[digiKam-users] color profile saving

Daniel Bauer linux at daniel-bauer.com
Mon Jul 18 11:59:36 BST 2022

Am 18.07.22 um 12:40 schrieb Maik Qualmann:
> A test here with the current developer version digiKam-8.0.0 and the current
> AppImage digiKam-7.7.0 show no problems with saving the color profile to a new
> PNG file.
> Which digiKam version are you using exactly?
> Maik

which is the one from the opensuse repos for Leap 15.3

(I prefer the opensuse rpm's because of their better integration, while 
the appimages often have (had in my trials) some problems, especially in 
opening/interacting with other programs from within digikam or with 
integration to desktop settings :-) )

> Am Montag, 18. Juli 2022, 10:38:09 CEST schrieb Daniel Bauer:
>> Am 17.07.22 um 22:52 schrieb Maik Qualmann:
>>> Of course, even if color management is turned off, an existing color
>>> profile will be saved to the new image. Please describe in more detail in
>>> which image format you save and what format the original image had.
>>> Tested here with a PSD image using AdobeRGB 1998 and exported as PNG or
>>> TIFF.
>>> Maik
>> I did a small test right now:
>> - open a PNG that contains AdobeRGB profile
>> - save as JPG: profile is saved correct
>> - save as PNG: profile is gone, removed
>> (I didn't notice that the profile remains intact in JPG, because I
>> usually work with PNG. Also usually I do not "save as" but overwrite)
>> Here are the samples:
>> - https://www.daniel-bauer.com/div/IMG_0157.png
>> (34MB, Original with embedded AbobeRGB profile)
>> - https://www.daniel-bauer.com/div/IMG_0157_2.png
>> (36MB, original opened in digikam editor, "save as png", has no profile)
>> - https://www.daniel-bauer.com/div/IMG_0157.jpg
>> (6MB, original opened in digikam editor, "save as jpg", profile stays
>> intact)
>>> Am Sonntag, 17. Juli 2022, 17:50:39 CEST schrieb Daniel Bauer:
>>>> Hello,
>>>> I have a calibrated AdobeRGB1998 screen, my images have embedded
>>>> AdobeRGB1998-profile. Now there are some things I don't understand:
>>>> - when I disable color management (which I prefer) the profile is
>>>> removed from files when saving. As the profile of my files and of the
>>>> screen are the same, color management isn't really necessary for me
>>>> (there is no difference whether it's activated or not as there is
>>>> nothing to change).
>>>> So I would like to work without color management, but still have the
>>>> unchanged profiles embedded in the saved files.
>>>> Can I set this behavior somewhere?
>>>> (I must add the color profile again using a script with ImageMagick, but
>>>> as soon as I edit something in digikam the profile is lost again - in
>>>> the end I have mix of images with or without embedded profile...)
>>>> -------------
>>>> As said I prefer to work without color management in digikam because in
>>>> my case it doesn't add anything for me. On the other hand there are some
>>>> disadvantages when activating color management, that I don't like - but
>>>> maybe there are some setting I haven't found that could better it?
>>>> I set working color space: AdobeRGB1998, Profiles: Monitor profile:
>>>> AdobeRGB1998, "use managed view in Previews" is clicked.
>>>> - with activated color management the thumbnails of adobeRGB-images in
>>>> album view show bad, as if I would look at them in an srgb screen. The
>>>> editor shows the image correct.
>>>> When I deselect "use managed view in Previews" the thumbs are displayed
>>>> correct.
>>>> Shouldn't that be at the reverse? Or do I understand something wrong?
>>>> - when I have images with another (wrongly) embedded profile, I want
>>>> them to open ignoring the embedded profile and use the Adobe-profile. I
>>>> can do that when I set "ask what to do when profile doesn't match".
>>>> In settings I see only the other setting "convert to working space".  I
>>>> would like to open it in editor as described above, but without being
>>>> asked. Can I somehow?

Daniel Bauer photographer Basel Málaga

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