Digital BW, The Print

Robert,

Looking at the two images (yeah you do have to be a member of the Piezo list
to use the URL, which I recommend to everyone here who is not already) in
Photoshop, they both exhibit warming and fading. Zooming in and using the
"Info" panel you can get some idea of the red shift and the density change.
Checking the deep black of the chair well under the desk, the black density
of both has shifted a bit but not as much as the mid tones. You need some
step wedges and density readings to compare the two ink sets. The PiezoTone
is holding up much better than the FS in this test. I suspect the positions
might be reversed in a comparison to the very cool, special order,
Neutral-FS. (Too cold for my tastes.)

It is difficult to tell for sure from a low-res scan on the web but it looks
like the FS print's area that was not exposed to the light, is cooler than
the unexposed area of the PiezoTone print. My own experience was that the FS
was the warmer ink out of the printer. I think that we need to keep in mind
that people seem to be getting different results using the same materials
indicating that there may be a lot of printer to printer variation.

We really need a nice controlled 8 way warm/fade comparison test between
MIS-FS, MIS-FS Neutral, MIS-VM, MIS-Sepia VM, Piezo, PiezoTone WN, PT
Selenium and PT Cool Neutral. Then of course we have to keep in mind that
the results may vary with different ink/paper combinations. I also wish we
had an empirical measure of metamerism which I think is more of an issue
than the warming in many cases. We will each have to make our own
compromises and pick the one that suits us best. It is very good to see the
manufacturers working to upgrade their products and add to the options
available. As an end user I feel like I am in a much, much better position
than I was 12 months ago!

Martin Wesley
http://www.borderless-photos.de/guests.html



----- Original Message -----
From: "Robert Morrison" <rmorrison@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Wednesday, June 12, 2002 9:58 PM
Subject: [Digital BW] PiezoTone vs. MIS FS warming


> For those that didn't see this on the piezo list, below is a post from Jon
> Cone with a URL to get to a scan of a 100 hour Xenon fade of the
Piezotones
> vs. the MIS FS inks.  You  may need to be a member of the piezo3000 list
to
> be able to access the URL...I'm not sure.  It shows that the Piezotones
warm
> much less than the MIS FS set.  It is very difficult to judge from this
> image whether there are any density differences at this point.
>
> Robert
>
> ------ Forwarded Message
> From: Jon Cone <piezobw@...>
> Reply-To: piezography3000@yahoogroups.com
> Date: Wed, 12 Jun 2002 19:50:06 -0500
> To: piezography3000@yahoogroups.com
> Subject: [piezoBW] PiezoTone inks and MIS-FS inks in 100 hour Xenon fade
> test
>
> http://groups.yahoo.com/group/piezography3000/files/100hr-Xenon-Tests/
>
> In the folder above are images of the results of 100 hours of Xenon Arc
> testing on both the new PiezoTone WN inks and the MIS-FS inks on
Hahnemuhle
> photo rag. The rapid warm fade of the MIS-FS inks is very obvious by
> comparison. While I am not trying to stir up any MIS vs Piezography
debates,
> I did want to demonstrate what we believe is a vast improvement to inks
> which Piezography users have the choice of using.
>
>
>
>
>
>
>
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