Abstract
We agree with the main point of Rolf Kuehni's letter; time is ripe to improve the standard lightness metric L*. We discuss items he raised: scientific literature supporting both log and power laws of lightness, the relation of math theory and curve fitting, crispening, different models of lightness for different situations, and “who cares?” © 2012 Wiley Periodicals, Inc. Col Res Appl, 39, 105–106, 2014
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