Re: Inconsistency
Re: Inconsistency
- Subject: Re: Inconsistency
- From: Mike Strickler <email@hidden>
- Date: Thu, 29 May 2008 15:23:48 -0700
We may be talking about different things. A standalone profiling app
knows nothing about ink absorption or anything else about the
substrate and leaves it up to the user to enter appropriate ink
limits where that isn't done in the RIP. But the specific algorithms
used for color matching are always the same unless you deliberately
change them and always strike their compromises according to the same
rules. That doesn't mean your results in the end will be consistent
because most of the adjustments you need for different media are
normally in the RIP. If those adjustments--ink limiting and
linearization--aren't done right the results will be all over the
map. RIPs vary a lot in how easy tis part is and how good any
included media presets are, and that can dramatically affect
consistency of the final results between different media. Perhaps
these settings are made in the bundled "profiling" module you're
talking about, but this is distinct from the profile calculation
function per se.
----------------------------------------------------------------------
Message: 1
Date: Wed, 28 May 2008 15:50:50 -0400
From: "Mark Rice" <email@hidden>
Subject: Inconsistency
To: <email@hidden>
Message-ID: <004401c8c0fc$222bda50$66838ef0$@net>
Content-Type: text/plain; charset="us-ascii"
No, I don't believe that all profiling software is consistent. What
I am
getting at is this: in a perfect world, I would be able to profile
Tyvek,
Glossy Vinyl, Photo Paper, Banner material, etc, and have all the
images
look identical. Of course, in a non perfect world, we are limited
by gamut,
ink absorption, and other factors. However, a "consistent"
profiling package
is one that attempts to make all the images look the same. With an
inconsistent package, I get images that have different color balances,
different highlight to shadow balances, and images that are
generally all
over the ball park.
One example is this: in Onyx ProductionHouse, there is a step
that they
referred to as "advanced profiling", but it is really about
generating a
gray balance. Almost every "expert" profiler says "avoid that step"
as it
produces erratic results. That is INCONSISTENCY.
Mark
My major point is that using a
RIP, and then generating ICC profiles with a third party
application, is
more INCONSISTENT than using the profile generator built into the RIP
package.
Best regards,
Mark
Are you stating this as a general rule? Wouldn't that depend on the
particular product you're using? And you mean "lower quality" rather
than "inconsistent," don't you? All profile-making software is
consistent, though some may make better profiles than others.
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