Re: Colorsync-users Digest, Vol 8, Issue 12
Re: Colorsync-users Digest, Vol 8, Issue 12
- Subject: Re: Colorsync-users Digest, Vol 8, Issue 12
- From: david wollmann <email@hidden>
- Date: Wed, 19 Jan 2011 14:33:21 -0700
Hi,
Thank you very much for the link. Very interesting reading, some good
info, I enjoyed it.
DAvid
On Jan 17, 2011, at 1:03 PM, email@hidden
wrote:
Message: 1
Date: Mon, 17 Jan 2011 14:51:07 +0100
From: Fons Put <email@hidden>
Subject: RE: Comparison of 2 spectros using Delta e (Fons Put)
To: "email@hidden"
<email@hidden>
Message-ID: <705AC5B787DAC94CB8FD862F2FA30865F60DA6DE@SBS>
Content-Type: text/plain; charset="us-ascii"
Back in 2008, we carried out a study on the inter instrument
agreement of spectrophotometers. You can find a summary on our
website:
http://www.graphicbrain.com/studies-by-vigc/spectrophotometer-nightmare/
What could you learn? I think following conclusions could be
important:
1. Each brand of spectrophotometer has it specific behaviour
2. The light source of the spectrophotometer is an important
component regarding to the accuracy: for example, gas filled
tungsten light is not the best choice for accurate measuring of dark
violet/blue colors.
3. The white calibration patch should be in good condition to
achieve a minimum accuracy.
4. Make a distinction between proces control (delta E) and visual
assesment (delta E 2000 or others) to communicate color differences
Regards,
Fons Put
Senior Consultant
Flemish Innovation Centre for Graphical Communication
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