…so I tried a small experiment.
I’ve been curious about the impact of early adjustments in the pipeline, and how they impact the module effects further down the pipeline.
I opened darktable and opened a photo from my library that I thought I could use to show the effects of chroma adjustments. I tried my best to keep all the settings the same between resetting the history stack and below is what found.
Base photo…relative black and white point adjustment, global Vibrance and saturation benchmark adjustment, white balance benchmark
It has taken me this long to realize what can be done with the tools provided.
Prior to this I was just moving things around until I got a result I was happy with…now I at least understand just what some of the modules actually control in the image.
I feel like I’ve just begun to really understand what darktable really does and I’m looking forward to more.
Sorry its late but I am missing how what you shared relates to this part…
You do mention the history stack so I just want to be sure that you are clear that this has nothing to do with the order of the modules and how they would impact sequential editing…that is shown from bottom to top in the active modules tab…
I may have been too quick in my post.
I had more examples that had each of an early positive, and early negative global chroma adjustment from the first ordered module; and then a positive and negative color balance chroma adjustment done to each to see what the difference in effect was.
An early global chroma adjustment impacted the color balance rgb chroma adjustment to a more or lesser degree dependent on the amount of early adjustment.
Basically, I was just curious as to how much of an impact the first ordered module adjustments would have on modules further down the pipeline.
I found that they do have an impact but aren’t even really necessary, as all of those same adjustments are in their own modules and don’t even need to be addressed in the first module.
In my excitement to post I just didn’t go in to a lot of detail.
Basically…I just figured out (after several months of use) one of the basics of darktable
Okay so are you referring to using two instances of CB and looking at something happening depending on when you add the global chroma adjustment…if so it would make sense right as 20% in the first one has a different input but again I might be missing the nuance of what you are saying as I am 5 min from being off to bed
Excellent, you’re picking at the essence of things, ordering of operations from raw file open to jpeg/tiff/png/whatever export. I’ve been doing this since I started with my hack processor rawproc, designed from the start to make order of operations a first-order consideration.
The essential consideration I’ve found is to keep color-affecting operations before any tone operations that lift the data out of its original scene-linear state. With that, I’ve found that I can use even simple HSV color saturation in limited quantities and not dork up colors too much.
Other, more-goofy things, like not using a working color profile at all. If my camera profile has well-defined black and white points like Elle Stone showed us, I can do all my raw processing in original camera space and just do the camera->sRGB transform at JPEG export. Indeed, to my experience, early Rec2020/ProPhoto just introduces its own things to consider/dork things up.
Anyway, have fun messing with that. You’ll come to realize a lot of what we’ve been told to do in raw processing is a bit of a sham…
