[Openicc] What is exactly needed: Embedded Profile in CUPS raster !!

[Chris Murphy]

For Epsons, they consider 180 dpi and 360 dpi to be "Draft" modes. Anything higher, such as 720 dpi is "Fine" or "Photo".

Chris

On Jun 6, 2011, at 9:29 AM, edmund ronald wrote:

> Chris, 
> 
>  With all due respect, and speaking as a photographer, I am very happy with what comes out of my Epsons at 720dpi, and when printing on matte media I don't run them any finer; the prints are of the quality *I* need. 
>  Proofing may require super-resolution over a huge sheet, because that huge sheet is many many pages, but I believe fine art printing does not always require hi-rez once one cranks up the format on textured media. 
> 
>  Edmund
> 
> On Mon, Jun 6, 2011 at 5:13 PM, Chris Murphy <lists at colorremedies.com> wrote:
> 
> On Jun 6, 2011, at 7:39 AM, Richard Hughes wrote:
> 
> > On 6 June 2011 14:21, Chris Murphy <lists at colorremedies.com> wrote:
> >> I'm unaware of any product that enables this inclusion of metadata.
> >
> > At the moment I'm working on another patch to GTK to be able to get
> > the internal state of the print dialog, which data I can use in
> > gcm-calibrate to add to the profile. I've still not decided on
> > metadata names, but I'm figuring just using the cupsICCQualifier
> > names, e.g. "cups_OutputMode" and then specifying lists using
> > "Normal,Draft,Best" as the key value.
> >
> > From a technical point of view, I'm planning to use argyllcms to
> > generate the profile, then open it in lcms in gcm-calibrate and add
> > the few DICT entries we need.
> 
> OK but I'd say an ICC profile for a "Draft" mode on a printer is almost certainly useless. And might be questionable for "Normal". Almost certainly useful to build an ICC profile for "Best". However, an Epson printer doesn't use these terms, except for Draft. Everything else is "Fine" "Photo" "Superphoto" etc. Or there are specific resolutions specified. I surmise most inkjet printers are in the same boat, especially photo printers.
> 
> So even if this information is included I'm not sure how helpful it is. Draft and Normal may not have profiles for them at all. While Best might need two or three profiles if there are multiple resolutions available providing meaningful behavioral differences requiring unique profiles for those settings.
> 
> 
> Chris
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