Re: Decent results with Gutenprint - the poor man's RIP
Re: Decent results with Gutenprint - the poor man's RIP
- Subject: Re: Decent results with Gutenprint - the poor man's RIP
- From: Stephen Lawrence <email@hidden>
- Date: Thu, 15 Jun 2006 19:58:16 +0100
But then there are the problems of usability, viz - the interface.
This is the Colorsync list so let me discuss my view on color
management as it might fit in the driver: I believe it should be left
out.
Most color-correct photo guys use Photoshop as the color engine, and
print to a local printer via a raw driver by sending the
color-corrected data. This is an easy workflow to implement, the
driver devolves the color management burden on the upstream program.
Which, again, is I believe exactly what you want in any professional
workflow.
Hi,
It's impossible to leave colour management out of most printer
drivers as they must do the conversion from RGB to CMYK or CMYK
+additional inks.
The "RGB-ness" of a so called RGB printer driver comes from the input
colour space to the printer driver (RGB data from the OS), not from
the CMYK/CMYK+additional inks it typically outputs to the printer.
The list archives contains some overviews of what happens. So a RGB
printer driver could more accurately be described as a RGB input
printer driver. Although of course there are a small subset of
printers that do accept RGB data.
The printer driver should collaborate with the application to
coordinate good colour management so that colour management can occur
in the application and the driver can do its colour management to
render that work to the output device. That collaboration can be done
manually or preferably automatically depending on the app and printer
driver. In the case of Photoshop this is straight forward to do as a
single RGB colour space such as AdobeRGB is involved. It is actually
not much harder with very complex documents if the OS either
normalises the colour to a single colour space, as OS X can, or has a
driver interface rich enough to pass the relevant information to the
driver.
Regards
Steve
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