RE: colorsync-users digest, Vol 3 #1213 - 5 msgs
RE: colorsync-users digest, Vol 3 #1213 - 5 msgs
- Subject: RE: colorsync-users digest, Vol 3 #1213 - 5 msgs
- From: email@hidden
- Date: Tue, 10 Feb 2004 09:13:37 -0600
I agree with Peter Kleinheider. Many of your different color builds will be
created with color that was not created by the client. I can't imagine
trying to explain why ther eis a red dot in a color that the client created
with just cyan.
You must first determine what your target is. IE Gracol TR004. Then finger
print your presses. You now have the LAB data from your Gracol target in
which to adjust your plate curves.
Using LAB data is extremely important especially when printing the higher
line screens such as Stochastic.
Ritch Lefevre
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Today's Topics:
1. Re: SWOP as religion (Peter Kleinheider)
2. Re: SWOP as religion (Henrik Holmegaard)
3. Re: SWOP as religion (Dan Caldwell)
4. Re: PM Profiles not available in Agfa FotoLook scanner software
(email@hidden)
5. HP4600dn laser profiles (Ryan Thrash)
--__--__--
Message: 1
From: Peter Kleinheider <email@hidden>
Subject: Re: SWOP as religion
Date: Mon, 9 Feb 2004 09:35:56 +0100
To: email@hidden
Hi all
I can not realy belive this:
Am 09.02.2004 um 05:42 schrieb Dan Caldwell:
>
Most shops still apply a curve at the plate setter. Some are beginning
>
to
>
set up linear and build a profile to handle this compensation. These
>
shops
>
use a profile to profile (mostly CMYK to CMYK) transformation before
>
the
>
plate setter or in the CTP Rip instead of the curve.
That would mean to me a new Separation with a changed grayballance and
blackgeneration depending on the profiles used. This is what you do for
Proofers, but I think it is not a good idea for Plates: Imagine a 100%
Yellow Area for example that then has suddenly has a little bit of
Magenta in it because of the transformation.
Or do you mean a pure gradiation change?
best regards/mit freundlichen Gru:ssen
Inpetto - Peter Kleinheider
PrePress Consultant & Workflow Programming
St. Po:ltnerstr. 26
3130 Herzogenburg
AUSTRIA
________________________________
Mobil: +43/650/2600099
email@hidden
--__--__--
Message: 2
Date: Mon, 9 Feb 2004 10:11:41 +0100
Subject: Re: SWOP as religion
From: Henrik Holmegaard <email@hidden>
To: email@hidden
Dan Caldwell <email@hidden> wrote:
>
These standard profiles will provide us the tools we need to proof
most any
>
job. As mentioned above it is up to the printer to be able to print to
these
>
standards on their equipment.
Yes! Let the press operator and the printing press manufacturer address
the ability of the printing press to print to sufficiently narrow
tolerances that the process can be statistically sampled by an ICC
profile and simulated on a studio inkjet with the appropriate
consumables and cross-rendering. The printing press is not the concern
of the desktop, it has other concerns to address.
The original concept advanced in the mid-1990s was to separate in
prepress (OPI) to a set of some ten standard printing conditions, and
reseparate at the press with device links. This concept was called
'virtual CMYK'. The standard objection is that because of the
limitations imposed upon device links by the ICC Specification, and
because of the limitations imposed on ICC profiles in the PostScript
pipeline, reseparation only works if all objects in the page-based
document reflect the same gamut and separation. And in an early binding
approach it is as likely that all CMYK objects will reflect the same
gamut and separation as that Tinkerbell will drop by for tea -:).
That said, the issue on the desktop remains remote proofing. Ever since
OPI arrived it has been possible to conduct capture services, assembly
services and print services in separate schedules and at separate
sites. Each attempt to start a debate about remote proofing in
distributed color workgroups has been stonewalled, presumably because
only one RIP manufacturer has the technology. But that does not change
the fact that the discussion is increasingly important now that the
concept of colorimetrically controlled printing conditions has started
to come across.
Thanks,
Henrik
--__--__--
Message: 3
Date: Mon, 09 Feb 2004 07:50:51 -0800
Subject: Re: SWOP as religion
From: Dan Caldwell <email@hidden>
To: ColorSync List <email@hidden>
On 2/9/04 12:35 AM, "Peter Kleinheider" <email@hidden> wrote:
>
>
That would mean to me a new Separation with a changed grayballance and
>
blackgeneration depending on the profiles used. This is what you do for
>
Proofers, but I think it is not a good idea for Plates: Imagine a 100%
>
Yellow Area for example that then has suddenly has a little bit of
>
Magenta in it because of the transformation.
>
Or do you mean a pure gradiation change?
Yes Peter a 2D graduation change with just curves. If they did use a profile
to profile change it would be on a CTP system that was set up linear and
most likely done preserving black generation.
======================
Dan Caldwell
840 Nolbey Street
Cardiff by the Sea, CA 92007
home 760-436-0403
office 760-942-7434
cell 760-801-2192
Lat 33001.730 North
Lon 117016.448 West
Elva 204 ft
======================
--__--__--
Message: 4
To: Steve Upton <email@hidden>
Cc: "ColorSync Users " <email@hidden>
Subject: Re: PM Profiles not available in Agfa FotoLook scanner software
From: email@hidden
Date: Mon, 9 Feb 2004 13:02:19 -0600
>
Open up the profile in PM4's Editor. Go into the info area and
>
change the type to "Transmissive". This flag is used by the AGFA
>
software if I remember correctly.
Unfortunately, the FotoLook software is a bit more clever than that. Even
with the type & creator codes mirroring the existing Agfa/Imacon profiles
(created in ColorTune I've been told) and the "Transmissive" flag set in
PM Edit, the profiles I make in PM do not show up as a choice in the
scanner software. I think the only way to accomplish this feat is to
generate the scanner profile in ColorTune...or just apply the bloody thing
in Photoshop after the fact. Anyway it was a good try...
Eric Bullock
Color Guy
Hecht's/Strawbridge's Advertising
685 N. Glebe Road
Arlington, VA 22203
703.247.2391
email@hidden
--__--__--
Message: 5
To: email@hidden
From: Ryan Thrash <email@hidden>
Subject: HP4600dn laser profiles
Date: Mon, 9 Feb 2004 16:33:22 -0600
Anyone have experience with this particular printer. HP's support is
less than helpful in determining how to maximize the gamut and the
appropriate driver settings to get "pure" CMYK channels.
I'd like to be able to use it for use as "just good looking" short run
work in an OS X Panther environment, with files coming from the latest
Adobe CS apps.
Driver settings will be step one, but so far I can find no magic
combination that produces anything remotely accurate or in the
ballpark.
Suggestions?
--
Best regards,
Ryan Thrash
Studio Vertex
214-742-8220 x 18
214-682-5050 - cell
801-469-5666 - fax
http://www.studiovertex.com
--__--__--
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