RE: Matte Lam Profiles
RE: Matte Lam Profiles
- Subject: RE: Matte Lam Profiles
- From: Hanno Hoffstadt <email@hidden>
- Date: Mon, 18 Aug 2008 18:14:58 +0200
Bob,
...one of these "yes, but" answers...
Yes: Assign the NO LAM profile to the CMYK images which have the
LAM profile.
This keeps the CMYK numbers unchanged (which should go on press as
they are, since your LAM proof assumed exactly that).
Assigning changes only the color interpretation to look like the CMYK
data printed without lamination, as you observed.
I'm not familiar with the RIP, but proofing rips usually have an
override which assigns the NO LAM profile regardless of the embedded
CMYK profile.
But: in your Photoshop "emulation", there is no need to convert.
(Which would be a no-op anyway, since you would convert from the
assigned NO LAM profile to itself.)
Best regards,
Hanno
(BTW, please cc: me as I'm in digest mode, thanks)
On Mon, 18 Aug 2008, Robert Rock wrote:
> Terence and Hanno,
> Back to the matte lam profiles.
>
> The RIP being used by the prepress house in Korea by the way,
> which Terence inquired about, is Harlequin RIP Genesis Release 72r1,
> by Global Graphics Software.
>
> After digesting all that you both said, I absolutely see how Scenario
> #2 makes much more sense. Converting to the LAM profile right from
> the start keeps us inside that color gamut for the entire process,
> rather than letting client adjust colors in a larger gamut and trying
> to squeeze it down later. Thanks for pointing that out, I'm clear on
> that now.
>
> So after final approval on the images, which have the LAM profile,
> would the process then be similar to in Photoshop of ASSIGNING the
> NO LAM profile, and then converting to the NO LAM profile, and
> sending THAT image to press proof (for press room guide), and
> ultimately to press for printing? I'm assuming that in their RIP
> there is a way to output using the NO LAM profile on the fly, but
> in my limited Photoshop mind, I'm trying to wrap my head around the
> process and how it would work in my smaller universe. When I do that
> myself, i.e., take an image that was converted to the LAM profile,
> and then ASSIGN the NO LAM profile, the image very noticeably
> brightens up, which is what it obviously must do to counteract the
> dulling and darkening effects of the matte lam, and yet the color
> doesn't get TOO strange looking, so I'm guessing this is the effect
> that we're describing?
>
> Thanks,
> Bob Rock
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