July 16, 2014
Metamerism exists when two materials match under some lighting conditions but not under other lighting conditions. It is the occurrence of colors which have different properties appearing to match under a particular light source, yet under other light sources they appear to mismatch. This can be a serious problem for manufacturers. If you combine different materials or materials from different sources into one product, metamerism may occur. For example, you want all the parts of a car that are the same color to match whether it is a sunny or cloudy day. Or if you bought a suit you’d want the jacket and pants to match the same way in daylight as they do under the fluorescent lights of the department store.