J's Transform

  - !<ColorSpace>
    name: Custom Base Contrast Filmic Log Encoding
    family:
    equalitygroup:
    bitdepth: 32f
    description: |
      Custom experimental Filmic Log with Base Contrast encoding.
    isdata: false
    allocation: lg2
    allocationvars: [-12.473931188, 12.526068812]
    to_reference: !<GroupTransform>
        children:
            - !<FileTransform> {src: Filmic_to_0-70_1-03.spi1d, interpolation: linear, direction: inverse}
            - !<AllocationTransform> {allocation: lg2, vars: [-12.473931188, 4.026068812], direction: inverse}