Digital BW, The Print

This is interesting.  It has a little utility called Grayscale Builder which
certainly builds the right type of profile.  Unfortunately it doesn't appear
to be working properly.  Altering the white point setting alters the black
point, ie it adds the white and black point adj together and applies them to
the black point of the kTRC.  I can't find any way to change the white
point. V 1.4.1 


> From: dfaprinting <dfaprinting@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Mon, 20 Jun 2005 15:00:29 -0000
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: [Digital BW] Re: Optimal RIP gamma - was how many shades of grey?
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Steve Kale
> <stevekale@b...> wrote:
>> I don't disagree with the goal of opening up linearization to all.
> But many
>> people don't want to go down that route.  But even if they don't
> there is a
>> lot to be gained from profiling whatever greyscale they've got.  For
>> example, black only printing has been very popular for many.  I
> would argue
>> that the principal reason for this is its simplicity.  But the
> greyscale
>> output of black only is anything but linear.  If one could profile
> it,
>> though, then those users could get the benefits of a CM workflow (or
>> luminance managed workflow) even if the baseline isn't able to be
>> linearised.  The CMM has to do more work but at least it can do
> some work.
>> 
> 
> I've said this a couple of times, but will repeat one more. If you
> are running a RIP that uses CMYK output profiles, you can build a BO
> profile in Xrite's ColorshopX. Might also be possible to build it
> from measured values, never tried that. You now have a "color"
> managed workflow for BO printing. I've used it, it works, and makes
> the print much better since everything now fits with in the BO
> dynamic range, as well as its linearity characterists. No it isn't
> for the average user, but it can be done. 14 day demo is available
> from the Xrite web site, it's hidden pretty well, but can be found if
> anyone is really interested.
> 
>> The greyscale on my 4800 with Epson Adv B&W is really very linear.
> I don't
>> see the need for QTR with it for photo paper (assuming I stay with
> the
>> standard inks).  For matte paper I would like to try increasing the
> ink
>> limits to see if I can get a better dMax.  So with the 4800 and
> Epson inks I
>> am not going to be using QTR for its linearization.  Nonetheless, I
> would
>> like to be able to profile the luminance axis of its output and use
> CM to do
>> the dynamic range compression.
> 
> Remember that your 4800 has been linearized at the factory, so you
> should have it's nice linear output. That also measn there must be a
> way for the "normal" to re-linearize the new pro printers (sorry the
> 2400 may not be included).
> 
> 
> 
> 
> 
> 
> 
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