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Daniel Roy
Known Participant
February 14, 2024
Question

Import histogram

  • February 14, 2024
  • 3 replies
  • 7450 views

Team quick question

 

Can I export an histogram values in order to import it into another picture, to colour grade it?

 

I am aware of Image/Adjustment/Match colour but looking to go furhter than that!

    This topic has been closed for replies.

    3 replies

    Earth Oliver
    Earth Oliver
    Legend
    February 26, 2024

    Histograms are NOT used for matching color. I'm not sure why you're trying to go down this path, but it's only going to end in failure.

      c.pfaffenbichler
      Community Expert
      c.pfaffenbichlerCommunity Expert
      Community Expert
      February 19, 2024
      quote

      I am aware of Image/Adjustment/Match colour but looking to go furhter than that!

      As Match Color works destructively by default I consider it best to be avoided altogether. 

       

      Have you tried the Filter > Neural Filters > Color Transfer? (Though additional adjustments may be necessary.)

        D
        Daniel RoyAuthor
        Known Participant
        February 22, 2024

        Hello both, apologies I have only the ability to follow up on this over the week-end; due to work during the week. Trevor, Conrad I will revert. Appreciate the help a lot!

        Dan

        c.pfaffenbichler
        Community Expert
        c.pfaffenbichlerCommunity Expert
        Community Expert
        February 22, 2024

        Have you tried the Filter > Neural Filters > Color Transfer?

        Conrad_C
        Community Expert
        Conrad_CCommunity Expert
        Community Expert
        February 14, 2024

        For color grading in the traditional sense, you probably want to use the technique of creating a color lookup table (color LUT) from a Photoshop document; see the link below. The linked page links to another page that tells you how to load a LUT into another Photoshop document.

         

        https://photoshopcafe.com/make-lut-photoshop/

         

         

          D
          Daniel RoyAuthor
          Known Participant
          February 16, 2024

          Hi thanks Conrad, it's interesting but in whole fairness this has little to do (if anything) with my question.

           

          How could I download the RGB histogram of picture 1 to upload/apply to picture 2...

          D
          Daniel RoyAuthor
          Known Participant
          February 25, 2024
          quote

          How can I then display/highlight some very specific points of my histogram, particularly per channels?

          By @Daniel Roy

           

          I am not sure what you mean exactly. If you want control over specific tonal levels, a Curves adjustment layer can do that. If you want to highlight specific tonal levels, a Threshold adjustment layer can do that.

           

          Maybe we need to know more about what you need. How is the “highlighting” that you want different than the display shown in the demo below, where specific levels are highlighted?

           


          Thanks Conrad. Sorry I could not reply earlier. 

          OK that works to highlight these parts. But how can I do this per channel? I dont see any obvious way to do so. And then bonus question when I higlight red 255 for instance how can I bring those to 250 for instance. 

          Apologies if my questions are super naive and mis formulated...

          thank you again
          Daniel

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