Re: Lowering total ink coverage in a CMYK separation
Re: Lowering total ink coverage in a CMYK separation
- Subject: Re: Lowering total ink coverage in a CMYK separation
- From: Roger Breton <email@hidden>
- Date: Wed, 30 Jan 2008 23:34:03 -0500
Thank you Louis and Terry for being around so late in the night to field my
color tourments ...
Suppose I don't have any tools at my disposal other than what Photoshop
provides and some profiling package of my own like argyll. Suppose, further
that I receive a 340% CMYK image and it is tagged with SWOPv2 -- happens all
the time.
Let's consider two hypotetical scenarios :
Scenario A) bring down the TIL to 300%
Scenario B) bring down the TIL to 270%
In Scenario A, would I simply convert from SWOPv2 to SWOPv2? For sure
whathever that was 340% in the Source is going to get squashed to 300% by
virtue of SWOPv2 being limited to 300% in the Lab to CMYK direction.
In Scenario B, I could not just convert as above because SWOPv2 does not go
below 300%.
Appreciate your help and guidance,
> I would use something like Alwan CMYK Optimizer or any "workflow" type
> product that supports device link profile conversions. The "simple"
> part is to create a device link profile that uses the same profile, or
> a profile made from the same data set, for both the source AND
> destination with the destination profile having the desired total ink
> limit. With the correct settings for purity and such, you'll
> essentially get a "null" transform but with the total ink limit
> adjusted. Alwan CMYK Optimizer lets you do this easily but virtually
> any device link profile could be set to do this as long as you had an
> application that could process the images(s) through the device link.
>
> Regards,
> Terry Wyse
Roger Breton
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