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LR-EDIT-COLOR-TEMP: raw-parity.md describes Kelvin WB for matrix cameras (#730)

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Jason Baldwin
2026-10-10 21:47:36 +02:00
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docs/raw-parity.md
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@@ -171,7 +171,7 @@ checked, and Canon, the largest bucket, is the weakest of the big four.
| Camera Matching looks | 481 models (plus phone-maker looks) | none (the per-file JPEG fit imitates the camera's own look) |
| Creative profiles | Adobe Color, Portrait, Landscape, Vivid, Monochrome… | our own looks (Color, Neutral, Vivid, Landscape, Portrait, Monochrome) |
| DCP / dual-illuminant model | ✅ | dual-illuminant DNG colour (ColorMatrix / ForwardMatrix 1-2, CameraCalibration, AnalogBalance), HueSatMap, LookTable, ProfileToneCurve; external `.dcp` never loaded (clean-room) |
| White balance in Kelvin | ✅ for every model | absolute Kelvin only where matrices exist; per-file fits give relative WB (#296, #730) |
| White balance in Kelvin | ✅ for every model | absolute Kelvin where the camera has colour matrices (its own, or one of the 52 spectral rows), also for files whose look is a per-file fit (#730); other raws keep the relative scale (#296) |
**How far the default rendering is from Adobe's** (CIE ΔE; measured where stated):
@@ -186,7 +186,7 @@ checked, and Canon, the largest bucket, is the weakest of the big four.
desaturated), the largest group of open core-path issues.
**Colour score ~35%** (estimated): most decoded files start close to the camera's own look (ΔE ~5),
about 10% start far off (ΔE ~18), nothing is calibrated, Kelvin WB is missing for fitted cameras, and
about 10% start far off (ΔE ~18), nothing is calibrated, Kelvin WB is missing for fitted cameras without colour matrices, and
the distance to Adobe Standard is unmeasured. In the readiness numbers this becomes a colour factor
of ×0.85 for a working photographer (they correct colour by hand, at a cost) and ×0.75 for the
essentials user (the default look is what they keep).
@@ -240,7 +240,7 @@ Beyond decoding:
| Gap | Hours | Needs |
|---|---:|---|
| Measured colour calibration for the ~60 popular bodies, Kelvin WB, render-fidelity suite against Lightroom | 80–150 | chart shots per camera (a human with cameras) or licensable measured data |
| Measured colour calibration for the ~60 popular bodies, Kelvin WB for cameras without matrices, render-fidelity suite against Lightroom | 80–150 | chart shots per camera (a human with cameras) or licensable measured data |
| Lens profile database of our own (fitting tools, data format, top 100 lenses), maker-note vignetting / CA | 40–80 | calibration shots (a human with lenses) |
| Demosaic and highlight quality measured against Lightroom; X-Trans AI denoise | 15–30 | |
| **Total RAW** | **255–480 h** (decoding list above 120–220 h; ~60% parallelizes) | |