RE: ColorPort Updated to 2.0.5
RE: ColorPort Updated to 2.0.5
- Subject: RE: ColorPort Updated to 2.0.5
- From: Roger Breton <email@hidden>
- Date: Wed, 02 May 2012 20:26:26 -0400
Dear Ethan,
Thank you for taking the time to explain your technique. I think I got the
idea and I shall give it a try.
Best / Roger
-----Original Message-----
From: colorsync-users-bounces+graxx=email@hidden
[mailto:colorsync-users-bounces+graxx=email@hidden] On
Behalf Of Ethan Hansen
Sent: May-02-12 1:16 PM
To: 'colorsync-users List'
Subject: RE: ColorPort Updated to 2.0.5
Roger,
I got the new Colorport (Windows version - not brave enough to go through
the hassle of using a Mac for this) working on a Spectroscan with old
targets. I needed to create a new ColorPort target to do so. The key was
rotating the patch set 90 degrees counter clockwise.
I started with a MeasureTool format chart, did the rotation using ColorLab
(Mirror, followed by Swap Rows/Columns), imported the patch set into
ColorPort, and fiddled around with the paper size, margins, and patch size
until the ColorPort version matched the real target. Even though ColorPort
claims to support Landscape orientation , I could not get it to do so. I
used a page size of 8.5 x 11.5 inches, no margins, portrait orientation. The
chart I tested required the patch size be set to 6.25mm (nothing like mixing
your units!).
ColorPort measured away happily. The measurement quality, however, was
useless. ColorPort only rarely re-calibrates the Spectrolino. Our charts
have a number of repeated patches. MeasureTool shows each series of repeated
patches agreeing within 0.05dE of each other. Measuring the same chart with
ColorPort 2.05 showed the effects of thermal drift. The worst offender were
two identical patches that ColorPort reported differed by 1.21 dE. A 40%
increase in measurement speed does not justify a 25x increase in measurement
error.
Cheers,
Ethan
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