Re: Dumb question - Printing Colorchecker
Re: Dumb question - Printing Colorchecker
- Subject: Re: Dumb question - Printing Colorchecker
- From: <email@hidden>
- Date: Wed, 26 Oct 2005 08:52:09 -0400
Hello Edmund,
Hope you had a good vacation where there is no storms, no
earthquakes, no tsunamis, no ozone holes, no uncalibrated
printers, no...
You say:
I have an image of the Colorchecker
from Danny Pascale's site, updated with my own sample's
values.
This is the L*a*b* version (I suspect!)?
If not, then have you used i1 Share to get your RGB data?
i1 Share gives you RGB in Abs. Colorimeteric (the older
versions of i1 Share gave Rel Col).
From Photoshop (File/Print with Preview...):
Let Photoshop determine colors
Printer profile: your calibrated printer profile
Relative colorimetric, black point compensation
Have you set your printer color management to "OFF" and
selected the same paper as the one used for profiling?
You may just have forgot that one after your vacation!
Hope this helps.
Oh!, since you have a new ColorChecker, could you send me
a file of the spectrum data? (Any format, ASCII, CXF, etc)
I would compare it with the average shown on the web site.
(Thanks!)
Danny Pascale
email@hidden
www.BabelColor.com
--------------------------------
On Wed, 26 Oct 2005 10:56:14 +0200
edmund ronald <email@hidden> wrote:
Hi,
O color Oracle that knoweth all, that seeth into the IR
and the
Gamma, may I beseech you to answer a question for a
human with
burnt-out neurons ?
I have a spectro (actually several) and a profiling
application
(actually several). I have Photoshop CS2, and an iEpson
2100 inkjet
printer (no RIP). I have a brand new Colorchecker from
GMB whose
squares I've measured with an i1. I have an image of the
Colorchecker
from Danny Pascale's site, updated with my own sample's
values.
I want to print the image of the Colorchecker so it
looks right. So
that when I cut it to strips and put it on top of the
original I see
little difference, square by square.
How is this best done ? Which rendering and should I be
using?
Whatever I do, some different thing goes wrong - for
instance with
relative colorimetric I get very good neutrals but
imperfect matches
of certain squares, with absolute I get bluish neutrals
etc. then
there's the question of black point compensation etc .
Please help a poor mortal who's hopelessly confused -
before I went on
vacation I used to know how to do this, now I've
forgotten all I knew
- or would you please recommend a retirement home, Dr.
Alzheimer ?
Edmund
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