Color Measurement on Metalized Substrates

On the other hand, a sphere (diffuse/8°) instrument can provide accurate and repeatable measurements of these substrates thanks to its diffuse illumination. The mirroring effect of a metallic substrate is reflected by the coated sphere of the instrument, which will yield an adequate amount of light for the sensor to measure. Because the sphere instrument is able to measure the reflected light, it will return measurements that are very close to what the eye would see, since printed foils and metals are typically observed in lighter surroundings to take advantage of its reflective nature.