by Mike McNamee Published 01/04/2017
We have chosen to highlight the errors in the chroma (saturation) component of the Macbeth patches simply because they are unusually good. The chart is normally set on ±10 Lab points but the errors around the gamut are so small that the chart can be comfortably fitted at ±3 Lab points. The errors are shown around the colour wheel on an Lab plot – yellow at the top, progressing clockwise through orange, red, magenta, blue, cyan and then green. Overall the data indicate the good gamut coverage of the Epson HDR K3 ink set and the ability of the baryta coating to ‘hold’ on to the saturation without distortion.
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