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hack3rcon 05-02-2016 08:08 AM

GIMP and CMYK
 
1 Attachment(s)
Hello.
I have a .PSD file and when I want to open it, The Gimp show me an error about CMYK. I installed "GIMP Plugin Registry" too but problem not solved :(

How can I solve it?

Tnx.

Shadow_7 05-02-2016 08:40 AM

1st google hit says....

http://www.openmutual.org/2011/08/co...r-use-in-gimp/

and hints at using convert from imagemagick.

hack3rcon 05-03-2016 05:08 AM

Why Gimp can't open it?

hydrurga 05-03-2016 06:09 AM

Gimp's support for CMYK is derisory. You could read https://wiki.archlinux.org/index.php...rt_in_The_GIMP and install separate+ (http://cue.yellowmagic.info/software...lus/index.html), but even that won't help you actually open CMYK files.

If you're going to want to work with CMYK images without first converting them to RGB then I would suggest finding something else that isn't Gimp. In that respect, although I use Gimp for my normal RGB image work, I use a closed-source program for CMYK work so am not much use to you in suggesting alternatives.

sundialsvcs 05-03-2016 06:32 AM

Even Adobe Photoshop is not very well-suited to the actual needs of print.

RGB is the world of additive color, in which various colors of light are added on the screen to produce a visual image. This is the world of the computer-monitor, video, and of the motion-picture digital projector.

CMYK is subtractive color, in which various dyes and pigments absorb colors from the white light that falls on it or through it. This is the world of print, photographs, and [motion-picture] film.

Although, in one sense, you can "calculate" one from the other, it's really not that simple. Actual print-jobs must consider the inks, the paper stock, the latex coatings, and so on, all as physical materials. Filmmaking must consider the composition of the film and its color-response profile. These tasks are relegated to so-called pre-flight tools in the printing industries. Many of these tools are proprietary to this day.

John VV 05-03-2016 02:31 PM

i normally use Gmic to convert
but as above you WILL need to do some color correction
and from googling the name of the image ¨xenproject_banner_tag_cloud_final_191213.psd"
it is 341M
http://downloads.xen.org/Branding/Bo...er/2013Design/

but for PHOTOSHOP!!! internal working format
photoshop is the best tool
the previwew image
http://downloads.xen.org/Branding/Bo...13_preview.jpg

Code:

gmic xenproject_banner_tag_cloud_final_191213.psd -cmyk2rgb -o xenproject_banner_tag_cloud_final_191213.png
outputs a 8bit rgb png image

if the input image is a 16 bit Ushort

Code:

gmic xenproject_banner_tag_cloud_final_191213.psd -cmyk2rgb -o xenproject_banner_tag_cloud_final_191213.tiff,ushort
the image looks like a vector image that someone used PS to convert to a raster

visiondude 05-04-2016 06:34 AM

<< I have a .PSD file and when I want to open it, >>
If you are using Fedora 23 search for PSD using $ dnf search psd, will give you a plugin for Inkscape that will open .psd files.

Hope this helps

hack3rcon 05-07-2016 09:55 AM

Quote:

Originally Posted by visiondude (Post 5540379)
<< I have a .PSD file and when I want to open it, >>
If you are using Fedora 23 search for PSD using $ dnf search psd, will give you a plugin for Inkscape that will open .psd files.

Hope this helps

I use Debian.

visiondude 05-10-2016 04:29 AM

hack3rcon
You could always try a live iso and convert that way.

Norseman01 05-18-2016 04:50 PM

GIMP lacks CMYK but...
 
[QUOTE=hack3rcon;5539462]Hello.
I have a .PSD file and when I want to open it, The Gimp show me an error about CMYK. I installed "GIMP Plugin Registry" too but problem not solved :(
How can I solve it?
====================
If you can do computer programming I suggest you look at PIL.
It is a raster (picture) library for PYTHON.
I put scans of old negs and tarnished old pics through a simple routine I wrote BEFORE feeding them to THE GIMP. PIL has CMYK abilities.

Norseman01


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