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ArcCalibrator Updated Script?
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Bigjim9  
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 More options Feb 9, 6:34 pm
From: Bigjim9 <jthomp...@surewest.net>
Date: Mon, 9 Feb 2009 15:34:35 -0800 (PST)
Local: Mon, Feb 9 2009 6:34 pm
Subject: ArcCalibrator Updated Script?
Is there an update available for CS4 using ACR 5.2?

I will try again, but I just attempted a calibration using my Greta G.
MacBeth color Checker. After about 10 minutes of checking, CS4
crashed. I was warned ahead of time that the ACRCalibrator I have is
not supported, but it is the latest version I found on your site.

Thanks,
Jim


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steve sprengel  
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 More options Feb 9, 7:15 pm
From: steve sprengel <steve.spren...@gmail.com>
Date: Mon, 9 Feb 2009 18:15:48 -0600
Local: Mon, Feb 9 2009 7:15 pm
Subject: Re: [acrcal] ArcCalibrator Updated Script?

I can't speak for Tom, but as a long-time user, I would suspect Tom will not
release any more updates to the script, since, as you can see, it is several
versions of ACR behind, already.

The version of ACR makes a difference to the script because it has to zero
out all the sliders and new versions of ACR can add new sliders.  If the
script warns it is not compatible and you choose to run, anyway, then it
doesn't zero out the sliders (like the contrast curve to linear is the main
one), so it can work, ok, but to have it work exactly the same you have to
zero out the curve and make sure other things are, yourself, before running
the script.  I don't know how compatible or not the script is with CS4 since
I quit using it before upgrading.  I would suspect you're running out of
memory or something about OpenGL isn't quite up to par and running the same
thing over and over is running out of resources.  You could try it with
OpenGL turned off.

However, the main recommendation is to not use the script, anymore, because
ever since Adobe Labs released the DNG Profile Editor, which lets you create
a custom camera profile from a Color-Checker with up to two color-tables the
same as the Adobe profiles have, not just a set of slider values relative to
an existing profile like the script does, the need for such a script is
diminished, and Tom seemed to have abandoned it, some time ago, probably as
soon as he know Adobe was working on the DNG Profile Editor months before it
was released.  While the name DNG Profile Editor includes the term DNG, it
is really for any type of RAW file, so don't think you have to convert to
DNG for it to work.

The DNG Profile Editor is available from:
http://labs.adobe.com/wiki/index.php/DNG_Profiles

with more information, here:
http://labs.adobe.com/wiki/index.php/DNG_Profiles:Editor

The beta 2 camera-profiles are obsolete as these profiles come with
Photoshop and Lightroom, already, so don't download and install the beta
profiles, just the profile editor beta.

The two ways to use the profile editor are to create a dual-color-table
profile with the CC photographed in 2850K and 6500K light sources, OR create
a single-table (or both tables the same) profile that is specific to
whatever color light you are balancing for.

I have a dual-color profile I use for most things where ACR/LR interpolate
between the two profiles based on the WB of the image, and then a few
specialized profiles for particular lighting situations (such as a studio
setup or sunset) that I want as good as possible.  The hardest part about
creating a dual-color profile is getting the WB of the lighting exactly
2850K and 6500K.  I don't have any calibrated light workstations so I had to
just take pictures in various incandescent and hazy sky situations until the
WB was close and then used the two closest shots I had.

If you insist on using a script like ACR Calibrator, there may be ones from
Rags-Gardner or Tindemans that are compatible, so you can Google for those.


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Bigjim9  
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 More options Feb 9, 7:38 pm
From: Bigjim9 <jthomp...@surewest.net>
Date: Mon, 9 Feb 2009 16:38:28 -0800 (PST)
Local: Mon, Feb 9 2009 7:38 pm
Subject: Re: ArcCalibrator Updated Script?
Thank you Steve for your quick response. I will check into the DNG
Profile Editor and see if I can make it work for me. I have been
reading Martin Evening's book, "Adobe Photoshop CS4 for Photographers"
in which he advises the script can be used with CS4, so when I came to
the site I was surprised not to see a CS4 compatible release.

Thanks again,  Jim.

On Feb 9, 4:15 pm, steve sprengel <steve.spren...@gmail.com> wrote:


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steve sprengel  
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 More options Feb 9, 8:07 pm
From: steve sprengel <steve.spren...@gmail.com>
Date: Mon, 9 Feb 2009 19:07:10 -0600
Local: Mon, Feb 9 2009 8:07 pm
Subject: Re: [acrcal] Re: ArcCalibrator Updated Script?

That wouldn't be the first publication that had misleading information about
the script, and suggests a rework of a CS3 version book, perhaps.

One book was written using information about the beta version of the script
but wasn't published until the 1.0 version was out and there were
differences in the recommendations in using it.

Another training DVD that you have to pay for gave the wrong path-order (an
X instead of a U) when clicking on the colors which lead to totally bogus
results.

The script can probably be made to think it is compatible with CS4 by
adjusting the various version number checks in the script to check for 5.2
by loading the .jsx source code into the ExtendScript Toolkit Editor, but
the fact it crashes is something that would still be a problem for you,
though it may not be a universal problem, since CS4 seems to have some
glitchy things with various video cards that aren't the latest and greatest.

A big benefit to using the DNG Profile Editor is that it takes a fews
seconds instead of 10s of minutes to compute the profile.


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