Lightroom: Auto Black & White Mix doesn't work in presets for profile Adobe Monochrome

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  • Updated 5 months ago
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[Creating a preset with Treatment & Profile checked and Auto Black & White Mix checked fails to capture the auto-black-and-white settings when the current profile is Adobe Monochrome. See here for a recipe and diagnosis: 
https://feedback.photoshop.com/photoshop_family/topics/auto-black-white-mix-does-not-apply-in-preset...
-- John Ellis]

I have applied Auto Black & White Mix to the photo (clicked to the Auto button in BW area).
Then I create or update my preset with checking:
- Black & White Mix
- Auto Black & White Mix
But the preset does not apply auto BW Mix to other photos. All BW sliders are zero.
Lightroom Classic CC 7.4
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Petr Doležal

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Posted 5 months ago

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Johan Elzenga, Champion

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Black & White Mix would save your current mix in the preset, so that is not what you should do. Save 'Auto Black & White Mix' and 'Treatment and Profile' in a preset.
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Petr Doležal

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OK, you are right, but let me correct myself: When I check Auto Black&White Mix, checkbox for Black & White Mix is disabled. So there is no difference if I checked Black & White Mix or not. The result is Auto Black & White Mix does not work.
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Petr Doležal

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So, to avoid confusion: I have used Auto BW Mix and created a preset with these two options checked: 'Auto Black & White Mix' and 'Treatment and Profile'. Auto BW does not work for other photos. Please, can anyone verify this incorrect behaviour?
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Johan Elzenga, Champion

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I tried it and it works for me. Can you look at ‘Help - System Info’ and tell us what it says behind ‘License’?
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Petr Doležal

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Lightroom Classic version: 7.4 [ 1176617 ]
License: Creative Cloud
Language setting: en
Operating system: Windows 10 - Home Premium Edition
Version: 10.0.17134
Application architecture: x64
System architecture: x64
...
(Edited)
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Johan Elzenga, Champion

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OK, there is no problem with the update itself. Maybe this is a Windows issue. I don’t see it on my Mac.
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John R. Ellis, Champion

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Creating a preset with Treatment & Profile checked and Auto Black & White Mix checked fails to capture the auto-black-and-white settings when the current profile is Adobe Monochrome.

Here's a recipe for producing the bug on LR 7.4 / Macos 10.13.5:

1. Edit a raw in Develop.

2. In the Basic panel, click Treatment: Black & White. In the B & W panel, click Auto.

3. Create a preset "Auto Adobe Monochrome" with Treatment & Profile and Auto Block & White Mix checked.

4. In the Basic panel, change Profile: Adobe Monochrome to Profile: Adobe Standard B&W (in the Legacy Group).

5. Create a preset "Auto Adobe Standard B&W" with Treatment & Profile and Auto Block & White Mix checked.

6. Reset the develop settings and apply the preset Auto Adobe Monochrome. Observe that the profile changes to Adobe Monochrome but none of the Black & White Mix sliders change (incorrect behavior.)

7. Reset the develop settings and apply the preset Auto Adobe Standard B&W. Observe that the profile changes to Adobe Standard B&W, the Black & White Mix sliders change to their auto settings, and the Auto button is greyed out (correct behavior).

8. Open the file "Auto Adobe Monochrome.xmp" in a text editor and observe these lines are missing:

   crs:ConvertToGrayscale="True"
   crs:AutoGrayscaleMix="True"

9. Add those two lines to the file and restart LR.

10. Reset the develop settings of the raw photo and apply the preset Auto Adobe Monochrome. Observe that the Black & White Mix sliders now change to their auto settings and Auto is greyed out (correct behavior).

* * *

There are two workarounds to this bug:

1. When you create the preset, check Auto Black & White Mix but don't check Treatment & Profile. When you apply the preset, the profile will change to Adobe Standard B&W (the old legacy black-and-white profile).

2. When you create the preset, check Auto Black & White Mix and Treatment & Profile. Then edit the preset's .xmp file in a text editor and add the two lines above. When you apply the preset, the profile will stay at Adobe Monochrome (the new enhanced profile used by default for black-and-white conversions).
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Johan Elzenga, Champion

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Right. When I tried it I had Adobe Standard B&W selected as profile. Creating a preset with Auto Black & White Mix and Treatment & Profile worked fine, so that is more or less workaround 3, or 1b.
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John R. Ellis, Champion

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It doesn't seem to matter whether the preset has Treatment & Profile unchecked or has it checked with Adobe Standard B&W. In either case, the Auto Black & White Mix gets applied and the profile ends up as Adobe Standard B&W.