Digital BW, The Print

Tim

I am not sure what you are talking about.  When you either assign or convert
a file to QTR Gray Lab it is tagged as this and this is what you want.  The
whole point is that you want to edit in QTR Gray Lab and have your files
tagged and saved as QTR Gray Lab.  You then use the PS colour engine to
convert the file on the fly at the point of printing (a la a colour
workflow) to either the QTR Matte Paper or QTR Photo Paper profile
(depending on the paper you are printing to) using Perceptual Intent and
Black Point Compensation.  This is just as with colour work.  PS therefore
uses Perceptual intent to manage the compression of the tonal range from
image or file to the print (matte or photo) space which has previously been
linearized.  This is the object of the exercise and unless you are telling
me that your PC does not have the Perceptual intent which I am sure it does
then you should be able to do it just like colour work.

And to your earlier post, if there has not been an HPR curve made available
to PC users then I am sorry.  They are easy to construct for a Mac and
presumably at some point someone ported a bunch of profiles over.  HPR and
EEM are very similar and almost substitutable.  The issue people are
grappling with is not the minor differences between HPR and EEM but the
major issue of tonal range compression from file to matte (any matte) paper.
This is what Roy's latest addition does.  Rather than ad hoc s curve
adjustments he uses the Perceptual colour engine to do the job.

Take a look at Roy's (Mac and PC) instructions and give it a go.

Steve


> From: Tim Atherton <timatherton@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Sat, 29 Jan 2005 10:25:21 -0700
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: RE: [Digital BW] Re: QTR settings with Hahnemuehle Photo Rag
> 
> 
>   Now look at the image
>> with either a Photo Paper soft proof or a Matte Paper soft proof as I
>> described.  What you are looking at now is pretty much how the final image
>> will be printed with respect to illuminance, not hue.  We tend to focus on
>> illuminance and so this is ok - we already know if we want it warm or cold
>> etc.  Make any paper specific changes and print in the normal fashion
>> (presumably saving it as a tiff if that is required).  Just don't
>> overwrite
>> the "generic" image because you may want to print on Photo paper later for
>> example and don't want any matte paper specific changes to flow through.
>> 
> 
> and what space do you save it as? QTR grey lab? QTR Matte? Gamma 2.2?
> Because you can't specify those at the printing stage - it's whatever he
> file is tagged with.
> 
> tim