Marghanita da Cruz wrote:
david wrote:
Sridhar Dhanapalan wrote:
2009/4/2 Ben <[email protected]>:
2009/4/2 Erik de Castro Lopo <[email protected]>:
Ben wrote:
GIMP and Inkscape can't do CMYK,
Does this not do it for Gimp?
http://my.opera.com/area42/blog/gimp-cmyk
from that link:
How its works:
* Open your RGB image in Gimp via "File > Open"
* Start Seperate+ "<Image Window> > Image > Seperate > Seperate"
* Setup the profiles, may as source "Adobe 1998" and as destination
profile "Euroscala V2"
* Press OK, an image with 4 layers is created
* Each layer represents a color channel of CMYK
* Now save the image as CMYK Tiff at "<Image Window> > Image >
Seperate > Save..."
ewwwww...
That is really, really not an acceptable implementation of CMYK. It's
the kind of thing that could be applied as a filter afterwards. It
doesn't let you work in CMYK with any kind of ease, you still work in
RGB and then do some kind of hideous conversion that would be almost
impossible to fine tune.
The point of CMYK is that you create stuff in the appopriate colours:
My printing recommends the following:
* Black text: 100%K, 0% all others
* Black backgrounds: 100%K, 30%C, 0% others
RGB gets converted to CMY(Cyan, Magenta, Yellow)(with no K(Black)
channel).
This leads to imperfect blacks in printing, and 3x the ink being
dumped to form black leads to smearing, drying issues etc.
Text ends up with fuzzy colour speckles around it too.
The GIMP plugin will not resolve these issues as every part of the
image would have to be hand tuned after being created, which is really
not practical.
GIMP does CMYK natively now:
http://en.wikipedia.org/wiki/The_gimp#Color_support
<quote>
Color support
GIMP also has a palette with RGB, HSV, color wheel, CMYK, and mixing
modes, plus tools to pick colors from the image with various averaging
options. There is support for hexadecimal color codes (as used in
HTML). "CMYK" colors are immediately translated into RGB when used;
GIMP does not have any built-in support for CMYK mixtures that cannot
be represented in RGB, such as rich blacks, though they can be
simulated to a limited extent with third-party add-ons.[citation needed]
</quote>
doesn't sound like "native" to me... I hope I'm wrong
What is CMYK and what is it's significance for NSW Schools?
From what I can tell "quick google" it seems to be related to printing
(and possibly PDF) ...this is not important (and possibly the greatest
obstacle), to Digital/Electronic literacy.
Fancy feature based comparisons of products is usually used as a counter
example to disprove a case rather than build a case. Since 2004, Gimp
has worked well for me - I routineley use it to manipulate JPG photos
for publishing on the web and emailing! Feedback is "how do I end up
with such small photos fast, friendly webpages?
I've been using GIMP for much longer and to great effect.. it's a terrific piece
of software but fatally flawed if you want to print seriously. Even using
Gutenprint it's a struggle to get the colour right. It's a great pity.
I'm not an expert but I believe that the lack of native CMYK is fundamental to
the printing problems. It's rather more than a "fancy feature". Printing photos
and artwork is fundamental to a whole industry (or two).
There are other software with colour management (cinepaint comes to mind) but
it's nowhere near as easy to use or as sophisticated as Photoshop. It's one area
where FOSS has a way to go. I would love someone to tell me I'm wrong.
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