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X-T20, X-T2, X-Pro2, X-E3, X-H1 and X100F have no measured colour matrix, so As Shot showed on the relative scale. Their RAFs store the camera's own neutral multipliers for Illuminant A and D65 (tag 0xf00c). Two points give a line in (ln R/G, ln B/G); mired is linear along it, isotherms are perpendicular, tint is scaled by the CIE locus spacing. Only the file's pair and CIE colorimetry are used. Bodies with matrices are unchanged. The look stays the per-file JPEG fit. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014ti8KemZbjE2ZgHgV1q1BM