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Photoshop's absolute mode scales each range's ink change by how much the ink can still move: adding ink by min(1, 2 x (1 - ink)), removing it by min(1, 2 x ink). PhotoCraft added the full percentage and clipped, so Neutrals Cyan +50 darkened a grey 64 to 0 instead of 32. Measured in Photoshop 27.11 over every range x ink at +-50 (72 cases): all within 1 level now (8 of 72 within 3 before). CPU and GPU paths. Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>