Digital BW, The Print

Martin,

I now understand that the "test" was done with quad inks...but the image
that was used contains purely 0's and 255's, NO gray tones.  Paul send me
the image.  That is not a valid test of grayscale performance.

What image(s) are you talking about?  I was SPECIFICALLY talking about the
resolution chart that he posted the results of in a .jpg file in the files
list for this group.

Austin

> Austin,
>
> Paul's test and posted results were done with all four MIS inks using his
> curves and the Epson color driver in comparison to Piezo driver
> using all 4
> Piezo inks. They are grayscale images printed as you would a photographic
> image with 4 inks all in use. His tests meet the criteria you specified.
>
> Martin
>
>
> ----- Original Message -----
> From: "Austin Franklin" <darkroom@...>
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Sent: Wednesday, October 10, 2001 5:02 PM
> Subject: RE: [Digital BW] Piezography Review: Piezo v. Epson resolution
>
>
> >
> > > First, there was a specific allegation made in the Piezo review.
> > > It claimed
> > > that the Epson driver cannot utilize the information in an
> input file of
> > > more than 360 DPI. Anything more that that would simply be
> > > discarded by the
> > > driver.
> > >
> > > This is demonstrably untrue.
> >
> > NOT demonstrated by your test pattern, that is not halftone.
> The context
> > was halftone...not just black ink.
> >
> > The fact is, when halftoning with the Epson driver and only one ink, it
> > takes up 16x more space to produce the same tones...given that, it would
> > only make sense that it has to limit the input resolution WHEN DOING
> > DITHERING/HALFTONING.
> >
> > > Having looked at a number of identical images that I've printed with
> both
> > > the Piezo and Epson drivers, I must say in most cases I cannot see any
> > > sharpness difference, even with a magnifier.
> >
> > IMAGES?  As in, grayscale or black/white (typically called
> lineart) only?
> > Printed with quad tone inks and the Epson driver, or just the black ink?
> >
> > > At any rate, I consider the drivers to be essentially equal in
> > > their ability
> > > to deliver sharp results.
> >
> > If you are basing this conclusion on the test image that you
> posted, your
> > conclusion is erroneous.
> >
> >
> >
> > Please visit the Group Homepage to check the Files, Bookmarks, Polls and
> other resources as they are often being updated. The page is at:
> >
> > http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint
> >
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>
>
>
> Please visit the Group Homepage to check the Files, Bookmarks,
> Polls and other resources as they are often being updated. The page is at:
>
> http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint
>
> Please follow these basic guidelines:
> - Include your full name with your message.
> - Include the address of your website, if you have one.
> - As threads develop, trim off excess portions of earlier
> messages to keep them short.
> - As the topic of a thread changes remember to change the subject header.
> - Good manners are required at all time. No personal attacks or "flames."
> - Complete your Yahoo profile.
> - Before posting a question, search the message archives and the
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>