[Gimp-user] Whither CMYK?
About once a year I ask about a capability to output a file from Gimp in pdf format and the CMYK color model. In addition it would be nice if this output was in the PDF X/1-a:2001 format, to satisfy certain fussy printers. I know there are external converters like ImageMagick. It would however be nice if after all these years Gimp catered to the needs of the printing industry. -- John Culleton Wexford Press Create Book Covers with Scribus http://www.booklocker.com/books/4055.html ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] opening CMYK psd
On Tue, 13 Sep 2011 08:26:42 +0200 bobdobbs for...@gimpusers.com wrote: Hi all. I'm using gimp 2.6.10 on ubuntu 10.10. I have a layered psd that has been edited using a CMYK colour profile. I'd like to open it. When I try, gimp gives me the error: Error loading PSD file: Unsupported color mode: CMYK Googling around gets me some interesting solutions. One is to use imagemagicks 'convert' to create each layer as a png. When I tried this, I got a whole bunch of generically named layers. Most of the conversions had failed, resulting in transparent png's with no content. I found this thread, nearly three years old, on ubuntuforums: http://ubuntuforums.org/showthread.php?t=958470 One of the solutions proposed in it is to use a seperation filter that that has been created as a plugin. I found the homepage for such a plugin. It had a warning that the plugin should not be used, with a broken link to a better one to use. I also found this: https://wiki.archlinux.org/index.php/CMYK_support_in_The_GIMP#CMYK_color_and_The_GIMP This provides some information on the issue, and a link to a plugin package to help remedy. However, the plugin is about four years old. Is this a solved problem yet? Is it possible to open CMYK psd's in gimp? Thanks. Scribus will import PSD and export e.g. png or tiff in RGB model. However once you are in Scribus you may find that most of what you need to do can be done in CMYK in that program. My rule is: if headed toward web presentation work in RGB, if headed for print work in CMYK. -- John Culleton Wexford Press Create Book Covers with Scribus http://www.booklocker.com/books/4055.html ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Whither CMYK?
On Tue, Sep 20, 2011 at 11:27 PM, john Culleton wrote: About once a year I ask about a capability to output a file from Gimp in pdf format and the CMYK color model. In addition it would be nice if this output was in the PDF X/1-a:2001 format, to satisfy certain fussy printers. I know there are external converters like ImageMagick. It would however be nice if after all these years Gimp catered to the needs of the printing industry. GIMP only got PDF exporting in upcoming v2.8. This exporter uses Cairo. Cairo doesn't support CMYk and spot colors. Therefore requesting CMYK PDF exporting will start making sense only after Cairo gets support for CMYK and spot colors. Alexandre Prokoudine http://libregraphicsworld.org ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Whither CMYK?
On Tue, 20 Sep 2011 23:38:20 +0400 Alexandre Prokoudine alexandre.prokoud...@gmail.com wrote: On Tue, Sep 20, 2011 at 11:27 PM, john Culleton wrote: About once a year I ask about a capability to output a file from Gimp in pdf format and the CMYK color model. In addition it would be nice if this output was in the PDF X/1-a:2001 format, to satisfy certain fussy printers. I know there are external converters like ImageMagick. It would however be nice if after all these years Gimp catered to the needs of the printing industry. GIMP only got PDF exporting in upcoming v2.8. This exporter uses Cairo. Cairo doesn't support CMYk and spot colors. Therefore requesting CMYK PDF exporting will start making sense only after Cairo gets support for CMYK and spot colors. Alexandre Prokoudine http://libregraphicsworld.org ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user I am reminded of my old sergeant in Korea who told me: Young soldier, don't tell me why you can't do it---tell me how you did it. Scribus does CMYK. Scribus also uses Cairo. If Gimp ever hopes to compete on an even keel with PhotoShop or even Scribus it should offer CMYK output too. It is an absolute requirement for printed output. While we are on the topic of outputs, for years the PostScript output from Gimp has had default X and Y offset values of 5mm. The default should be zero of course. I used to go in and patch the source code for Gimp to zero out the offset defaults. Now I don't bother any more. -- John Culleton Wexford Press Create Book Covers with Scribus http://www.booklocker.com/books/4055.html ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Whither CMYK?
On Wed, Sep 21, 2011 at 12:19 AM, john Culleton wrote: GIMP only got PDF exporting in upcoming v2.8. This exporter uses Cairo. Cairo doesn't support CMYk and spot colors. Therefore requesting CMYK PDF exporting will start making sense only after Cairo gets support for CMYK and spot colors. I am reminded of my old sergeant in Korea who told me: Young soldier, don't tell me why you can't do it---tell me how you did it. Scribus does CMYK. Scribus also uses Cairo. Scribus doesn't use Cairo for PDF output, it uses its own custom library. It was ever so. Cairo is used only for display output. If Gimp ever hopes to compete on an even keel with PhotoShop or even Scribus it should offer CMYK output too. It is an absolute requirement for printed output. As software GIMP isn't defined by its developers through competition against any other software. Hence GIMP dosn't aim to compete against anything else, it aims to suit the needs of professionals. While we are on the topic of outputs, for years the PostScript output from Gimp has had default X and Y offset values of 5mm. The default should be zero of course. I used to go in and patch the source code for Gimp to zero out the offset defaults. Now I don't bother any more. The trick was to report it and, since you already have the patch, attach it to your report. Please don't expect developers to gain a long distance control over your mind and scan it for complants on GIMP :) Alexandre Prokoudine http://libregraphicsworld.org ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Whither CMYK?
On Wed, 21 Sep 2011 00:31:13 +0400 Alexandre Prokoudine alexandre.prokoud...@gmail.com wrote: As software GIMP isn't defined by its developers through competition against any other software. Hence GIMP dosn't aim to compete against anything else, it aims to suit the needs of professionals. Understood. Professionals in the world of the printed word need CMYK. -- John Culleton Wexford Press Create Book Covers with Scribus http://www.booklocker.com/books/4055.html ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
