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Coating Samples and Metamerism: Compare Under Relevant Light Sources
Two samples can match under one light source and differ under another. This is a reason to define lighting in appearance approval.
Updated · NANOLAB Knowledge
Practical approach
Use suitable controlled illuminants and instrument methods when colour matching matters.
A treated panel accepted in one room may appear different beside its reference under another lighting system.
Decision limits
Do not assume a single daylight photograph establishes a match under every viewing condition.
Related guidance
- Light Colour Temperature and Defect Visibility in Paint Inspection
- Choosing Microfiber Towels for Ceramic Coating
- Coating Viscosity Samples: Record the Container Geometry
- Reflection Haze and Transmission Haze: Choose the Right Optical Question
Method reference: Konica Minolta: metamerism. References describe their stated methods or products; they do not certify NANOLAB products or establish compatibility with an unlisted surface.
Ask NANOLAB about the exact product and intended use. Use the current product documentation for formulation-specific instructions.
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Light Colour Temperature and Defect Visibility in Paint Inspection
Different inspection lights can reveal different aspects of a finish. Keep the light setup identified when comparing polishing or coating results.
Choosing Microfiber Towels for Ceramic Coating
Choose towels by their role in the coating process, cleanliness and finish suitability rather than assuming the thickest towel is always best.
Coating Viscosity Samples: Record the Container Geometry
Some viscosity methods depend on the sample container and immersion arrangement. Changing the vessel can change the measurement conditions.