Re: Profiling a Press/Digi Proofing/Display/Conversion in one Profile?
Re: Profiling a Press/Digi Proofing/Display/Conversion in one Profile?
- Subject: Re: Profiling a Press/Digi Proofing/Display/Conversion in one Profile?
- From: Jim Rich <email@hidden>
- Date: Wed, 16 Jan 2002 22:45:17 -0800
On 1/16/02 9:29 PM, "Jim Rich" <email@hidden> wrote:
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On 1/17/02 1:29 AM, "Stephen Marsh" <email@hidden> wrote:
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> Our press was profiled from average readings (I am presuming). This profile
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> is used to drive our CcMmYK Epson 9000 through an ORIS ColorTuner RIP on a
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> NT box. This profile is okay for proofing (but it could be better, thus
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> re-profiling). The profile also seems to provide an acceptable softproof on
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> our eyeball calibrated/profiled systems. However, the profile is useless for
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> a CMYK conversion in Photoshop.
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> So is it possible to have the consultant produce a profile that will:
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> a) Approx simulate our average common CMYK press conditions for CTP inkjet
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> proofing (sans halftones and spot colours)?
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Yes you can. But... I think a better question might be what do you want to
color separate for a press or a prepress proof such as a Matchprint?
Profiling a Matchprint is easier than a press and in some cases you can
adjust your CTP conditions to have better agreement between the Matchprint
and your press without profiling the press. This save a lot of time and
money.
The idea is that the Matchprint technology is based on the press so they
have a fundamental relationship. One way to test the relationship between
the press and the Matchprint create a gray scale on both processes and then
plot percent dot vs density to define the tone reproduction of each
process. After you know that then change the CTP curves to make the press
more closely match the Matchprint.
Then profile the Epson 9000 and get it to match your Matchprint.
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> b) There is a separate display section of a profile - correct? Where does
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> this enter the picture, will the consultant spend extra time or whatever to
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> ensure that is close?
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If the profile is made correclty and all of the components of your imaging
system are in place a profile should work quite well. So you must have a
good viewing condition that includes a light booth with a dimmer.
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> c) And finally, can the same profile create a CMYK separation that works for
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> a press? I have to presume that the current profile is good for the RIP but
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> is not meant for actually creating the separation - as the separated results
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> are crazy.
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If I understand your question, it will depend on how close your prepress
proof is to your presss. If thery are similar the answer is yes.
My .02.
Jim Rich