Lighting mode D8 and D0 are two different lighting conditions used in color measurement. Their main differences are as follows:

D8 Lighting mode:

Light source Angle: In D8 lighting mode, the Angle between the light source and the observer is 8 degrees. This means that the Angle of incidence between the light source and the sample surface is 8 degrees, and the viewing Angle of the observer is also 8 degrees.

Scope of application: D8 lighting method is mainly used for surface color measurement, especially for solid surface color measurement, such as coating, plastics, textiles, etc.

Reflection characteristics: Under D8 illumination mode, the light reflected on the sample surface mainly comes from the scattering of incident light and surface reflection, which has good masking performance and can reduce the impact on the surface defects and textures of the sample.

The difference between lighting mode d8 and d0

D0 Lighting mode:

Light source Angle: In D0 lighting mode, the Angle between the light source and the observer is 0 degrees. This means that the light source illumes the sample surface vertically, and the observer’s viewing Angle is also 0 degrees.

Scope of application: D0 lighting method is mainly used for color measurement of transparent materials and liquids, such as glass, liquid solutions, etc. It is also suitable for measuring the color of transparent coverings on solid surfaces.

Reflection characteristics: Under D0 illumination mode, the color of the sample surface is mainly reflected by the incident light, without considering the influence of scattered light. This lighting method is more suitable for color measurement of transparent materials and can provide more accurate transparency and color information.

The difference between lighting mode d8 and d0

The D8 illumination method is suitable for most solid surface color measurements, while the D0 illumination method is suitable for transparent materials and liquids. The choice of the appropriate lighting method depends on the type of sample being measured, the desired measurement results, and the setup of the instrument. In practice, the corresponding lighting method should be selected according to the specific needs, and ensure that the measurement is carried out in accordance with the relevant standards and specifications.