Re: Fogra Wedge v.3.0
Re: Fogra Wedge v.3.0
- Subject: Re: Fogra Wedge v.3.0
- From: Mike Strickler <email@hidden>
- Date: Fri, 12 Sep 2008 09:42:24 -0700
A bit of hurrying on my part: I should have realized you were
speaking only of the Fogra standards for the wedge, not standards for
certifying a system (with a full profiling chart). Here it would of
course be a max dE of 6 for all patches. And that, of course, can be
a pain, as one patch of, say, 5, can indeed make a bad impression or
even alarm a customer though it might melt into insignificance down
in the bottom 1% on a full chart. It also points out the problem of
balancing the need to get as much data (and analysis) as possible
against the need to verify proofs quickly as "passed" and get them
out the door. It's not a perfect system by any means. There is enough
controversy about proof standards here in N. America that we still
have no equivalent official standard for passing or failing a proof
(though we do have them for certifying a system). The Idealliance
proofing study just wrapping up hopes to move us toward that goal soon.
Mike Strickler
On Sep 12, 2008, at 3:58 AM, email@hidden
wrote:
Well, this raises a lot of issues that can't be addressed at this
time, at least not by me. As we're in N. America I can't say without
looking it up whether Fogra requires a max dE of 6 for all patches
or for the best 95%, which is a better here--for good reason.
Nonetheless, at the end of an installation we're always safely below
6 for all patches. When I do occasionally get a call that a proof has
failed it is never for max dE and is always some printer issue that
causes a spike in one color channel and tints composed predominately
of that color.
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