Re: [Gimp-user] opening CMYK psd

2011-09-22 Thread Øyvind Kolås
On Tue, Sep 20, 2011 at 8:35 PM, john Culleton  wrote:
> 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.

If working with photographs, you should be converting to device
specific CMYK as late as possible in the process and keep things in
more device independent color spaces like RGB for as long as possible.
Similar to how you should not be saving intermediate copies to very
lossy JPG.

/Øyvind K.
-- 
«The future is already here. It's just not very evenly distributed»
                                                 -- William Gibson
http://pippin.gimp.org/                            http://ffii.org/
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Re: [Gimp-user] opening CMYK psd

2011-09-20 Thread john Culleton
On Tue, 13 Sep 2011 08:26:42 +0200
bobdobbs  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
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Re: [Gimp-user] opening CMYK psd

2011-09-13 Thread rich
rich  gmail.com> writes:

> 
> bobdobbs  gimpusers.com> writes:
> 
> > 
> > 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
> 
> 
> 
> > Is this a solved problem yet? Is it possible to open CMYK psd's in gimp?
> > Thanks.
> > 
> Not possible without a conversion to rgb

Actually only true for a cmyk psd file. The separate-import plugin will import 
a cmyk tiff file. I trawled out an old-ish gimp-plugins-registry.deb file ( the 
latest seems to have some strange dependencies) and import does work. 
It is hidden away in the File -> Create menu.


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Re: [Gimp-user] opening CMYK psd

2011-09-13 Thread rich
bobdobbs  gimpusers.com> writes:

> 
> 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



> Is this a solved problem yet? Is it possible to open CMYK psd's in gimp?
> Thanks.
> 
Not possible without a conversion to rgb

Use ImageMagick with the -colorspace switch ie.

convert .psd  -colorspace rgb  .xcf

saving in gimp xcf format will preserve the layers.



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Re: [Gimp-user] opening CMYK psd

2011-09-12 Thread Kevin Brubeck Unhammer
bobdobbs  writes:

> 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?

Not having tried this myself,
http://en.sourceforge.jp/projects/separate-plus/ seems to be the
official[1] download page of Separate+, also linked to from e.g.
http://registry.gimp.org/node/471 which says it provides:

separate_import (bonus)
CMYK TIFF import plug-in which generates the pseudo-composite image

So I would try 

$ convert input.psd output.tif

and then open those tiff files in gimp with separate_import (unless
separate_import can also open psd files?)


Hope this helps,
Kevin Brubeck Unhammer



Footnotes: 

[1] The official homepage
http://cue.yellowmagic.info/softwares/separate.html seems to be
down, however, the Arch Linux package also points to sourceforge.jp.
The homepage of the "old" Separate plugin (without the plus) also
recommends using Separate+:
http://www.blackfiveservices.co.uk/separate.shtml

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[Gimp-user] opening CMYK psd

2011-09-12 Thread bobdobbs
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.

-- 
bobdobbs (via gimpusers.com)
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