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18. Metamerism
- the apparent equality of surfaces and decors -
When different materials, different coloring and printing techniques with differing color sub-
stances are used, slight differences in color are almost bound to occur under different lighting
conditions (neon effect, shop lighting effect or exhibition effect are terms referring to such
typical phenomena).
For color comparisons of single-color décors, colorimetry is a useful instrument. Here, a so-
called metamerism index is determined as comparison value between two samples – usually
from a daylight source to an artificial light source. Combined color and gloss-measuring
instruments are used for this purpose.
On the other hand, a visual assessment must be made for wood décor, structural décor and
pattern prints because a purely metrological color comparison measurement cannot be prac-
tically implemented.
The gloss level, the textures and the foil structure (pores, stripes, etc.) and the roughness in
particular have further influence on the appearance and comparability of surfaces.
Differences in the color effect of the individual wooden parts of the bed are therefore natural
and do not represent any cause for complaint.