RE: SWOPv2 is dead
RE: SWOPv2 is dead
- Subject: RE: SWOPv2 is dead
- From: Roger Breton <email@hidden>
- Date: Mon, 02 Mar 2015 20:24:30 -0500
Start by comparing their relative "end points". How does 100C in one space compares to 100C in the other space, and so on.
If they both "represent" ISO-12647-2, their respective colorimetry ought to coincide with that documented in the standard.
This is easy to check in Photoshop. Just assign one profile after the other to a characterization chart like IT8.7/4 Visual or Random. Make sure you select AbsCol in Conversion options and inspect Cyan, Magenta, Yellow, Black, Red, Green and Blue, paper white, and compare with the standard? If all those end points coincide then you need to dig further, look at 50 percenters in all four colors and their overprints.
I would tend to favor the one that is closest to the standard. But there could be matter of "tastes" in one style of separations vs the other. Not a black or white issue.
Best / Roger
-----Original Message-----
From: colorsync-users-bounces+graxx=email@hidden [mailto:colorsync-users-bounces+graxx=email@hidden] On Behalf Of Jorge .
Sent: 2 mars 2015 05:02
To: 'colorsync-users?lists.apple.com' List
Subject: Re: SWOPv2 is dead
Using the compare feature of ColorSync Utility with ISO Coated v2
(ECI) against Adobe's Coated FOGRA39 (ISO 12647-2:2004) reveals rather different (I think) 3D representations of their color spaces. Why is that and what does it reveal?
On Sat, Feb 28, 2015 at 7:55 PM, Martin Orpen <email@hidden> wrote:
>
>> On 28 Feb 2015, at 18:12, Roger Breton <email@hidden> wrote:
>>
>> Please excuse my ignorance but is "ISO Coated v2 (300)" based on Fogra39?
>
> Yes. It’s the ISO Coated v2 profile with a 300% ink limit.
>
> ECI offset guidelines state:
>
> The ECI offset profile “ISO Coated v2 300% (ECI)” is a good choice in
> cases where the intended printing condition is not yet known. The
> advantage of the version of the coated profile with a maximum total
> ink coverage of 300% is it‘s higher flexibility regarding the use for
> sheetfed and web offset printing. Prepress data prepared with this
> profile can be converted to many other printing conditions with good
> results, however, the best possible results will be achieved with cmyk
> prepress data prepared with the profile that matches thatprinting
> condition exactly.
>
> <http://www.eci.org/en/colorstandards/offset>
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