Re: Common Standard in UK? Who does the Separations?
Re: Common Standard in UK? Who does the Separations?
- Subject: Re: Common Standard in UK? Who does the Separations?
- From: Bob Marchant <email@hidden>
- Date: Wed, 10 Jan 2007 19:56:32 +0000
On 10 Jan 2007, at 15:46, Richard Frederickson [Contr] wrote:
I am submitting composited figures to a scientific journal and they
have requested RGB files. Not a problem except that the images are
primary Red, Green, and Blue and they won't reproduce well in print
without some intervention. When I inquired about their ICC profile
for conversion to CMYK, they just responded that it "is not really
relevant"--which has me scared since someone has to do the
conversion and I'm afraid that they're not likely to take much care
doing it.
Hi Richard,
Probably the safest bet is to use the ECI ISO webcoated profile
available at www.eci.org
This is the profile recommended by the UK Periodical Publishers
Association as 'generic' solution. It has a TAC of 300% which makes
it a safer bet than the ECI ISO coated and the Adobe Europe ISO
Coated FOGRA 27 profile which have far higher maximum ink limit
(although some of the high end glossy magazines will of course be
able to tolerate higher TAC than 300% )
A word of warning though , the ECI profiles produce a distinct shift
towards purple when converting saturated blues using the relative
rendering intent ( kind of relevant to another thread running on this
list at present :-) ), so you'll probably be safer using perceptual
rendering , albeit it at the possible loss of some saturation in
certain areas. And of course these profiles have a set level of GCR.
If you build your own profiles , it might be advantageous to use
the relevant FOGRA data and set a TAC of 320% that still falls
within the PPA spec for many publications , and use a level of black
generation more suitable to your subject matter.
Regards,
Bob Marchant.
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