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Keep 1 colour in a BW picture

Community Beginner ,
Jun 28, 2024 Jun 28, 2024

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Hello, I am on LightRoom Classic v.13.1 on MacBook Pro M2 and I wish to transform a photo in BW but keeping 1 colour on a particular detail, for example a picture with different people in which someone has a flower in his hands and I wish to keep the colour on the flower only while oll the rest has to be black&white. 

Could you mplease help me? I sow some videos but all related to all LR releases and thus I can repeate those commands on v. 13.1. - Thank you

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correct answers 2 Correct answers

Community Beginner , Jun 28, 2024 Jun 28, 2024

I wish to add I am usinf RAW files, taken with Olympus OMD E1

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LEGEND , Jun 29, 2024 Jun 29, 2024

Another way

 

  1. In my example, I have a photo of a Rose, or Roses.
  2. Accomplish your normal basic edits.
  3. Create a Mask, perhaps subject, perhaps Object, including your desire detail in the mask
  4. Name this mask Rose
  5. Select the mask, then select to Duplicate and Invert the mask
  6. Rename this mask Not Rose
  7. With the Mask, Not Rose selected, adjust the saturation to 0 (this is not the only way)
  8. Add/Sub to either mask as needed
  9. Edit the Rose mask as needed (sliders)

 

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Community Beginner ,
Jun 28, 2024 Jun 28, 2024

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I wish to add I am usinf RAW files, taken with Olympus OMD E1

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Community Expert ,
Jun 28, 2024 Jun 28, 2024

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One quick way is-

1) Develop the colour image- leaving it in colour mode.

2) Open the Colour Mixer Panel and reduce all Saturation sliders to  -100- EXCEPT for the colour you want to remain.

2024-06-29 14_38_05-Roberts Catalog-v13-3 - Adobe Photoshop Lightroom Classic - Develop.jpg

3) Create a Develop Preset to apply the action on other images..

If some areas have unwanted remaining colour- Tidy up with a Brush mask to desaturate brushed areas.

You will need to export a derivative JPG or TIF, PSD, PNG to embed the changes. (RAW data cannot be changed)

 

Regards. My System: Lightroom-Classic 13.4, Photoshop 25.9.1, ACR 16.4, Lightroom 7.4, Lr-iOS 9.0.1, Bridge 14.1.1, Windows-11.

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LEGEND ,
Jun 29, 2024 Jun 29, 2024

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Another way

 

  1. In my example, I have a photo of a Rose, or Roses.
  2. Accomplish your normal basic edits.
  3. Create a Mask, perhaps subject, perhaps Object, including your desire detail in the mask
  4. Name this mask Rose
  5. Select the mask, then select to Duplicate and Invert the mask
  6. Rename this mask Not Rose
  7. With the Mask, Not Rose selected, adjust the saturation to 0 (this is not the only way)
  8. Add/Sub to either mask as needed
  9. Edit the Rose mask as needed (sliders)

 

40.png

 

41.png

 

42.png

 

43.png

 

44.png

 

45.png

 

46.png

 

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Community Beginner ,
Jun 29, 2024 Jun 29, 2024

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Thank you both per your prompt answers, very details and usefull. I will practice them tonight. Best regards.

 

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