As soon as I activate the ‘color calibration’ module I get this error ‘white balance module error’ and the ‘white balance’ module shows the error in the subject of this post.
The ‘white balance’ module is set to the profile I’ve made photographing a white screen with my camera, so it is set to ‘user modified’ as in Aureliens video (see just after the 15:00 mark). I know I can avoid this error setting it to ‘as shot to reference’ or ‘camera reference’ then losing the preset.
I noticed that the ‘color calibration’ module applies a preset named ‘scene referred default’. This is according to the general darktable ‘processing’ setting ‘auto-apply pixel workflow defaults’ to ‘scene-referred (filmic)’. I temporarily disabled this setting, but to no avail. Setting the ‘color calibration’ to ‘same as pipeline D50’ also removes the error. But I do not believe this is the way to go.
I’ve read a lot on this forum as I have read the manual but I have not found a solution jet.
If you look under the CAT warning section of the manual, there is a note that says when making corrections to the sensor whitebalance you can ignore the warning
I would never have guessed…it’s that simple really…?
Did you mean this sentence? “When using custom presets and some specific workflows, such as editing film scans or JPEGs, these warnings can and should be ignored.”
I guess I will have to further test as the calibration module seems to do nothing turning it on/off.
The last sentence of the first bullet point on pg 89. “Note that some sensors require minor corrections…” (or something along those lines)
Basically you are substituting your own camera white balance profile inside of the white balance module instead of modifying the values derived from the camera.
The method explained by AP was really only needed if you felt the D65 reference values provided by DT were not good…AP suggested the shot of a calibrated white screen as a potential correction…
DT now uses a sort of hybrid appoach so that as shot get used for demosaicing and then the reference is applied later
DT now uses by default as shot to reference so the method you mention might not integrate with that…
Thanks Todd, I will further look into that (i.e. whether the differences between reference values and my shot of a calibrated white screen are worth any correction) and for now proceed with ‘as shot to reference’.
Thanks Todd, will read… there is much to read when you want to evolve a bit :-)!
My goal is to improve photographing my wife’s work, she makes mosaics. Some have very intense colors, others are very subtle. At least on our own monitor and shortly our own prints I do hope to get the colors more or less right. I heard her talk about a booklet… and I started talking about a website…
I had yesterday (European) night my first result. Just checked the picture again in daylight beside the original. I’m happy and so is the creator of the work - my wife. Some detail in the pink colors are a touch to reddish, will work still a bit on that. Now I will embark on - hopefully - making good quality pictures of all the work. That is going to keep me busy for a while.
I cannot imagine doing this with LR en PS. I have much more grip on what I do in darktable. Very nice!
really…?
