Paul,
Thanks that's really helpful.
Yes indeed I am talking about the latest release of the profile called
"ISO web coated"
For example if I convert the following values I get the following
results.
From RGB Adobe 1998:
RGB 50,50,50 to "SWOP" CMYK = 70,64,63,62
(C highest and M and Y are similar values)
RGB 50,50,50 to "ISO web coated" CMYK = 64,53,48,71
(C highest M in middle and Y lowest)
I'm not saying SWOP is correct, but if I were to remove the black
separation it would appear grey wouldn't it? I don't believe the values
in the ISO web coated values would be neutral. If this is the case, the
question is why?
I do understand that the lack of yellow in the dark greys could be
hidden by the heavy black, but I don't understand why this was done,
and why a more "conventional & balanced grey" was not chosen. Is it
simply that when printing shadows with equal amounts of m and y they
have a "yellowish hue" or is this an ink trapping issue?
Overall, all tests I've done with the ISO web coated profile in
conversions results have been very good. I'm willing to accept that
these "unconventional values" in principle are OK, although I have
several sceptics here which I need to convince.
I would like to know what the reason was for this choice, if indeed it
was a choice.
Can anyone help shine some light on this decision?
many thanks
Andy Psarianos
On 30 Jul 2004, at 18:38, Paul Sherfield wrote:
Hi Andy
Yes it does look a little odd, but works well in practise, due to the
GCR
setting I think. This is the latest ISO wed coated icc, as of a few
months
ago?
Worked very well for me when a client was given Euroscale coated v2 for
sheetfed images for a wed offset production with lots of neutral
consumer
electrical images. I was called in after the first printing!! We
changed the
Euroscale coated v2 to ISO web coated with good results when reprinted.
Regards
Paul Sherfield
The Missing Horse Consultancy Ltd
Telephone: 01442 871752
Mobile: 07899 906385
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