Re: The GRACoL method
Re: The GRACoL method
- Subject: Re: The GRACoL method
- From: Roger Breton <email@hidden>
- Date: Sat, 03 Feb 2007 10:43:39 -0500
Hi Dan,
> The easiest path to G7 is using an uncalibrated platesetter (can be done with
> film workflow too).
>
> Most CTP RIPs only have one area to put in a calibration curve. Agfa work a
> bit different as the plates are calibrated/linearised on their exposure box¹.
> In this case it makes no difference if there is a curve there or not.
>
> Once you print and read the P2P23xn test chart, you will have the values to
> use in the RIP.
>
> Dan Wilson
I'm just curious what kind of TVI you end up with once calibrated with G7?
I understand the gist of the method does not revolve around TVI -- far from
it -- but, once a press is in that golden G7-calibrated state, which is, for
all intents and purposes, according to humble tests, the same as linearizing
a proofer for gray balance (ends up with linear L* between dMax and dMin
with respect to CMY and K), what happens with the zillions of CMYK images
that are separated for the standard, pre-SWOP11 TVI aims, when they hit the
press: are they going to register lighter, darker or what?
There are still a lot of folks who are cranking out separations from chromes
on well-maintained drum scanner, folks who voluntarily avoid digital
photography, for good or bad, or who still regard film as the superior
reproduction medium.
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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