Digital BW, The Print

Sorry, it would of course affect those prints that do not utilise a printer
ICC profile.  In that case different raw pixel values are sent to the
printer depending on the workspace.  This is a big advantage of the ICC
profile workflow - it is workspace independent because a conversion is done
at print.  

So workspace does have relevance when making the with ICC/without ICC
comparisons.


> From: Steve Kale <stevekale@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Thu, 20 Oct 2005 23:34:53 +0100
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Conversation: [Digital BW] ICC v. Transfer Function in Epson driver
> Subject: Re: [Digital BW] ICC v. Transfer Function in Epson driver
> 
> But the L* separation of Lab vs GG 2.2 is an illusion created by sample.
> Convert between the two and your colours remain the same.  So if you are
> looking at a 51 step wedge on your display in GG 2.2 then the 90% K patch
> reads L* 6.  Convert to Lab and the same patch's colour doesn't change at
> all and it's L* is still 6.  Convert to GG 1.8 and yes 90% grey is now 94%
> grey but the color is the same and it is still L* 6.  Another way to put
> this is that the visual separation you see does not change as you convert
> between workspaces.  If your printer could reproduce all the shades of grey
> you see on screen then that patch will look the same in print and read the
> same when you measure it.  It doesn't matter which space you work in (at
> least for B&W - there are other complications for colour).  When you convert
> to the printer output profile (you do not assign a printer profile) your
> colours will map the same. The only issue is the handling of out-of-gamut
> colours and its influence (if any) depending on intent of in-gamut colours.
>