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Digital BW, The Print

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Re: New Epsons: metamerism (was: Black ink info on Epson 7 ink sets)

2002-07-25 by grdglass@aol.com

CD,

I wanted and hoped this one would do it all -- one printer, color and b+w, no 
metamerism, no CIS's -- you know, plug 'n play...push one button :)  It is 
still early and maybe it will work out better than the one sample b+w print I 
saw.  If not, I would stay with quads.  Maybe get a 2200 for color.

Helene

<< >I also hear that custom profiles improve these printers but I don't think
>a 
>profile can eliminate metamerism which is a function of the inks used.
 
It can't eliminate it, but a profile can be used to steer it; to make the 
print look good under a given light source, or to compromise for a range of 
light sources. Generally you give up on north light and fluorescent entirely, 
and focus of reducing daylight green, by increasing tungsten magenta to see 
if you can get a print that is tolerable throughout that range. If not, you 
narrow your range, and shoot for a tighter balance, under a narrower choice 
of lights, say tungsten and halogen. 

This can be accomplished with settings or sliders in the profiling software 
(the magenta>green slider in ProfilerPLUS and ProfilerPRO does a tolerable 
job of this for color work, at least) or for more exacting control, a profile 
editor can be used. I tweek the curves in DoctorPRO until I get the balance I 
want at all levels of gray without unintended crossovers, under the desired 
lighting. >>

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