Julien Souloumiac

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Insider article Comments posted by Julien Souloumiac

  1. On 2/1/2023 at 12:34 PM, Lowepost said:

    Thanks for your kind words Julien!

    You do not have to bring your PFE LUT into a color managed environment to make the reference. Simply add the LUT to a Grey Scale with no color transforms applied at all, and the result you see on the Waveform will be what you want to recreate. Save a still so that you have a reference.

    Then you'll have to set up your color managed workflow with the transform curve you want, and project it onto the Waveform. From there on you can use your reference still and the curve operator to make an "offset" that basically will be the difference between your reference and the color managed display curve.

    Hi, 

     

    And thanks a lot for this very clear and precise explanation !

    I now understand better the workflow for rebuilding these FPE lut in RCM, and will give it a try asap. 

     

    Thanks again for your help !

     

    Best

     

    Julien

  2. Hello, and thanks for this interesting article. 

     

    I'm not sure to totally understand your rebuilding strategy in a RCM workflow... 

    Let's assume I'm working in RCM, with LogC files and DaVinciWideGamut as my timeline (ie "working") color space, and Rec709 as Output. And that I want to rebuild the classic Kodak Lut from Resolve. 

     

    First, to correctly feed my Lut, I would assume to add a CST node, from DVWG to Arri LogC, or Aces transform node, from DVWG to ADX 10, and then my Kodak on a new node. 

    Then I could grab my still and start rebuilding my Lut. Am I correct there, or am I missing something ? 

    Moreover, I don't exactly understand this whole part :

     

    That's why we recommend a slightly different strategy when rebuilding the curves of the PFE LUT for use in a display-referred workflow. Instead of building the Y+RGB curves from a straight line as in the example above, simply start the building process from the color managed tone curve you plan to grade under and tweak this curve to match the curves of the PFE LUT. This delta component can now be saved and combined with other tone curves in the color managed workflow."

     

    Could you elaborate please ? 

     

    Thanks a lot again

     

    Best

     

    Julien