Framers,

Unfortunately I mentioned in the second paragraph the additive and subtractive 
color models backwards.

RGB is the *additive* model, based on the addition of luminous colors. CMYK is 
a subtractive model, based on the absorption (subtraction) of complementary 
colors from (nominally) white light by pigments or inks. 

Thanks to Fred Ridder pointing out my typo.

Best regards
Jacob Sch?ffer  |  Chief Developer
Grafikhuset (House of Graphics)
Paradis All? 22, Raml?se
DK-3200 Helsinge, Denmark
Phone: +45 4439 4400
Email: js at grafikhuset.dk
Web: www.grafikhuset.net/publipdf


> -----Oprindelig meddelelse-----
> Fra: framers-bounces at lists.frameusers.com 
> [mailto:framers-bounces at lists.frameusers.com] P? vegne af 
> Jacob Sch?ffer
> Sendt: 28. februar 2008 21:56
> Til: Frame Users
> Cc: Mike Wickham
> Emne: RE: Color Output From Frame
> 
> 
> Framers,
> 
> Framemaker 8 still rely on the Windows GDI or GDI+ kernel as 
> most Windows applications do. This approach has a fantastic 
> benefit: Speed. Especially speed in regard to application performance.
> 
> Windows GDI or GDI+ are RGB or sRGB devices. This mean that 
> Windows in general will work in 3 component subtractive color 
> spaces such as RGB instead of 4 component additive color 
> spaces such as CMYK. Although it's possible to configure 
> color management in Windows you will NOT be able to define a 
> CMYK color in Framemaker that will preserve its CMYK values  
> as you defined them downstream. Even more impossible it would 
> be to preserve SPOT colors as you define them.
> 
> I have developed a solution that works fantastic in regard to 
> precise *repair* conversion. It's called Grafikhuset Publi 
> PDF with optimizer plug-in 
> (http://www.grafikhuset.net/publipdf/tech_components_optimizer
> _plugin.html).
> 
> However, I wouldn't dream of selling it to users that are 
> satisfied with the Distiller built-in 'Convert All Colors to 
> CMYK', since such users are simply not demanding enough in 
> regard to color fidelity to qualify as Publi PDF Optimizer 
> users. Such users automatically accept that a CMYK definition 
> in Framemaker will be totally molestrated by conversion 
> processes they don't control. Fine with me, but bear in mind 
> that automatic CMYK -> RGB -> CMYK conversions are quite 
> lossy, especially with colors that originally contained a 
> Black component. In practise this K component will often end 
> on the Y plate, but what the heck, it's CMYK :-) 
> 
> If you can live with that feel free to do so! 
> 
> The thing is, that CMYK or SPOT colors defined in Framemaker 
> will print as RGB and the Distiller built-in 'Convert All 
> Colors to CMYK' will POTENTIALLY not bring back the *correct* 
> CMYK values and DEFINITELY not the SPOT color values -- not 
> even their CMYK counterparts.
> 
> Grafikhuset Publi PDF is a quite expensive, but extremely 
> reliable and fast solution to this specific color problem. 
> With Grafikhuset Publi PDF you can setup color maps that 
> *precisely* converts the Framemaker/GDI generated RGB to CMYK 
> or SPOT as you originally defined in Framemaker and/or any 
> imported EPS art (be careful with imported PDF art -- you may 
> loose SPOT colors on-the-go).
> 
> To understand the problem better, please see my article on 
> the subject ?Difficult PDF documents in prepress?: 
> http://www.grafikhuset.net/publipdf/whitepaper_difficult_pdf_d
> ocuments.html
> 
> To download a fully functioning 30-day live trial: 
> http://www.grafikhuset.net/publipdf/download.htm.
> 
> Quite a few Publi PDF users already monitor the FrameUsers 
> e-mail list. Feel free to speak up with your track 
> record/experience with Grafikhuset Publi PDF.
>  
> 
> Best regards
> Jacob Sch?ffer  |  Chief Developer
> Grafikhuset (House of Graphics)
> Paradis All? 22, Raml?se
> DK-3200 Helsinge, Denmark
> Phone: +45 4439 4400
> Email: js at grafikhuset.dk
> Web: www.grafikhuset.net/publipdf
> 
> 
> 
> > -----Oprindelig meddelelse-----
> > Fra: framers-bounces at lists.frameusers.com
> > [mailto:framers-bounces at lists.frameusers.com] P? vegne af 
> Mike Wickham
> > Sendt: 28. februar 2008 18:32
> > Til: Scott White; Frame Users
> > Emne: Re: Color Output From Frame
> > 
> > 
> > > Has Framemaker 8 made any advances in color output for Framemaker
> > > pages?
> > 
> > Sadly, no.
> > 
> > > Second, has anyone discovered any new ways to create color
> > output from
> > > Framemaker
> > > without having the printer giving you the, "these colors
> > are rgb, ......"
> > 
> > Is it graphics you are having problems with? If so, save them
> > as .EPS files. 
> > When FrameMaker creates PostScript for distillation it passes 
> > everything 
> > through the Windows GDI. This converts graphics back to RGB. 
> > The exception 
> > is for .EPS files, which are passed around the GDI as is. 
> > CMYK will stay as 
> > CMYK. So I recommend that you use only .EPS format for 
> graphics files.
> > 
> > Also, in maker.ini, try this setting: 
> GetLibraryColorRGBFromCMYK=None
> > 
> > You may also have an improper color management setting in Distiller.
> > (Distiller also offers a "Convert All Colors to CMYK" 
> > option.) I seem to 
> > recall that having "Tag Everything for Color Management" 
> > caused plain black 
> > text to go multi-ink!)
> > 
> > The preflight capability of Acrobat Pro can help you find RGB
> > problems.
> > 
> > Mike Wickham
> > 
> > 
> > 
> > 
> > _______________________________________________
> > 
> > 
> > You are currently subscribed to Framers as js at grafikhuset.dk.
> > 
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> > 
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> > or visit 
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> khuset.dk
> 
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