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vangel76andClaude Opus 5.5
dc9f15ada1
In After Effects 2026 the non-legacy curve of Brightness -40 is the inverse of Brightness +40 (within 2.6/255 on a full black-to-white ramp) and Contrast -50 the inverse of Contrast +50. EffectCraft fitted the negative brightness with its own power (2^(1.32 |b|) on v), 20/255 off AE at -40; the negatives now use the reciprocal exponents of the positive curves: Brightness -40 max 6.2/255 (was 19.8), Contrast -50 4.1 (was 7.0); positives unchanged (40: 5.5, 80: 7.8, Contrast 50: 2.7, 90: 5.0; B20 C30: 6.6, which confirms brightness before contrast). The #681 oracle samples still pass. CPU and GPU. The positive curves' remaining 5-8/255 needs a better curve family (a two-point spline fits each capture within 1.6/255), left open. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>