[scribus] Colour Profiles
John at T4sLtd.co.uk
Fri Sep 4 21:44:34 CEST 2009
Hal V. Engel wrote:
> On Thursday 03 September 2009 03:32:55 pm John Beardmore wrote:
>>> This has been said before here. The color management learning curve is
>>> fairly steep and most users who are new to color management feel like
>>> they have been pushed into the deep end of the pool. But once you
>>> understand how it works and make the effort (and yes spend the money) to
>>> get good profiles you will find that your results are MUCH more
>>> consistent and that you are spending less time dealing with
>>> color/tonality issues.
>> I don't think any of this changes the notion that the current
>> "Output intended for: Printer"
>> wording is pretty unhelpful, and whatever the difference is between the
>> options, it could be more clearly expressed.
>> If the difference is simply RGB vs CYMK workflow, and printers can
>> require either, why not word the choices as
>> "Screen / Web / RGB work flow"
> This might be slightly better wording for this option since it always gives an
> sRGB result.
>> "CYMK work flow" ?
> But this is NOT always a CMYK work flow. It is a printer work flow that
> generates output in what ever your printer color space is. In many cases this
> will be CMYK but it can be RGB, Gray or Device N. It depends on the printers
> ICC profile.
Then word it
"Work flow in printer colour space" ?
>> I'm not sure that the tool tip in its current form helps much either.
> This is certainly true.
>> Typical ink jets may take RGB at the driver interface, but so are some
>> reasonably chunky laser printers.
> On Windows and OS/X this is true but this is NOT true for the most common *nix
> drivers for ink jet printers. The general case is that printers and printer
> drivers can and do accept input in color spaces other than and in addition to
> RGB. The GutenPrint drivers that I use, for example, can accept CMYK input
> and will use it directly with the only processing done (other than ink
> limiting and gamma correction) is for the driver to work out how to mix the
> light/dark inks for each channel. This same driver will accept Gray input and
> only use the black/light black/light light black inks.
OK, though I suspect that at least in the wonderful world of windows,
most people use HP, Epson, Dell etc manufacturer sourced drivers.
One epson driver we had a few years back couldn't even render a simple
bit map without ballsing it up. Epson were no use, and nor were the ppl
that wrote the drivers for them.
I suspect that at least in windows, the use of superior third party
drivers is pretty much limited to a few cognoscenti with esoteric
hardware, RIPs etc.
John Beardmore, MSc EDM (Open), B.A. Chem (Oxon), CMIOSH, AIEMA, MEI
Managing Director, T4 Sustainability Limited. http://www.T4sLtd.co.uk/
Energy Audit, Carbon Management, Design Advice, Sustainable Energy
Consultancy and Installation, Carbon Trust Standard Registered Assessor
Phone: 0845 4561332 Mobile: 07785 563116 Skype: t4sustainability
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