Re: Grey shadows in Onyx Postershop
Re: Grey shadows in Onyx Postershop
- Subject: Re: Grey shadows in Onyx Postershop
- From: Steve Upton <email@hidden>
- Date: Fri, 3 Feb 2006 09:59:06 -0800
At 2:39 PM +0200 2/2/06, Jouni Mustonen wrote:
>Dear list readers,
>
>Just wanted to ask more experienced people if anyone has seen this phenomenon. After setting ink restrictions I linearize and set ink limit for this media. I don't mention any media type here as it seems to be irrelevant in this case.
>
>I set ink limit to 330% (maybe even higher in some cases).
>
>After linearization I print profiling test chart like ECI2002. Measure it twice and average. Create profile using GMB ProfileMaker 5.0.5b.
>
>Typical separation setting in PM5 are:
>- Logo Colorful
>- Neutral grey
>- Correct for optical brighteners
>- Ink jet 400 (neutralize)
>
>Calculate default size profile and import it to PosterShop.
>
>Now, with this procedure I get shadows to turn grey, not black. Seems that areas that should have quite high total ink coverage turn grey due to high GCR inside the Postershop. Even ink limit is quite high...
If you have Postershop doing GCR for you then ProfileMaker can't really create GCR or at least it is foiled in its attempts. If you choose to have Postershop do GCR then you might have better results making RGB profiles. I would recommend turning GCR off in Postershop and letting ProfileMaker build CMYK profiles and actually have control over K
Regards,
Steve
________________________________________________________________________
o Steve Upton CHROMiX www.chromix.com
o (hueman) 866.CHROMiX
o email@hidden 206.985.6837
o ColorGear ColorThink ColorValet ColorSmarts ProfileCentral
________________________________________________________________________
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