Digital BW, The Print

Another way to describe metamerism-

You make a print and it looks good under your 5K viewing hood. 

You hang it in that gallery with the tungsten lights. Sure, the highlights appear warmer, but the shadows should appear with the same degree of warmness. If the print suffers 
from noticable metamerism, the highlights will go one way, magenta perhaps, and the shadows may go another way, green perhaps. All the tones do not move in perfect 
relationship to eachother. Some go one way, others go another way.