Re: Oris Color Tuner
Re: Oris Color Tuner
- Subject: Re: Oris Color Tuner
- From: Terry Wyse <email@hidden>
- Date: Tue, 23 Nov 2004 14:27:52 -0500
On Nov 23, 2004, at 12:37 PM, Daniel Shaffer wrote:
We have an Epson 9600 printer with Oris RIP and an ICColor calibrator.
We
have been sending the ORIS Color Tuner Testform v5.0 to are printers
to get
a profile from them. But so far I haven't been able to get any of
the
test charts from the printers below an average Delta E of 1.0. Does
anyone
have any suggestions???
First off, an average delta e of 1.0 is PRETTY DARN GOOD as long as the
max delta e numbers are no more than about 4-6. I assume you're not
using ICC profiles but instead you're using ORIS's proprietary device
link profiles, true? You need to use their device link profiles to get
the best results.
The first thing I would look at is the proofing media you're using. In
my experience, "average" proofing papers will get you under 1.5 delta e
but usually not much below 1.0. Premium proofing papers (GMG Semimatte
and Dupont Chroma Pro XP papers to name a couple) are generally
required to get you into that rarefied air of less than 1.0 delta e, in
some cases (if the planets align just right) you can into the .5 delta
e range. Less than that and you're getting into the repeatability
limits of your spectrophotometer (that's what your iCColor is: a
spectro not a "calibrator").
Other possibilities are that the print tests you're getting back are so
"good" that they're exceeding the 9600's capability to match
accurately. Doesn't happen often, but this can sometimes happen with
pure magentas and blacks using Ultrachrome inks and a mediocre proofing
media. SWOP TR001 isn't all that tough to hit but GRACoL TR004 is
significantly more difficult requiring a combination of superior inks
and proofing media to achieve the sort of delta e numbers you're
looking for.
But that's all just a guess. :-)
Cheers,
Terry
_____________________________
WyseConsul
Color Management Consulting
email@hidden
704.843.0858
http://www.colormanagementgroup.com
http://www.wyseconsul.com (coming soon)
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