Techkon SpectroDens Manual page 67

CIE L*u*v*, CIE L*C*h* uv, CIE xyY and DIN Lab99
The Premium-version of SpectroDens enables the display of additional color spaces,
which might be used mainly in industries outside printing:
CIE L*u*v*, CIE L*C*h* uv, CIE xyY and DIN Lab99.
CHAPTER 2
– Measurement functions
The ISO-Check function features the use of
the SCCA reference value correction (select-
able in the ISO-Check setup).
You will find a comprehensive description of
the SCCA function on page 59.
Different formulas for calculating the color
distance ∆E* can be selected as well. The
Euclidean color distance ∆E* a*b* is the most
widely used, although it is criticized that for
certain areas in the color space the visual per-
ception of color distances does not match the
∆E* a*b* color distance accordingly.
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