Re: A metameric match between display and print? [was: CMY Display coming?]
Re: A metameric match between display and print? [was: CMY Display coming?]
- Subject: Re: A metameric match between display and print? [was: CMY Display coming?]
- From: Ernst Dinkla <email@hidden>
- Date: Tue, 11 May 2010 09:50:51 +0200
Roger Breton schreef:
I understand that point. But my argument is that if we should ever be able
to
match on these displays a set of real-life CMY inks, along with their
real-life
behavior (which would seem to be the point of the whole effort), then we
still wouldn't have a good way to generate proper blacks, since a
100C-100M-
100Y mix of the chromatic inks by themselves is always imperfect in real
life,
and produces a dark gray at best, if not brownish -- not the deep,
reasonably
neutral blacks that we would expect in a well-made print.
I'm not sure Marco whether CMY filters would necessarily inherit the same
imperfect behaviour as CMYK inks, i.e. not making "perfect" black when
combined. But it's a valid point, nevertheless, and I understand your
argument. I don't have enough information to follow this through, obviously
:(
Best / Roger
If chromogenic CMY photography has some analogy to CMY displays then
there should be enough contrast possible with just CMY in transmissive
light displays, it will be harder to achieve it with reflective light
displays yet the last could create the better metameric condition for
proof and softproof. At least for the CMYK press. For today's N-color
wide format inkjets I guess there's no gain in switching to CMY
displays. The electrowetting technology allows displays that can be both
transmissive and reflective at the same time so is more flexible than
sketched. An extra K layer in the display is possible as well. Before it
will be a sophisticated CM controlled system will take time though.
Another thing is the creation of white, the CMY colored oil or water,
which one depends on the tecnnology, has to shrink within a clear
display. Quote from the Gamma Dynamics pages: The reservoir comprises
<5-10% of the viewable pixel area and therefore the pigment is
substantially hidden from view. I find that a very optimistic statement.
With transmissive screens they may get away with that but in reflective
screens it doesn't work that way. It would be worse with a CMY+K
reflective screen.
In Gamma Dynamic's colored water system pigment inkjet inks were used in
the first attempts. Wonder what the fade resistance is of the dispersed
CMY(K) colorants used if compared to the dry RGB colorants used so far,
either water or oil based. And where colorants in offset inks face a
short period of contact with water, in electrowetting displays this is a
continuous condition.
--
Met vriendelijke groeten, Ernst
Dinkla Gallery Canvas Wrap Actions
| Dinkla Grafische Techniek |
| www.pigment-print.com |
| ( unvollendet ) |
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