Darktable removes the base curve after I exported a jpg of the .NEF file. It happens not all the time.
Do you experience this too? (It happened when I just exported a jpg without editing anything.
Check the file format option that you have chosen, if you choose "copy" it will export the image unchanged
Thx for your answer! Unfortunately it's not the solution. My settings are right.
The exported jpg is totally fine, only it removes the base curve from the xmp file. If I export a file I use for example "nikon alternative". The picture (jpg) looks also like it has this base curve. If I then reopen the folder in darktable (for example if I reopen it after I edited another collection) and go on a RAW file in darktable it doesn't show the base curve in the history anymore and the picture looks grey and flat (because there's no base curve anymore)
Are you stating that you edit a raw image using the base curve module, but when you go back to that image at a later date the base curve module is missing?
If so, when you edit the image, look in the history stack to see if the base curve is in the history stack but one of your presets has overridden it
Also check in the DT preferences under Core Option in the XMP section that the "Write Sidecar for each image" is ticked
Exactly. The export is fine (jpg looks like I edited it with the base curve module) but then later in darktable if I want to make a second export with further edits the base curve module isn't in the history stack anymore like I wouldn't have used it in the first edit process.
I do not use any other presets than an own setting in the module base curve (preserve colors on "none" instead of "luminance"). Also why should it overwrite anything if I just reopen it? Normally it only applies the presets if you open a new collection (a folder which has never been opened with dt and has no xml data yet)?
How bizarre, did you check the DT preferences under Core Option in the XMP section that the "Write Sidecar for each image" is ticked?
After you have edited the image take a note of the history stack, when you open it again is the history stack the same? Has the base curve module vanished from the stack? Has anything been added to the stack?
Write sidecar is ticked (toggled on).
Before exporting (it uses the base curve that I set as preset):
Right after exporting the jpg and reopening the folder with darktable, going into darkroom: base curve is not there anymore:
Seems like a bug to me. I tried to sign up here: https://redmine.darktable.org/projects/darktable/issues but I can't it says: "Sorry, that was too quick! Please resubmit."
It does not happen in following cases:
Is the option to check for updated XMP file checked in DT options? (Not by my PC at mo so cant remember exact wording).
This is NOT checked by default so it you have checked it, there might be the cause
Otherwise i'm stumped, maybe check the preset itself to see if one of the preset options is causing it to stop applying after edit (no idea what it could be but worth a check)
Thank you for trying to help me!
It's unchecked, yes.
Under Core Options there is the options for Auto apply base curve and apply per camera basecurve, check that these are both on
I still have the same issue :/
If you set an own base curve as preset and then try the same steps as me, does it happen on your pc too? Otherwise I will just look for a way to reset darktable.
Go to DT option, select the presets tab, under base curve double click your preset. check the "auto apply" change:
Model/maker/lens all to %
Format Normal/Raw/HDR all ticked
Exposure = 0
Aperture = f0
So that the base curve is always applied and try again
If not sounds like there is a bug. I am running Windows version so the bug may not affect this build
Look at this thread as we discuss how to reset DT in a couple of the posts. Look HERE
Checked everything you said and reseted darktable. Still having the issue.
It happens without setting a preset too (if I use the default darktable base curve)
Most strange, I know that there is a 3.01 option out soon , maybe now, try an upgrade when available, apart from that I cannot think of anything else to try, sorry.
There is a Facebook group for DT, maybe ask them there to see if they can help