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