rebooting color balance

@elstoc @Matt_Maguire

AP I think the module is great. One improvement for me would to be able to collapse the sections. Perhaps with a click on the name of each section as a toggle. I find that I am often using only one or two sliders in the module for a certain edit and then I want to mask and I have to do a considerable scroll to get there and then as you open the masking options this has also gotten quite long so more scrolling. With the masking and all the sliders its really quite long. People could leave all the sliders open if that suited them but it would be nice to be able to collapse them and choose the default state. An extra click or two and no scrolling would be well worth compressing the module to me. Is that something you would entertain and if so I would happily put in a feature request if there is already not something like that lingeringā€¦

The collapsing is something to think carefully about because the current header style doesnā€™t allow a clear and obvious way to add a collapsing button. I personaly hate the tray architecture where you have to interact to make GUI objects appear, they displace the scrolling problem without solving the need for interaction anyway.

The options to hide the header and borders are not enough to clear the required vertical headspace ?

Hey Boris, i really hope you have time to do a video on these processes.

Without a doubt your editing videos provide some of the best ways to showcase so much of what can be done and how.

Thereā€™s no reason I couldnā€™t read the doco and spend time with trial and error to learn myself, however as a very distracted individual, watching your videos bootstraps my learning :slight_smile: Iā€™m simply standing on the shoulders of giants. :slight_smile:

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Iā€™ll revisit but for me the module is often down off the screen. Be careful with clear and obviousā€¦DT is amazing , awesome but not always clear and obvious IMOā€¦ :slight_smile: Another method might be as you had in the old module tabs for chroma, sat , brillianceā€¦so 3 tabs, one set of slidersā€¦maybe tabs organized by tonal range instead.

I just like things compact it doesnā€™t mean it should be that way but I often find my wrist notices the work of all the long modulesā€¦I guess I need more dynamic shortcutsā€¦

Compacting multi-tabbed modules with collapse controls is problematic, as the module will always be the size of the largest tab. Youā€™d have to collapse sections in all three tabs (or at least the first two) to get it a lot smaller.

Itā€™s big, yeah. But itā€™s worth it.

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I have a 32 inch monitorā€¦it must be a beast for those on a laptopā€¦I think a rework for more tabs etc are overkill but honestly being able to click on the title word sat chroma and brilliance and have it collapse all those sliders would be nice and I think you will find two camps on this one regarding module compactness. If the only reason is that it is not obvious well then add that to the many hidden nuggets and ctrl clicks throughout the UI. Donā€™t get me wrong. I love the module and respect the work and results but to me this is a no brainer way or something like it to allow a user should they so choose to streamline the module.

If this was not an issue for some I am not sure how the options for columns lists and tabs was added to the previous version of the module. That seems like a lot of work for something that either is not wanted or was not requested. Again all good by me if it doesnā€™t ever change np. I am grateful for the tool and the results I can getā€¦

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FWIW I only own a 15ā€™6 laptop, it fits entirely in height.

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Best show it in screenshots. A picture is worth a thousand words.

I can squeeze in the module but again often other modules will be closed but in the list above it depending on when and how i come back to it in an edit I might have to scroll a bit to center it but if I add a mask then its off the screenā€¦and even centered that is 10 inches of movement to go up and down the module when you could click and move only a cm or two if they were collapsedā€¦

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Its just my use case i guess so donā€™t give it much bother.

4k monitor and itā€™ll fit :wink:

Boris we would be much obliged if you could make a special video like a tutorial to achieve different effects with this module and a additional devoted to colour grading.

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I believe that is what AurƩlien is about to do.

It might fit but I dont have 4 k and my monitor is 32 inches so with the module even if it fits this is like 13 or more inches of screen travel maybe more with the parametric mask options open. That makes for a fair bit of movement to move between options in the module rather tban subtle movements of the wrist. I can imagine its work to add this so I have no expectations

Unfortunately thereā€™s no much room for reducing space without getting a cumbersome workflow.
Itā€™s very useful to have a holistic view on the settings.
Maybe you can ditch the global slider if thereā€™s a way to move the low/mid/high sliders simultaneously (e.g. by ctrl+drag on one slider).
Or you need a toggle to show or hide the low/mid/high sliders (similar to the show/hide toggle for color calibration using targets) - and persist a custom preferenceā€¦

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The only other alternative (without code change) is to tweak the font size / CSS to get a more compact layout.

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For those who wanted a video demonstrationā€¦

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Awesome, many thanks Boris. :slight_smile:

Demonstrations of anyoneā€™s workflow and ideas etc are just as valuable in my view as a tutorial.

Iā€™ve watched a few different videos over the years and nearly always learn something from keyboard shortcuts (which I actively try to learn) to ideas and concepts that get shown that make me think ā€œgosh, so thatā€™s how you get that effectā€ :slight_smile:

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I have a question about colour balance and I think this is the right thread to ask.

I know there are technical differences between the fulcrum contrast in colour balance rgb, and using the tone equalizer (perhaps one of the presets). One is a (largely colour invariant) luminance adjustment, and one adjusts actual pixel exposure.

But: is there a practical difference between using the colour balance contrast slider, and a tone equalizer contrast preset (s curve with detail preservation set to none) that I should be aware of?

The fulcrumed contrast is shit, thatā€™s the difference. Since itā€™s not ā€œSā€-shaped, it moves the white point freely. So picture this workflow:

  1. you set-up overall brightness in exposure,
  2. you set-up black and white bounds of the DR in filmic,
  3. you add some contrast in color balance with the fulcrumed contrast,
  4. now your white point has moved up and you need to redo step 2, which will actually aim at reducing the contrast, which will go against the step 3.

That sucks.

Why is fulcrumed contrast still there though ?

It is customary to use color balance RGB masked, usually to treat foreground apart from background. Foreground is usually a reflective object/subject, while background often contains speculars and light sources. In case you want to make the reflective foreground pop up a bit more, then itā€™s fast to do it from the color balance contrast, and it should not affect your global white.

For anything else, tone EQ lets you nail the white point (whether you use details preservation or not) and massage the midtones independently, itā€™s a much better workflow since you donā€™t need a second pass on filmic.

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Thanks for the write-up! I like how with every post you make I get a better understanding of what a ā€˜validā€™ workflow is and why the darktable pipeline is structured the way it is. But if I understand the graphs correctly it is very much possible (and in fact the tone equalizer contrast presets will do this) to increase the white point to some higher value such that an adjustment of the filmic white point is required.

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