Re: HP's New Printers
Re: HP's New Printers
- Subject: Re: HP's New Printers
- From: Roger Breton <email@hidden>
- Date: Thu, 01 Feb 2007 20:52:24 -0500
> ... In that incarnation I noticed that the printer's
> gamut was very limited in the shadows compared to our Epson 7800,. While
> the Epson displayed a very rounded shadow gamut (bowl-like), the HP
> tapered down sharply (cone-like).
I noticed that too, akin to an RGB-type output device. Weird.
> We also noticed some sharp breaks
> especially on matte paper. The most recent firmware upgrade (4.0.0.6)
> virtually eliminated all of these issues.
Oooh!
> This indicates to me that it's
> still an evolving and improving product. I rebuilt profiles using the
> APS and was quite pleased to see how the gamut shape improved,
> especially in shadow detail.
Nice.
> The Epson and HP are different, they both
> diverge into different shapes as the L* value declines, although now the
> HP displays a much larger shadow gamut than before.
One less thing to worry about.
> In regards to the onboard spectro, I think that it is a solid
> device and have no reason at this point to mistrust the accuracy of its
> measurements.
The only issue I heard that still bug some people is the black backing
business. Some would prefer white.
> As you pointed out, the APS is a work in progress and it
> may be presumptuous to make any judgments. What is obvious at this time
> is that the profiling software is a limiting point in the utilization of
> the spectro. I compared two profiles, one built from the APS and the
> other from Monaco Profiler using a DTP-70, and in Colorthink you would
> not be able to discern any differences in the gamut plots.
Some sort of ink-limiting?
> However the
> prints they yielded displayed some noticeable differences, with the
> Monaco profile showing smoother transitions and better shadow detail.
Interesting.
> I
> fully expect that APS results will improve as the software evolves. An
> interesting feature of the APS is the ability to export measured data as
> a text file to be imported into a 3rd party profiling package.
Sort of a way to allow using the built-in spectro for external profiling.
Good idea.
> I'm
> currently testing this option. This not only allows for more flexibility
> in profile creation, but if the patches were printed on another printer
> they could be read on the HP and you could create a profile using your
> existing profiling package.
True. Thank's for sharing your experience!
> Julian Mussi
> Spectraflow, LLC.
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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