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FINE ART PHOTOGRAPHY – POSTGRADUATE
RESEARCH AND DEVELOPMENT JOURNAL
COLOUR MANAGEMENT
corollary of Luminosity blending, it begs the question
whether Color can be extracted as easily as
Luminosity. Initially the extraction of the hue and
saturation of the image appears to be relatively
straight forward. Duplicating the image layer and
filling with 50% grey blended on Luminosity does
remove the luminosity from the Layer, in the same way
that filling with 50% grey blended on Color removes the
color, or so it would seem.
Blending the colour layer on Color above the
background layer reveals no difference just as the
Luminosity layer blended on Luminosity reveals no
difference. The combined luminosity layer blended on
Luminosity and Colour layer blended on Color do add
up’ to exactly the same values in the original Color
Checker. They are the same colours. However blending
the extracted colour layer on Color is not necessary if
it sits below the Luminosity blended luminosity layer in
the layer palette. The gamut of most pictorial subjects
can also be successfully separated into their luminosity
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