Re: Colorsync-users Digest, Vol 6, Issue 12
Re: Colorsync-users Digest, Vol 6, Issue 12
- Subject: Re: Colorsync-users Digest, Vol 6, Issue 12
- From: Thomas Levy <email@hidden>
- Date: Tue, 27 Jan 2009 17:07:00 -0500
Regarding Color management, CS3, Lightroom2, and various drivers;
Current and past product iterations, and forward moving technology
requires more
agreement on standards than is likely. One of the reasons that I use
a commercial
RIP is that the rip supplier provides up to date ICC profiles for new
papers.
They also maintain drivers for older printers. I use an Epson Stylus
Photo 2200 that
works very well. I have not been able to say the same for Apple 10.5
Leopard and Epson.
Older scanners, and printers are not supported with the intel versions
of Leopard.
Printing to the printer with the colorsync setting produces generally
useful results for proofs, but
does not include complete ICC profiles for special papers. There is
no profit margin for driver
updates on older models, even if there is for selling the ink.
In response to the Huey and Huey pro, which look cute and seem
functional;
I was not able to achieve adequate consistency on my I Mac and LaCie
324.
The generic LaCie provided profile was more correct. And I am waiting
on an Eye One to test.
The difficulty in establishing effective work process with the
continuing advance in equipment and
software causes uncharted expense and waste in paper, ink and time.
Using my Color Byte7 Rip from
Imageprint allows me to process images with greater uniformity, better
gray scale and less waste than with the Epson drivers.
And the support from Imageprint is better in every way.
Perhaps there is an opportunity for better software implementation at
the calibration side
that would take the control of the color away from the operating
system, and make the profile process more like a RIP,
or interface with software to insure only one compliant profile was
used for all color and grayscale manipulation.
A combined icc formula that showed what profiles were used for a
particular work flow, and in which order. Like an outline but with
control.
Check boxes that lead to uncertainty with less than clear indications
are just bad for everybody.
Tom Levy
On Jan 27, 2009, at 3:03 PM, email@hidden
wrote:
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Today's Topics:
1. Relative Color and Black point compensation. (tl)
----------------------------------------------------------------------
Message: 1
Date: Tue, 27 Jan 2009 07:16:38 -0500
From: "tl" <email@hidden>
Subject: Relative Color and Black point compensation.
To: <email@hidden>
Message-ID: <000001c98079$1b215fe0$51641fa0$@net>
Content-Type: text/plain; charset="us-ascii"
Hi to all,
I was very glad to see those questions and comments about Relative
Color and
black point compensation. We are currently living with a legacy of
bad
implementations and it is really holding back the growth and
acceptance of
color management at the lower levels of the market place. We've
been taking
a look at this situation and it is very grim. Many very popular
applications fail to implement BPC on display and this poses a
rather large
problem for vendors of display profiling applications. While Apple
has a
strong group involved in color management, they don't seem to be
able to
convey best practices to their internal developers. Applications
such as
Safari and Preview are ostensibly color managed but we see evidence
that
they do RelCol but they do not seem to have implemented Black Point
compensation. On the Adobe side we find that Photoshop works
correctly ,
but I am told that Light room displays without BPC. For displays
with wide
dynamic ranges, this is not too much of an issue, but for many
displays with
modest contrast ratios, this is a real issue. The result is clipped
shadows
on the display. The lesson: the fact that an application is color
managed
should not lead one to conclusion that color management has been
implemented
correctly.
From a vendor standpoint this situation is intolerable, because we
end up
getting the phone call. I have to say that my own company is not
blameless
here either. In our lower end products (Huey), we essentially write
the
display profile assuming a blackpoint of zero. This results in a
lower
contrast simulation inside of photoshop. This was my
responsibility. I
wrote to the lowest common denominator because I thought that the
amateurs
would be more likely to be using the platform centric apps which
were not
handling BPC properly. In our higher end applications (i1Display
and Muki
and above) we expect color management to work properly and write
canonical
profiles that describe the shadow performance in normalized manner
that does
not result in zero at the blackpoint. Our next generation of
products will
handle this issue uniformly. The ICC has been active in trying to get
vendors to do the right thing. The DevCon was well attended this
year, and
our speaker from X-rite, did highlight issues such as these. We've
been
looking at these problems for almost twenty years and we are close,
but not
quite there. I am happy to report that over Xmas vacation I was
actually
able to get Lightroom 2.0 and Photoshop CS3 to print the same image
identically (at least visually) on an Epson r2400 printer.
Unfortunately,
they didn't look the same on the display..
Regards,
Tom
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End of Colorsync-users Digest, Vol 6, Issue 12
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