The blues

Sorry this took so long, but as promised, here are some comparisons of some of the blues and reds using the three transforms.

These plots show three things:

  1. “scene” - the starting scene (ACES) colorimetry; the values post-IDT as encoded in the ACES2065-1 file
    • This will be shown in top left quadrant. For some images, only a region of interest was plotted to better show what is going on. A thumbnail with the ROI highlighted in embedded in lower right of this quadrant.
  2. “display linear” - the scene data as mapped to display colorimetry - i.e. where colors end up post-rendering but pre-display mapping
    • For A, B, and C, display linear is represented with \color{red}\text{red} dots.
  3. “display” - the display linear as it is limited to the output display gamut; this includes any gamut-mapping or lack thereof (i.e. clipping).
    • For A, B, and C, display is represented with \color{black}\text{black} dots.

Note: Candidate A and B are being processed through CTL code. Candidate C, for practical reasons, is being processed using LUTs.

Candidate B is shown without the “smart-clip”. I will do a comparison of w/ & w/o smart-clip in a followup post.

I will also add plots for ramps of pure primary/secondaries of AP0, AP1, P3, and sRGB.

Plots

Some of these might need further refinement to better show what is going on.










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