Oversaturation when exporting to JPG

[Pierre]

Hello! I’ve recently installed Darktable 5.2 as I wanted to process a few pictures of my baby. After playing a bit with the processing settings, I got this in the software (zoom to fit, and 100% zoom):

In the lighttable section, I export the picture to Jpeg with the default settings:

But here is the resulting Jpeg:

As you can see, the resulting Jpeg is overly saturated, with heavy red tones to the skin.

I’ve tried with other pictures and it happens all the time.

I’ve also tried using different settings for profile and intent, but I always get similar results, no matter what I try.

What is going on here? How to fix this?

A few info about my setup:

• Darktable version: 5.2.0
• Installation type: AppImage (downloaded from darktable.org)
• OS: Ubuntu 24.04, GNOME 46, Wayland session

Thanks in advance for your help!

[Terry (Terry Pinfold)]

I am not sure if this will fix the problem but set the profile to sRGB (web safe) for Jpg images as they are usually viewed on the web. Hopefully that is problem.

[bkhl]

Also maybe set “intent” to “perceptual”? I’m not sure what “image settings” will do there otherwise.

[cedric]

One problem with matrix profiles is that a “perceptual” setting is ignored by CMMs, “relative” being applied instead.

[cjhemmer]

Perhaps the issue isn’t the export but the view on screen. As far as I know Linux with wayland is not color managed. Should an export profile be added to the workflow for the image for proper display space representation? I don’t see that module listed.

[cedric]

@Terry

I am not sure if this will fix the problem but set the profile to sRGB (web safe) for Jpg images as they are usually viewed on the web. Hopefully that is problem.

Sorry, that will not fix the problem because the export example is from RawTherapee exported with an sRGB profile embedded.

[cedric]

@cjhemmer

Perhaps the issue isn’t the export but the view on screen.

On my screen, the export example is significantly more saturated (HSL) when viewed in the GIMP and the HSL Saturation map extracted and compared with the screenshot HSL saturation map.

[Terry (Terry Pinfold)]

@cedric

Sorry, that will not fix the problem because the export example is from RawTherapee exported with an sRGB profile embedded.

The original post mentions DT?

[cedric]

@Terry

@cedric

Sorry, that will not fix the problem because the export example is from RawTherapee exported with an sRGB profile embedded.

I am not sure if this will fix the problem but set the profile to sRGB (web safe) for Jpg images as they are usually viewed on the web. Hopefully that is problem.

The original post mentions DT?

My mistake, dt 5.2 but my point remains that the too-saturated example image was posted with an embedded sRGB profile; so maybe that is not the problem

[AtaraxicShrug (Rob)]

Do you have softproofing activated? Is it set to something other than sRGB? I have made that mistake before and had similar color issues.

Since it happens all the time, can you post a raw for others to check against?