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LR-IMP-PROFILES: red / green / blue curves only with the master and all three channel curves

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Lightroom Classic 15.6 imports an XMP packet's channel curves only when it holds
ToneCurvePV2012 and all three of ToneCurvePV2012Red/Green/Blue; any partial set
(master + one or two channels, channels without the master) imports without
channel curves. #416 read them whenever the master curve was present.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Exalted5373
2026-10-09 12:17:03 -07:00
co-authored by Claude Opus 5.5
parent 68e45585d0
commit c732452d35
3 changed files with 37 additions and 17 deletions
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docs/whats-new.md
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@@ -81,7 +81,8 @@
white, empty Point Color slots…) as settings that couldn't be carried over.
- A preset whose lens-profile switch is off no longer turns off the lens corrections built into a DNG (iPhone ProRAW
and other files with embedded distortion / vignetting corrections), matching what the preset does elsewhere.
- A red / green / blue curve in an XMP preset without the master curve is ignored, as Lightroom ignores it.
- XMP presets apply their red / green / blue curves only when they also have the master curve and all three channel
curves, as Lightroom does: a preset with just one channel curve (or no master curve) leaves the channels alone.
- Imported `.cube` LUT profiles appear in the Profile menu and the profile browser, grouped by their folder, and stay
favourites across restarts (issue #328).
docs/xmp-interop.md
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@@ -117,7 +117,7 @@ names are read (e.g. `Exposure2012`, not the older `Exposure`).
| `ParametricShadows`, `ParametricDarks`, `ParametricLights`, `ParametricHighlights` | `curve.shadows/darks/lights/highlights` | |
| `ParametricShadowSplit`, `ParametricMidtoneSplit`, `ParametricHighlightSplit` | `curve.split_shadows/split_mid/split_highlights` | |
| `CurveRefineSaturation` | `curve.refine_saturation` | 0..100 (100 = curve saturation unchanged) |
| `ToneCurvePV2012`, `ToneCurvePV2012Red/Green/Blue` | `curve.master/red/green/blue` | `"x, y"` points in 0..255 → 0..1; a straight 0→255 line = no curve; the red / green / blue curves are read only with `ToneCurvePV2012` (Lightroom Classic ignores them without it) |
| `ToneCurvePV2012`, `ToneCurvePV2012Red/Green/Blue` | `curve.master/red/green/blue` | `"x, y"` points in 0..255 → 0..1; a straight 0→255 line = no curve; the red / green / blue curves are read only when `ToneCurvePV2012` and all three channel curves are present (Lightroom Classic ignores them otherwise: a master + red-only packet renders without the red curve) |
| `SplitToningShadowHue/Saturation`, `SplitToningHighlightHue/Saturation` | `grading.shadows/highlights.hue/sat` | |
| `ColorGradeShadowLum`, `ColorGradeHighlightLum` | `grading.shadows/highlights.lum` | |
| `ColorGradeMidtoneHue/Sat/Lum`, `ColorGradeGlobalHue/Sat/Lum` | `grading.midtones/global.*` | |