Re: Problems with Atkinson profiles on an Epson 9600
Re: Problems with Atkinson profiles on an Epson 9600
- Subject: Re: Problems with Atkinson profiles on an Epson 9600
- From: edmund ronald <email@hidden>
- Date: Fri, 09 Sep 2011 23:56:20 +0200
green tint on Epsons indicates driver corruption in my experience. I have a
9600, never had any problems profiling it, if you have a scanning spectro
big targets do it well.
Edmund
On Fri, Sep 9, 2011 at 9:05 PM, <email@hidden> wrote:
> if Color Base was available in 9600 days, it may well be worth the time to
> find, install, and run it on the media settings you use for the particular
> Atkinson profiles.
> I have not seen Epson drift over the years to the extent you imply, I
> would suspect an OS, app, or driver update, or combination of those, the
> be the problem. Or media manufacture evolution?
> The ColorThink curves are telling you more about what each profile
> measurement data is reporting about the state of uncorrected output at
> measurement time than anything else, and differences may even just be
> between the devices used for each. Without all things being equal, device,
> software, settings, etc etc, with a before and after profile made
> identically to compare curves, I'm not sure the curves are helping with
> your particular issues right now.
> Tyler
>
>
>
> > Thanks Scott.
> >
> > The problem is the 9600 was the last Epson Pro without internal
> > linearization The Atkinson profiles were made with several iterations
> of
> > the profiling process to carefully define the shifts between inks, such
> as
> > light cyan to cyan, specific to pattern-of-dots used by the 9600's print
> > engine for the specific paper. When I talked to him I think (many years
> > ago) he said he profiled in many steps/iterations (maybe 8 times) each
> > just
> > one RGB number (for each patch) higher.
> >
> > I'm not sure how to preserve those valuable response curves created by
> > Atkinson, yet update the changes in the machine over time. My immediate
> > response was to convert [in PS, <Convert-t-Profile>] a small i1 target
> > (RGB
> > 1.5, 288-patch) to the respective Atkinson profile, and then, to profile
> > (or, re-profile) based on that [modified] target. Unfortunately, the
> > result
> > was a much "darker and greener" image when using the protocol (convert
> the
> > image to the Atkinson profile) with the second profile. I called it a
> > "helper" profile. So, that didn't work, or I did it wrong.
> >
> > I guess I just have to bite the bullet and profile using Atkinson's
> > 4096-patch i1 target to make a new profile.
> >
> > When I use ColorThink to look at the Neutral Rendering Curves (using
> > Profile
> > Inspector, Curves tab) for the Atkinson and Epson-supplied profiles, they
> > look different. There are definitely more bumps in the upper part of the
> > red and blue lines.
> >
> > Do you have any suggestions?
> >
> > I'll be using PM4.1 with a 4096-patch i1 target (made by Atkinson) and an
> > i1Pro with the hand-powered scan table that came with it.
> >
> >
> > Tim Vitale
> > Paper and Photographs Conservator
> > Oakland, CA
> > 510-594-82877
> >
> >
> >
> > -----Original Message-----
> > From: Scott Martin [mailto:email@hidden]
> >
> > Hey Tim. Your situation is common. These printers do change over time -
> > especially after heavy usage. All you need to do is make a fresh set of
> > custom profiles. If made well you'll see better results than ever.
> >
> >
> > Scott Martin
> > www.on-sight.com
> >
> >
> >
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