Digital BW, The Print

Metamerism has become an un-expectedly significant issue in my experimenting with glossy neutral printing. I never had to worry about it with the 100% carbon printing approaches. 

In addition to the dyes for cards, one significant goal for me is to develop an appropriate glossy medium that can hang near my Eboni-6 matte prints and have them both look good under varying lighting conditions.  

The energy-efficient CF and LED lights are major contributors to the problems I'm having reaching this goal.  

While I knew the dyes reacted relatively poorly to fluorescent lights, the extent of this metamerism with the older fluorescent lights (CRI 75) surprised me.  They can have a major green/blue/cyan shift. 

I have also been surprised by the extent of the metamerism I see in prints made with neutralized carbon plus LC & LM.  There seems to be a significant reddish shift under the new LED lights.  Of course, the more color in the print, the greater the problem seems to be for B&W.


Is there an easy way to objectively measure and describe the degree of metamerism?




Paul
www.PaulRoark.com