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. > > > > Send list messages to framers at lists.frameusers.com. > > > > To unsubscribe send a blank email to > > framers-unsubscribe at lists.frameusers.com > > or visit > > http://lists.frameusers.com/mailman/options/framers/js%40grafi > khuset.dk > > Send administrative questions to listadmin at frameusers.com. > Visit http://www.frameusers.com/ for more resources and info. > _______________________________________________ > > > You are currently subscribed to Framers as js at grafikhuset.dk. > > Send list messages to framers at lists.frameusers.com. > > To unsubscribe send a blank email to > framers-unsubscribe at lists.frameusers.com > or visit > http://lists.frameusers.com/mailman/options/framers/js%40grafi khuset.dk Send administrative questions to listadmin at frameusers.com. 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