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patk28090372
Participant
January 20, 2025
Question

Curves not working in LAB Color Space

  • January 20, 2025
  • 6 replies
  • 711 views

I had a chat with tech support about a week or two ago about an issue that came up with Curves. This issue is still there after re-installing Photoshop today as tech support had suggested.

Problem:
When working in LAB Color Space the Curves Adjustment label is greyed out and I cannot access it. 
I haved used this for many years and it appears to have stopped working a few updates ago.

*Screenshot attached in Word.

Thank You,
Patrick Kavanagh.

    6 replies

    P
    patk28090372Author
    Participant
    January 21, 2025

    Thank You!

    D Fosse
    Community Expert
    D FosseCommunity Expert
    Community Expert
    January 21, 2025

    This is a known and acknowledged bug. We've had a ton of posts about it.

     

    It will get fixed. In the meantime everything still works from the Adjustments panel, or from the menu Layer > New Adjustment Layer. So you can still use these adjustment layers in Lab or CMYK.

      P
      patk28090372Author
      Participant
      January 21, 2025

      Thank You! I will go this other route.

      Conrad_C
      Community Expert
      Conrad_CCommunity Expert
      Community Expert
      January 20, 2025

      I see it too, it’s strange that Curves isn’t available as an adjustment layer from the Layers panel in Lab mode.

       

      I found a workaround…but there’s something strange about that too. It does work if you add the Curves adjustment layer from the menus (Layer > New Adjustment Layer > Curves) instead of the Layer panel. So it can be done, but for some reason is not working in the Layers panel.

       

       

      Image > Adjustments > Curves also still works in Lab, but that’s the destructive version of the adjustment, not an adjustment layer.

       

      A moderator should move this thread to the Bugs section.

      Trevor.Dennis
      Community Expert
      Trevor.DennisCommunity Expert
      Community Expert
      January 21, 2025

      @Conrad_C  Is this happening with documents created from the outset in LAB mode?

      I just changed a document from RGB to LAB and was able to add curves layers from Layers panel, Adjustments panel, and menu.  I am using Windows 11.  We don't get to see what platform the OP is using when Keith moves it.

      [EDIT] I see you are using a Mac.

      Conrad_C
      Community Expert
      Conrad_CCommunity Expert
      Community Expert
      January 21, 2025

      I’m on a Mac. I just started a new document and set it to Lab mode. At first I thought it might be because it was 16 bits per channel, but Curves was still dimmed after I changed the document to 8bpc.

       

      So maybe it’s a Mac thing?

      kglad
      Community Expert
      kgladCommunity Expert
      Community Expert
      January 20, 2025

      in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

      p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.



      <"moved from cc desktop bugs">
      P
      patk28090372Author
      Participant
      January 20, 2025

      Photoshop

      kglad
      Community Expert
      kgladCommunity Expert
      Community Expert
      January 20, 2025

      what app?

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