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Louise309320189n7g
Participant
July 9, 2023
Question

Why is the RGB domain of PS a quadrilateral?

  • July 9, 2023
  • 1 reply
  • 275 views

 

In https://helpx.adobe.com/photoshop/using/understanding-color-management.html, the RGB domain of PS is a quadrilateral. The RGB domain that I usually see is a triangle, such as sRGB or prophotoRGB. Is there anyone can help explain this issue? Thanks.

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    1 reply

    D Fosse
    Community Expert
    D FosseCommunity Expert
    Community Expert
    July 9, 2023

    That illustration doesn't make any sense, except to show that color spaces of various devices are indeed different.

     

    Just ignore it. An RGB color space is defined by the three primaries, the white point and the tone response curve (plus a few minor details).

      L
      Louise309320189n7gAuthor
      Participant
      July 10, 2023

      what are the minor details？

      c.pfaffenbichler
      Community Expert
      c.pfaffenbichlerCommunity Expert
      Community Expert
      July 10, 2023

      What do you mean by »the RGB domain of PS«? 

      The profile connection space is Lab, if I remeber correctly, so what RGB are you referring to? 

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