Re: new eye one ruler question
Re: new eye one ruler question
- Subject: Re: new eye one ruler question
- From: Rolf Gierling <email@hidden>
- Date: Thu, 23 Feb 2006 11:32:49 +0100
Hello Marco,
Am 23.02.2006 um 08:23 schrieb Marco Ugolini:
My room is not usually very bright; the rainy weather in the SF Bay
Area has
added to the darkness lately. But I noticed one day the other week,
when it
was nice and very sunny outside, with bright sunlight coming in
through the
window, that I was getting some wildly variable readings from one
measurement session to the next on some of the patches in a printed
1780-patch ECI2002CMYK testchart. A few patches (usually darker ones,
some
of them green) jumped around from one reading to the next to the tune
of 18
Delta E 2000, even! (I calculated those Delta E values by comparing
measurement sessions with the Comparing tool in MeasureTool).
This is not only your observation, but mine too.
But most worse, the same happens when calibrating the instrument.
I almost always avoid to do the calibration in an light ambient.
There is a second scenario where things go wrong: In monitor
calibration.
My guess is that there is a black calibration too, and if calibrated in
too light ambient, the results are worse.
One last observation: though my EyeOne Pro is properly seated on the
new
ruler's carriage, when I slide it across the testchart page it seems to
stick a bit, offering slight resistance here and there, enough to make
my
motion somewhat uneven. Is that normal?
Seems to be normal. I had this when moving the ruler from top to bottom.
If you have a fine rasp and aren't all thumbs you can easily fix this.
Regards
Rolf
-----------------------------------------------------
Multitools
Dipl.-Ing. Rolf Gierling
Colormanagement
Consulting - Development - Distribution
Mariabrunnstr. 16
52064 Aachen
Germany
Tel. +49 (0) 2 41 / 4 01 25 79
Fax. +49 (0) 2 41 / 4 01 25 83
email@hidden
www.multitools-online.de
Author of "Farbmanagement"
2nd Edition August 2004
MITP Verlag GmbH, Bonn
ISBN 3-8266-1382-1
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