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My experience (covering about 15 years +/-) of working with and for printers and prepress service bureaus (including those who provide scanning services) is that a CMYK/tiff workflow is preferred for those wishing to print on an offset press. Since RGB is a monitor-oriented color space, and CMYK can't even come close to reproducing RGB colors, color images are normally color corrected in CMYK. This thread is/was about a Quark file destined for print (which normally means press). You are indeed correct. Quark's conversion of RGB tiff images to CMYK is yucky, at best. I've seen this for myself. That said, let's assume that a Quark file contains an RGB image of any type (EPS or tiff), if one prints a composite CMYK PS file, then all image data has to be converted to CMYK, doesn't it? Otherwise, how will one achieve four printing plates with all the file content? I created a test file in InDesign, with an EPS file and a tiff file of an identical image. The EPS was in RGB and the tiff in CMYK. When I printed the composite CMYK PDF file, the EPS color space has been converted to CMYK and frankly did not look as good as it's CMYK tiff cousin. The RGB image, as I would suspect, was slightly washed out. I actually achieved better results by taking the CMYK tiff image, and printing a composite RGB PS/PDF. Also, with Quark 6, when you print you can choose "as is" for your output, rather than composite RGB or CMYK, which I assume means that the print driver isn't going to do anything with the color space. I'm not sure what this means when the PS is passed on to Distiller as I haven't tried it. There should be no difference in color between images saved as an EPS file or tiff file if they are both CMYK. I'm not sure if you are a designer, or not, but print designers also prefer to work with tiff images. Imported tiffs provide far superior on-screen resolution, and both InDesign and Quark will allow one to view a placed tiff file in its full resolution. With an EPS file, you are only going to see low-resolution placeholders (72 dpi on a Mac, and an 8-bit tiff on a PC). In an office duplicating environment, we're talking about a new set of rules, where RGB appears to be the norm. Rich -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Scott, Kenneth A Sent: Thursday, March 11, 2004 11:09 PM To: [EMAIL PROTECTED] Subject: RE: [PDF] Huge PDF files from quark 6 (on mac) The PDF list is a service provided by PDFzone.com | http://www.pdfzone.com __________________________________________________________________ Rich, I agree with everything EXCEPT item 2 below. If you are a QUARK user (especially Quark) you are much better off using EPS files. The problems that many users run into and clearly do not understand is that if you are using RGB images and they are TIFF then Quark will convert them to CMYK for you and destroy your image quality / color (Yes you can choose composite RGB in the print Dialog but then it converts all your CMYK to RGB). They convert it to some form of SWOP but do the color conversion without asking anything about the RGB data. This causes any RGB TIF images to be washed out and flat and desaturated (ugly). If people are using RGB TIFF images they can make it work correctly only by using Quarks CMS (Color Management System) and by using the ICC profiles for a particular printer (now it is not device independent). I agree that for any image that EPS will be the largest. However, it will be the most color accurate through ANY page layout application into the final PDF. My .02 Ken -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rich Sprague Sent: Thursday, February 26, 2004 11:09 AM To: [EMAIL PROTECTED] Subject: RE: [PDF] Huge PDF files from quark 6 (on mac) The PDF list is a service provided by PDFzone.com | http://www.pdfzone.com __________________________________________________________________ 1. Original images. Make sure they are 300 dpi, and if you scale them down in the design procoess (more than 20-30% or so), scale them down in Photoshop before you import them. 2. Use tiff files, rather than eps for images. 3. Use the Distiller PPD to make your PostScript file. 4. You need to make a PDF for each type of use: screen (for web viewing), standard (for printing on office printers), and press (if you will be sending your file to a printer for offset reproduction). Let me know if these steps give you any better results. Rich -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, February 26, 2004 10:52 AM To: [EMAIL PROTECTED] Subject: RE: [PDF] Huge PDF files from quark 6 (on mac) The PDF list is a service provided by PDFzone.com | http://www.pdfzone.com __________________________________________________________________ 'k, here's the deal. We have a quark brochure for print with eps high res images. I don't know how many pages, lots. When we try to generate a pdf, we get a 57 mg file. Oh my gawd, this is HUGE! What are key steps in taking a high res print file and producing a small pdf that can be portable online and yet print ok on a regular office printer/????? Sara -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rich Sprague Sent: February 26, 2004 12:40 PM To: [EMAIL PROTECTED] Subject: RE: [PDF] Huge PDF files from quark 6 (on mac) The PDF list is a service provided by PDFzone.com | http://www.pdfzone.com __________________________________________________________________ I guess my questions would be: 1) What do you consider huge? 2) What are you starting with? i.e., how many pages, how many images, what size are the images, are they 300 dpi? 3) Are you printing to a Distiller PPD? Every year I help a client with a 32-page full-color catalog that is created by a designer in Quark. His PDF files are like 10-15 mb per page...I can make the same PDF at 10% of his file sizes. My guess is that the problem is his PPD, although I have yet to get to see how the designer makes the PDF (he is a couple of hours away). Any information you can share would be helpful, otherwise your guess is as good as mine is. Rich -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Olaf Dr�mmer Sent: Thursday, February 26, 2004 10:15 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [PDF] Huge PDF files from quark 6 (on mac) The PDF list is a service provided by PDFzone.com | http://www.pdfzone.com __________________________________________________________________ I doubt that XPress objects themselves create huge data volume, Thus I'd expect this to be due to some imported file (TIFF, EPS, PDF, ...). Could you isolate which of such imported files (if any/if my assumption is correct) is causing this? Olaf Druemmer [EMAIL PROTECTED] wrote Thu, 26 Feb 2004 11:27:05 -0600 > >The PDF list is a service provided by PDFzone.com | >http://www.pdfzone.com >__________________________________________________________________ > >I seem to recall an issue regarding very large pdf files generated from >quark 6. We are also having this problem. It does not seem to matter >whether we create the pdf out of quark or send to distiller, file size >is HUGE! Please help! > >Sara > >To change your subscription: >http://www.pdfzone.com/discussions/lists-pdf.html > > To change your subscription: http://www.pdfzone.com/discussions/lists-pdf.html To change your subscription: http://www.pdfzone.com/discussions/lists-pdf.html To change your subscription: http://www.pdfzone.com/discussions/lists-pdf.html To change your subscription: http://www.pdfzone.com/discussions/lists-pdf.html To change your subscription: http://www.pdfzone.com/discussions/lists-pdf.html To change your subscription: http://www.pdfzone.com/discussions/lists-pdf.html
