SCI and SCE generally only appear in the setting options of d / 8 color measuring instruments. SCI refers to the specular light method, which is generally used by manufacturers who study the properties of color and do not care about the gloss of the sample surface to which the color is attached. Such as paint factory. SCE refers to the method that does not include specular light, and is generally suitable for those samples that are directly observed by people and require very close measurement results and visual inspection, such as home appliance housings.
Different color measuring instruments may have differences in the direction of lighting and receiving light. Different lighting and receiving directions are actually the methods of simulating the color we look at in real life. Generally, we call them optical structures. The common ones are d / 8, d / 0, 45/0, etc. Generally, d lighting is used more, because it represents diffuse lighting (diffuse), which is more consistent with the conditions of viewing colors in our actual life. There is no direct comparability or conversion formula for the data measured by instruments with different optical structures. After all, when we actually look at colors, the color sense obtained by different viewing methods is not the same.
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