Re: [darktable-user] "while balance applied twice" warning in DT 4.0

2022-07-13 Thread Jean-Luc

Le 13/07/2022 à 10:57, Mikael Ståldal a écrit :
Ah, got it, thanks for the explanation. Now when I know how it works, 
it makes sense.


(I guess that I should have read the user manual before asking, since 
it is explained there.)


However, I think the error messages could be improved. I am used to 
modules working more or less independently from each other, and this 
coupling is unexpected.



On 2022-07-13 10:42, Remco Viëtor wrote:

On mercredi 13 juillet 2022 10:20:50 CEST Mikael Ståldal wrote:

Now I get the same problem when importing a new photo in 4.0. It's fine
right after import, but as soon as I change something in the White
Balance module, I get the "while balance applied twice" warning, and in
Color Calibration it says "white balance module error".

I get this in the console:
-
[color calibration] white balance error
[color calibration] white balance error
[color calibration] white balance error
[white balance] double application of white balance
[white balance] double application of white balance
[color calibration] white balance error
That's exactly the planned behaviour: if you want to use the color 
calibration

module, the white balance module should be set to "camera reference".
The reasoning behind that is that the demosaic module needs some form 
of white
balancing/camera correction to give a decent result, but the proper 
place to

correct for illuminant (aka colour of scene lighting) is later in the
pipeline. 
I must admit I did not understand when I read this using the help on the 
WB module.
But now, after Pascal explained it and you pointed it again, I read the 
help again and finally found that it makes sense.


[OT]By the way, I realize that I never thanked the devs for adding exif 
handling in the metadata fields at import.

This feature is really helpful. Many thanks. :-) [/OT]

Rgrds,

J.-Luc


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Re: [darktable-user] "while balance applied twice" warning in DT 4.0

2022-07-13 Thread Remco Viëtor
On mercredi 13 juillet 2022 11:41:40 CEST Mikael Ståldal wrote:
> I'm having a hard time finding stuff on pixls.us. Can you give some
> pointers?
> 
> On 2022-07-13 10:42, Remco Viëtor wrote:
> > For more precise information, you may want to check Aurelien Pierre's
> > posts
> > and articles (on pixls.us iirc).
> 
> 
> darktable user mailing list
> to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org

https://discuss.pixls.us/t/introducing-color-calibration-module-formerly-known-as-channel-mixer-rgb/21227



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Re: [darktable-user] "while balance applied twice" warning in DT 4.0

2022-07-13 Thread Mikael Ståldal
I'm having a hard time finding stuff on pixls.us. Can you give some 
pointers?



On 2022-07-13 10:42, Remco Viëtor wrote:

For more precise information, you may want to check Aurelien Pierre's posts
and articles (on pixls.us iirc).


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Re: [darktable-user] "while balance applied twice" warning in DT 4.0

2022-07-13 Thread Mikael Ståldal
Ah, got it, thanks for the explanation. Now when I know how it works, it 
makes sense.


(I guess that I should have read the user manual before asking, since it 
is explained there.)


However, I think the error messages could be improved. I am used to 
modules working more or less independently from each other, and this 
coupling is unexpected.



On 2022-07-13 10:42, Remco Viëtor wrote:

On mercredi 13 juillet 2022 10:20:50 CEST Mikael Ståldal wrote:

Now I get the same problem when importing a new photo in 4.0. It's fine
right after import, but as soon as I change something in the White
Balance module, I get the "while balance applied twice" warning, and in
Color Calibration it says "white balance module error".

I get this in the console:
-
[color calibration] white balance error
[color calibration] white balance error
[color calibration] white balance error
[white balance] double application of white balance
[white balance] double application of white balance
[color calibration] white balance error

That's exactly the planned behaviour: if you want to use the color calibration
module, the white balance module should be set to "camera reference".
The reasoning behind that is that the demosaic module needs some form of white
balancing/camera correction to give a decent result, but the proper place to
correct for illuminant (aka colour of scene lighting) is later in the
pipeline.

For more precise information, you may want to check Aurelien Pierre's posts
and articles (on pixls.us iirc).

So, either leave WB module in "camera reference", correct white balance in
color calibration module,
or don't use the color calibration module for setting the white balance. You
can set the adaptation to "none (bypass)" if you want to use the other
possibilities of this module.

Remco

Remco.



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Re: [darktable-user] "while balance applied twice" warning in DT 4.0

2022-07-13 Thread Remco Viëtor
On mercredi 13 juillet 2022 10:20:50 CEST Mikael Ståldal wrote:
> Now I get the same problem when importing a new photo in 4.0. It's fine
> right after import, but as soon as I change something in the White
> Balance module, I get the "while balance applied twice" warning, and in
> Color Calibration it says "white balance module error".
> 
> I get this in the console:
> -
> [color calibration] white balance error
> [color calibration] white balance error
> [color calibration] white balance error
> [white balance] double application of white balance
> [white balance] double application of white balance
> [color calibration] white balance error
That's exactly the planned behaviour: if you want to use the color calibration 
module, the white balance module should be set to "camera reference".
The reasoning behind that is that the demosaic module needs some form of white 
balancing/camera correction to give a decent result, but the proper place to 
correct for illuminant (aka colour of scene lighting) is later in the 
pipeline. 

For more precise information, you may want to check Aurelien Pierre's posts 
and articles (on pixls.us iirc).

So, either leave WB module in "camera reference", correct white balance in 
color calibration module, 
or don't use the color calibration module for setting the white balance. You  
can set the adaptation to "none (bypass)" if you want to use the other 
possibilities of this module.

Remco

Remco. 



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Re: [darktable-user] "while balance applied twice" warning in DT 4.0

2022-07-13 Thread Mikael Ståldal
Now I get the same problem when importing a new photo in 4.0. It's fine 
right after import, but as soon as I change something in the White 
Balance module, I get the "while balance applied twice" warning, and in 
Color Calibration it says "white balance module error".


I get this in the console:
-
[color calibration] white balance error
[color calibration] white balance error
[color calibration] white balance error
[white balance] double application of white balance
[white balance] double application of white balance
[color calibration] white balance error
-

Changing something in the Color Calibration module seems to work 
normally and doesn't give me any warning.



On 2022-07-12 18:23, Mikael Ståldal wrote:
I just experienced a similar thing when I tried to adjust WB in 4.0 on 
photos imported with 3.8. It says "while balance applied twice".


My Camera is Sony RX-100 M5A, which was supported in 3.8 also.

(Also using Ubuntu 20.04.)

What's going on?


On 2022-07-12 17:58, Jean-Luc wrote:

Hello,

I am still running focal and finally got dt to upgrade to 4.0 
yesterday. Cool !
I will have to learn some more things, as it comes with many 
improvements and bug fixes.

And it finally brings wb and noiseprofile support for my D4s.
About wb, I noticed something strange.
I had worked on a few photos on 3.8, on which I had set wb to Camera 
neutral and adjusted Color calibration using the color picker.
But, when I reviewed my photos on 4.0, a few minutes ago, they all 
displayed a warning on both wb and cc, and it appeared that wb was 
reset to Camera (instead of Camera neutral).
Could this be a normal behaviour, due to the fact that there were no 
wb support for this camera before ?


Rgrds,

J.-Luc


 


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