OK, so I did my experiment:
- Epson P900, OEM inks
- Only used PK, LK, and LLK on Epson Premium Luster
- Calibration printed at 70% density
- Lmin of LK was 55% step of K
- Lmin of LLK was 25% step of K
- Created curve #1, K=100%, LK=55%, LLK=25%. All limits at 70
- Created curve #2, K=100%, LK=55%, LLK=0.55 * 0.25 = ~14.
- Figure of curves below shows differences in Curves 1 and 2. But not particularly instructive in-itself.
- Figure of printed L vs 5% steps much more decisive. The method of referencing LLK to LK and reflecting back to K is?much closer to linear than my previous undertanding of the method.
- I kept "Gray Curve" settings at Highlight = 5, Shadow = 5, no Overlap, and Gamma =1. The highlight and shadow values may impact results.
- I learned something.
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