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QTR-Quadtone RIP

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Re: [QuadtoneRIP] Re: Comparing Cone's K7 curves with those produced by QTR curve creation tool.

2008-05-05 by Carl Schofield

No, they are not used and can be deleted.  The only items needed are  
ink limits and linearization.

On May 5, 2008, at 9:45 AM, ferdinand_paris wrote:

> Thanks.  I learning things in leaps and bounds.  Unfortunately since
> I'm trying to create curves for a 2100 I can't use yours.  However I
> can use the file created by Scott Schroeder in the files section.
>
> A couple of questions:
>
> (i)  Did Roy ever create a way to extract the curves from a .quad
> file, as it was suggested that he was going to do?
>
> (ii) Carl - in your definition file I see that you've specified some
> parameters like
>
> GRAY_HIGHLIGHT=4
> GRAY_SHADOW=4
> GRAY_OVERLAP=5
> GRAY_GAMMA=1
>
> and
>
> TONER_HIGHLIGHT=2
> TONER_SHADOW=2
>
> Do these actually do anything when you've specified a curve?  If so,
> how did you choose them?  Howard in an earlier response said that
> "None of the gray curve or toner curves facilities are needed as you
> can make all those adjustments with the shape of the loaded curve",
> implying that they either not needed or not used.
>
> Sorry for all these questions, but I'm trying to limit the amount of
> blind speculation and testing that I am about to do.  It pays to do a
> little research and testing before starting to burn ink and paper, and
> in order to minimise the loss of sanity.
>
> Ferdinand
>
>
> --- In QuadtoneRIP@yahoogroups.com, Carl Schofield <list@...> wrote:
>>
>> Yes.  Here is an example.
>> http://tech.groups.yahoo.com/group/QuadtoneRIP/message/4175
>>
>>
>> On May 4, 2008, at 6:01 PM, ferdinand_paris wrote:
>>
>>> Before I launch into a small amount of experimentation, a question.
>>> Has anyone actually successfully built and used curves using Howards
>>> .ACV files, or modified versions thereof?  I gather Howard hasn't,  
>>> and
>>> my searching couldn't find anyone else who has either?
>>>
>>> And yes, I read Roy's warning about the limitations of  
>>> linearisation,
>>> and the need to use a known good curve as a starting point.  I guess
>>> it won't cost much to try it on EEnhMatte.
>>>
>>> What would be a good starting point for VFA?
>>>
>>> Ferdinand
>>

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