Re: Cook Book (: InDesign 1.5.2 behaviours)
Re: Cook Book (: InDesign 1.5.2 behaviours)
- Subject: Re: Cook Book (: InDesign 1.5.2 behaviours)
- From: Henrik Holmegaard <email@hidden>
- Date: Thu, 21 Feb 2002 14:43:38 +0100
Bill Whitfield <email@hidden> wrote:
The one item that failed consistently
was the screen shots.
The InDesign 1.5.2 and Distiller 4.0.5 settings used to create the
cookbooks are written on page 3. There are two ways to generate PDF
with InDesign 1.5.2, one which directly translates InDesign data
structures into PDF 1.3 using the Export command and the other which
uses PostScript printed to disk for PDF generation through Distiller
4.0.5.
The direct export option from InDesign 1.5.2 was abandoned because
the file size was considerably higher than that of PDF generated by
Distiller 4.0.5. This is remedied in InDesign 2.0.
The alternative path through PostScript meets with another obstacle
in InDesign 1.5.2. There is no support for RGB in ID152 PostScript,
only CMYK ... and Lab. Of these two options I think we can agree that
the politically correct choice is Lab. CMYK is not only more data but
also sort of crazy for a project that talks about the niceties of
staying in three channels until the last possible moment. Also Lab is
neutral as between ICC host-based and PostScript in-RIP color
management workflow.
By and large the PDF documents contain three classes of objects,
a. type which is defined as Lab and not as deviceCMYK on the grounds
that the contrast is better for on-screen reading,
b. objects drawn in InDesign 1.5.2 which are defined as Lab,
c. placed EPS Lab which uses the new Image Interpolation function in
Pshop 6 for best possible low resolution screen and printer rendering.
The PDF documents are checked with Adobe InProduction which reports
that the images are Lab. There was an off-line mail saying a Pitstop
product reported objects in the PDF documents as 'indexed Lab'. This
sounds like a user error wrt locating the objects in question like so,
d. Lab gradients in type convert to outlines in InDesign 1.5.2 when
PostScript is generated; therefore, the display type for each chapter
was created as a separate document, the display type document was
converted to PDF using the Export command in InDesign 1.5.2, and the
PDF then placed on the opening pages where they belong; these objects
are reported by InProduction as 'Pattern' ... and that might be what
the Pitstop product sees as 'Indexed Lab'.
There are other limitations in InDesign 1.5.2, for instance, an Lab
object created in Pshop 6 and saved as PDF may be loaded into Illust
10 which autoconverts to RGB / CMYK depending on document color mode,
but an InDesign 1.5.2 Lab object is deleted from the PDF document on
opening.
There is a case to be made for providing deviceCMYK PDF: It prints
everywhere and every time.
There is a case to be made for providing device independent PDF: It
renders accurate color.
InDesign 2.0 is a different animal than InDesign 1.5.2. But there is
no guarantee that a three channel device independent PDF will render
right in your system. It will depend on your settings and your
software.
As with rendering intents and simple TIFF four and three and two
years ago, there will be a lengthy process of figuring out which
settings and software work, and if not then what causes the problem.
It doesn't make sense to launch that effort with non-Adobe software,
hence InDesign, InProduction, Illustrator and Pshop.
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