Digital BW, The Print

I was recently looking at a site for a lab that does carbon colour prints
with an incredible predicted lifespan.

They had a link to the tests of there materials on the Wilhelm site, but of
course it was dead.

I guess they got screwed...

> -----Original Message-----
> From: Editor P.O.V. Image Service [mailto:editor@...]
> Sent: Wednesday, July 03, 2002 9:09 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] Print Life was Epson 2200,1280 and quad tone
> options -- Leave WILHELM out of this
>
>
> Martin Wesley wrote:
>
> >
> >Unfortunately Wilhelm has not bothered, as far as I know, to do
> the obvious
> >and to comparison test these new materials against standard photographic
> >materials. His "years" are a matter of mathematical extrapolation and I
> >believe that his "print life" is not with the image at 100% but rather at
> >the point where it drops below some percentage of the original
> image. 80% or
> >90% I believe. Maybe lower. The RIT test is to 65% color retention.
> >
> >Wilhelm's research would be much more meaningful if the "life"
> was expressed
> >in comparison to a silver print. Did the Lysonic E or whatever
> fade at the
> >same rate as a silver print in the same test? That seems like a
> pretty easy
> >thing to measure and the fact that it has not been reported makes me
> >skeptical. Besides Wilhelm has been missing in action for two years now.
> >
> >If Wilhelm ran all of his trials and calculated "print life" the same way
> >each time, then the real value of his results is in comparing
> one medium to
> >another. I really don't think you can take his published year values and
> >compare them to what you personally might get. Could be less or
> it could be
> >more. There are far too many variables. Only our descendants
> will know for
> >sure.
> >
> >
> >
>
> As for Wilhelm, I posted this today on another list...
>
>
> ----------------------------------------------
>
> Where's Wilhelm.?
>
> http://www.wilhelm-research.com/       ?
>
> The site is STILL under construction! The only thing that changes are
> the images of construction equipment..
>
> Two years and counting...  LOL
>
> I am amazed that companies still report data from Wilhelm, when all of
> his data seems completely unavailable to the public..
>
> He may have a great reputation, but since the EPSON orange-shift debacle
> he seems to have no desire or intent to publicly disclose results...  To
> me that makes his numbers utterly useless except as a marketing tool for
> manufacturers.
>
> To all Henry's proponents... I will admit Henry had a great reputation
> and provided for many years an important service to the printing
> community, but, isn't two years LONG enough to put up some data? Or has
> he given up on accelerated testing methods?  Meaning that we should
> expect a 10 to 100 year wait (depending on the archivability of
> particular inks and papers) to see real data from him?
>
> IMHO his two year absence and failure to publicly report data has made
> his company an open joke.  I'm beginning to believe the site is there
> solely to placate us, that Henry has NO plans to ever again PUBLICLY
> release his data...  If so, he owes us all a note to that effect..
>
> Please note that I have addressed this e-mail to Wilhelm as well..
> Maybe, with the absence of the Leben list, they will deign to answer
> this open letter..
>
> --------------------------------------------
>
> If I hear ANYTHING from Wilhelm Inc. I will let people know..  I'm just
> NOT holding my breath...
>
> Keith
>
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
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