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Personal perception-based comparison to a physical standard
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Instrument-based comparison to a physical standard
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Instrument-based comparison to colorimetric standard
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Instrument-based comparison to spectral standard
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Instrument-based comparison to advanced spectral standard (CxF/X-4)
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PROS:
CONS:
- expensive and time-consuming personal supervision
- dependent on the person
- lighting conditions related
- uncontrolled metamerism
- no repeatability
- initial swatch-book inaccuracy
- instability of color samples (aging, dirt)
- different substrate / OBAs
- unpredictable issues of opacity, overprints and tints
- undefined matter of issues
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PROS:
- numerically expressed color differences
CONS:
- expensive and time-consuming personal supervision
- uncontrolled metamerism
- initial swatch-book inaccuracy
- instability of color samples (aging, dirt)
- different substrate / OBAs
- unpredictable issues of opacity, overprints and tints
- instrument precision and stability, inter-instrument agreement issues
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PROS:
- numerically expressed color differences
- stable color definition
- exchangeable color definition
- the possibility of remote control
CONS:
- limited color definition
- only one lighting condition specified
- uncontrolled metamerism
- unpredictable issues of opacity, overprints and tints
- instrument precision and stability, inter-instrument agreement issues
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PROS:
- numerically expressed color differences
- stable color definition
- exchangeable color definition
- lighting condition independent
- controlled metamerism
- the possibility of remote control
- trackable instrument precision and stability
- optional inter-instrument agreement harmonization
CONS:
- unpredictable issues of opacity, overprints and tints
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PROS:
- numerically expressed color differences
- stable color definition
- exchangeable color definition
- lighting condition independent
- controlled metamerism
- the possibility of remote control
- trackable instrument precision and stability
- optional inter-instrument agreement harmonization
- predictable opacity, overprints and tints
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