwiw, I have filmic enabled.



aiui, base curve matched exactly to your camera/model is an effort to display
a basically acceptable jpg image "resembling" but not matching your
"basic" ooc image.  imnsho, you would be better served employing filmic
and disabling base curve.





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Re: [darktable-user] Base curve

[Patrick Shanahan]

* Mikael Ståldal  [07-27-20 10:50]:
> I use Darktable 3.0.2 (the latest version as far as I know).
> 
> I have read about the base curve module in the user manual. I understand the
> mechanics about changing the curve, but the whole concept is very abstract
> to me.
> 
> 
> On 2020-07-27 16:26, Patrick Shanahan wrote:
> > * Mikael Ståldal  [07-27-20 10:16]:
> > > I have enabled the base curve with preset "sony alpha like" (since I have
> > > Sony cameras), and that is better than without.
> > > 
> > > But I have a hard time understanding how to manually edit the base curve 
> > > in
> > > a useful way. I can edit it, and I see how the image changes, but it feels
> > > quite random to me. I don't know what to do to get the result I want.
> > > 
> > > Most of the presets are for specific camera makers, so it's hard to know
> > > which one to chose. Does it even make sense to use a preset for another
> > > camera than the one taking the photo?
> > > 
> > > 
> > > On 2020-07-26 00:55, Terry Pinfold wrote:
> > > > ·A base curve is applied automatically but if you look in the preset
> > > > options you may find another you prefer. You can also create your own
> > > > for future use.
> > 
> > you don't say what version dt you employe but a better approach would be
> > to enable filmic and follow:
> >https://discuss.pixls.us/t/darktable-3-0-for-dummies-in-3-modules/15849
> > 
> > as advised in this thread.
> > 
> > 
> > about base curve:
> >   https://www.darktable.org/usermanual/en/modules.html
> >   3.4.1.4.Base curve
> > 
> > fwiw, I have filmic enabled.
> > 


aiui, base curve matched exactly to your camera/model is an effort to display
a basically acceptable jpg image "resembling" but not matching your
"basic" ooc image.  imnsho, you would be better served employing filmic
and disabling base curve.


-- 
(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] Base curve

[Mikael Ståldal]

I use Darktable 3.0.2 (the latest version as far as I know).

I have read about the base curve module in the user manual. I understand 
the mechanics about changing the curve, but the whole concept is very 
abstract to me.



On 2020-07-27 16:26, Patrick Shanahan wrote:

* Mikael Ståldal  [07-27-20 10:16]:

I have enabled the base curve with preset "sony alpha like" (since I have
Sony cameras), and that is better than without.

But I have a hard time understanding how to manually edit the base curve in
a useful way. I can edit it, and I see how the image changes, but it feels
quite random to me. I don't know what to do to get the result I want.

Most of the presets are for specific camera makers, so it's hard to know
which one to chose. Does it even make sense to use a preset for another
camera than the one taking the photo?


On 2020-07-26 00:55, Terry Pinfold wrote:

·A base curve is applied automatically but if you look in the preset
options you may find another you prefer. You can also create your own
for future use.


you don't say what version dt you employe but a better approach would be
to enable filmic and follow:
   https://discuss.pixls.us/t/darktable-3-0-for-dummies-in-3-modules/15849

as advised in this thread.


about base curve:
  https://www.darktable.org/usermanual/en/modules.html
  3.4.1.4.Base curve

fwiw, I have filmic enabled.



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Re: [darktable-user] Base curve

[Bernhard]

Mikael Ståldal schrieb am 27.07.20 um 16:12:
I have enabled the base curve with preset "sony alpha like" (since I 
have Sony cameras), and that is better than without.


But I have a hard time understanding how to manually edit the base 
curve in a useful way. I can edit it, and I see how the image changes, 
but it feels quite random to me. I don't know what to do to get the 
result I want.


Most of the presets are for specific camera makers, so it's hard to 
know which one to chose. Does it even make sense to use a preset for 
another camera than the one taking the photo?



On 2020-07-26 00:55, Terry Pinfold wrote:
·A base curve is applied automatically but if you look in the preset 
options you may find another you prefer. You can also create your own 
for future use.

This is about basecurves:
https://www.darktable.org/2013/10/about-basecurves/

In short: base-curves have been created by comparing a RAW with a JPEG 
_from a given camera model_ .
So this is kind of reverse-engineered, what the camera manufacturer 
defines as "a good image" - and because of this and each manufacturer 
has it's own opinion (based on what their marketing tells them) of what 
"a good image" has to look like - there are many of them.


None of these is the absolute truth. They are just interpretations of 
the truth.


You may use a base curve as a starting point but this module is not 
meant to do adjustments to images individually.
You may use exposure and e. g. levels or tone curve to work on the 
pictures individually.


--

regards
Bernhard

https://www.bilddateien.de


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Re: [darktable-user] Base curve

[Patrick Shanahan]

* Mikael Ståldal  [07-27-20 10:16]:
> I have enabled the base curve with preset "sony alpha like" (since I have
> Sony cameras), and that is better than without.
> 
> But I have a hard time understanding how to manually edit the base curve in
> a useful way. I can edit it, and I see how the image changes, but it feels
> quite random to me. I don't know what to do to get the result I want.
> 
> Most of the presets are for specific camera makers, so it's hard to know
> which one to chose. Does it even make sense to use a preset for another
> camera than the one taking the photo?
> 
> 
> On 2020-07-26 00:55, Terry Pinfold wrote:
> > ·A base curve is applied automatically but if you look in the preset
> > options you may find another you prefer. You can also create your own
> > for future use.

you don't say what version dt you employe but a better approach would be
to enable filmic and follow:
  https://discuss.pixls.us/t/darktable-3-0-for-dummies-in-3-modules/15849

as advised in this thread.


about base curve:
 https://www.darktable.org/usermanual/en/modules.html
 3.4.1.4.Base curve

fwiw, I have filmic enabled.

-- 
(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] Base curve

[Mikael Ståldal]

I have enabled the base curve with preset "sony alpha like" (since I 
have Sony cameras), and that is better than without.


But I have a hard time understanding how to manually edit the base curve 
in a useful way. I can edit it, and I see how the image changes, but it 
feels quite random to me. I don't know what to do to get the result I want.


Most of the presets are for specific camera makers, so it's hard to know 
which one to chose. Does it even make sense to use a preset for another 
camera than the one taking the photo?



On 2020-07-26 00:55, Terry Pinfold wrote:
·A base curve is applied automatically but if you look in the preset 
options you may find another you prefer. You can also create your own 
for future use.


darktable user mailing list
to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org