QTR-Quadtone RIP

--- In QuadtoneRIP@yahoogroups.com, "c1asia" <c1asia@...> wrote:
>...
> 
> that's an interesting point, tyler.  thanks.  hadn't occurred to me 
> that curves would be different for the two output resolutions.  makes 
> sense.  does that also mean that any other changes to settings would 
> require custom curves as well (e.g., rendering intent, 
> unidirectional, gray gamma, etc.)?  or are we splitting hairs on some 
> of these?  i guess i should ask, which settings are the sensitive 
> ones that requires a custom curve?

it would take extensive testing with all the settings to determine the
answers. The only safe bet is to strictly adhere to the provider's
instructions for all of the settings in QTR for their curves/profiles.
You are of course free to use any settings you want, it's just that
the work they did to perfect those curves/profiles to accepted
standards goes out the window, and you are on your own.
That can be fun, or just a big waste of your time.

> the canned profiles provided by 
> paper manufacturers, are most of these 1440 or 2880?  i guess there's 
> no way of knowing what settings they're using when they developed 
> these, huh?

To my knowledge none of the paper manufacturers provide any profiles
or QTR setups for the K7 inksets. They are all provided by Cone, as
well as specific instructions for use.
For standard OEM inksets, the paper manufacturers often do supply
profiles, and should also provide specific driver settings for their use.
If not, I'd be suspect of their approach to color management, and the
quality of their profiles. Sometimes you have to look around for them,
but the few I've looked at like Hahna-sick-of-spelling-it did have a
pdf at the profiles site on the topic.
Tyler


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