RE: Monitor Accuracy Options
RE: Monitor Accuracy Options
- Subject: RE: Monitor Accuracy Options
- From: Roger Breton <email@hidden>
- Date: Wed, 05 Jan 2011 23:27:25 -0500
That "pinkish grays" story is really indicative of some unwanted or
unexpected interaction of the print with the ambient lighting.
I was looking at two sets of prints, today, under two different light
sources, both prints made to SWOP2006_C3 with AbsCol. 1.5 dE avg, max 4 to
C3. Both made on two different inkjet media, with two different generation
of Epson inks, out of two different output systems, iterated with different
instrumentation. Under JNL lighting, the differences in the prints were one
way while under GTI lighting, the difference was another way. Still, we
could see some print differences common to both light sources -- reassuring.
The neutrals, in particular, were rather different. Under one light, proof X
appeared greenish while under the other light, proof X appeared more
neutral, perhaps a tad blue. The one salient feature, though, was that the
neutrals retained their respective appearances across both light sources,
with one type of lighting bringing out more of that greenish appearance than
the other. Good or bad, that visual "effect" remained and, IMO, is related
to how both tubes excite the different colorants in the respective
substrates differently.
Best / Roger
-----Original Message-----
From: colorsync-users-bounces+graxx=email@hidden
[mailto:colorsync-users-bounces+graxx=email@hidden] On
Behalf Of Randy Zaucha
Sent: January-05-11 10:00 PM
To: email@hidden
Subject: Monitor Accuracy Options
Yes, the PDF's are real Adobe RGB. When the rendering is opened, it is
assigned sRGB and converted to Adobe RGB. All destination space assignments
for PDF creation is Adobe RGB.
As far as the lighting goes, to see if the lighting was the reason for the
warm reds and browns I took the print next to a window sheilding it from the
office light and I even walked it outside. That was not the reason. I
encourage all who want more accurate color creation to put a viewing booth
or lamp next to their monitor. If the lighting causes problems I point it
out and tell them they have to accept it or change it. While this case is
typical with lighting making "pinky grays", the warmer red/brown shift was
so evident, I had to write this group to see if there is a way to solve or
edit this color shift.
Randy Zaucha
Managed Color
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