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Digital BW, The Print

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metamerism problem

2002-10-08 by Bill Agee

note: I posted this on the archival color group, but then thought 
that this group might have some insight since I am using black and 
white images...



I am making toned prints from black and white negatives using the MIS 
archival inkset and substituting the extended Y ink because of the 
increased fade resistance. I use either photo rag or EHM.  For the 
most part, no metamerism when using blue or green tones, however, 
when I do sepia, there is a pronounced green shift under north window 
light.

My technique for toning is one of the standard ways to tone black and 
white in RGB mode...that is to add a new layer and fill it with a 
color, then change from normal to color or hard light or color burn 
and reduce the opacity in the color layer until I get what I want.

I suspect that the culprit is the yellow ink.  Has anyone used both 
MIS pigment Y inks, regular or extended and noticed if one is more 
prone to metamerism?

Additionally, has anyone using a 2200 / 7600 / 9600 with the 
Ultrachromes tried this technique and could pass any information on 
as to whether they have metamerism problems or not?

I may have to give up inkjet for this project and go to Lightjet 5000 
with the crystal raster paper If I can't find an inkjet set that 
works...

Only other thing I can think of is to use the MIS-VM inks to get the 
sepia, however, some of the layer techniques wouldn't work without 
cmyk inks...

Bill Agee
-- 

bill agee studio
capistrano beach, ca / laguna beach, ca

http://www.redsilver.com

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