Alexa Filmic Transform from Arri Wide Gamut LogC to Scene Referred Arri Wide Gamut

Alexa Filmic Transform

- !<ColorSpace>
    name: Alexa Filmic Log
    family: log
    equalitygroup:
    bitdepth: 32f
    description: |
      Log based filmic shaper with 16.5 stops of latitude, and 25 stops of dynamic range
    isdata: false
    allocation: lg2
    allocationvars: [-12.473931188, 12.526068812]
    from_reference: !<GroupTransform>
        children:
            - !<MatrixTransform> {matrix: [0.638007619283725, 0.214703856337102, 0.097744451430844, 0, 0.291953778999716, 0.823841041510691, -0.115794820510407, 0, 0.00279827903194611, -0.0670342356889595, 1.15329370741689, 0, 0, 0, 0, 1]}																									
            - !<MatrixTransform> {matrix: [0.41239079926596, 0.357584339383878, 0.180480788401834, 0, 0.21263900587151, 0.715168678767756, 0.0721923153607337, 0, 0.0193308187155918, 0.119194779794626, 0.950532152249661, 0, 0, 0, 0, 1], direction: inverse}																									
            - !<AllocationTransform> {allocation: lg2, vars: [-12.473931188, 12.526068812]}
            - !<FileTransform> {src: filmic_desat65cube.spi3d, interpolation: best}
            - !<AllocationTransform> {allocation: uniform, vars: [0, 0.66]}
    to_reference: !<GroupTransform>
        children:
            - !<AllocationTransform> {allocation: lg2, vars: [-12.473931188, 4.026068812], direction: inverse}
            - !<MatrixTransform> {matrix: [0.638007619283725, 0.214703856337102, 0.097744451430844, 0, 0.291953778999716, 0.823841041510691, -0.115794820510407, 0, 0.00279827903194611, -0.0670342356889595, 1.15329370741689, 0, 0, 0, 0, 1]}																									
            - !<MatrixTransform> {matrix: [0.41239079926596, 0.357584339383878, 0.180480788401834, 0, 0.21263900587151, 0.715168678767756, 0.0721923153607337, 0, 0.0193308187155918, 0.119194779794626, 0.950532152249661, 0, 0, 0, 0, 1], direction: inverse}