Hi Scott, When you work with images in Framemaker on Windows and import image formats that resemble RAW image CMYK data (such as CMYK TIFF or CMYK JPEG) you *will* experience a loss in color fidelity because Framemaker on Windows can't use bitmapped CMYK data directly. However, FM can *read* the RAW CMYK data and convert them to some RGB or sRGB format Windows GDI (or GDI+) can use downstream, i.e. for display and print.
Unfortunately CMYK -> RGB conversion is lossy in regard to color fidelity because of gamut limitations in the CMYK color space (reflective colors depend a lot on paper quality, light temperature etc.). Therefore, Framemaker on Windows try to do something reasonable with such CMYK input (i.e. it basically uses canonical CMY -> RGB conversion with the addition of a reasonable, but less intelligent "guess" of what to do with the K component -- NOT at all comparable to "true" color management based CMYK -> RGB transforms, but *reasonable* yet not "good enough"). EPS *without* PostScript color management or PDF directly saved from Photoshop does NOT suffer. Hence, EPS or PDF are preferred formats for CMYK image data. PDF is overall preferred *unless* you need duotone images, which Framemaer does NOT support in PDF format at all -- au contraire to the FM documentation. To make a long story short: Save CMYK images as not color managed EPS or PDF directly from Photoshop. PDF is preferred because of file sizes and because PDF performs A LOT better with screen preview, screen redraw speed and printing speed than EPS. WARNING: Framemaker does NOT support some SPOT color definitions in PDF, so *IF* you use SPOT colors with imported artwork or images then use EPS instead. For some aged, but still relevant, additional info, please see http://www.grafikhuset.net/publipdf/whitepaper_difficult_pdf_documents.html Best regards / Med venlig hilsen Jacob Sch?ffer | Chief Developer Grafikhuset Paradis All? 22, Raml?se DK-3200 Helsinge, Denmark Phone: +45 4439 4400 Email: js at grafikhuset.dk Web: www.grafikhuset.net > -----Oprindelig meddelelse----- > Fra: framers-bounces at lists.frameusers.com > [mailto:framers-bounces at lists.frameusers.com] P? vegne af Scott White > Sendt: 9. oktober 2008 18:20 > Til: framers List > Emne: CMYK in Frame > > > I know this has been covered many times before, but I need a > refresher > in regards to cmyk .tif or eps images are brought into Frame > on the PC. I believe the color shifts when the image is > imported and then looks > like an rgb image. When you print to file and distill the image, it > doesn't carry over the cmyk properties but comes out as rgb. > The file then needs to be manipulated to print cmyk. EPS seem > to play > better with Frame than tif in regards to color? > > On the mac there is no problem. > > I usually deal with grayscale here, but I need the best way > to explain > to a PC Frame client why they are seeing what they are seeing. Any > help would be appreciate. > > Frame in Classic/Frame 7.2 on Windows XP. > > > Scott White > Media Production Manager > Implementation Coordinator > 210-704-8239 > swhite at alamark.com > > > > _______________________________________________ > > > 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.
