Re: Media Testing for maclife.de
Re: Media Testing for maclife.de
- Subject: Re: Media Testing for maclife.de
- From: "Bob Frost" <email@hidden>
- Date: Fri, 5 Sep 2008 10:08:52 +0100
Well, it seems that nobody wants to take into account the simple
question - why Adobe (being pretty much colour-savvy in all their
applications) are not implementing ICC-compliant custom LUT-based colour
profiles in their converters.
As I reported earlier, Adobe says:-
"First, ICC camera profiles used by raw converters today are designed to
process output-referred (i.e., rendered) image data, not scene-referred
(i.e., raw) image data. Furthermore, the sequence and placement of color
transformations described in an ICC camera profile can prevent other image
processing stages (such as highlight recovery algorithms) from performing
optimally. Third, there is no standard that describes the input color space
of the ICC camera profile color transformation (it is often, but not always,
a tone-mapped set of RGB camera coordinates). Consequently, ICC camera
profiles are not portable: they can only be used with the raw converter for
which they were explicitly created in the first place. Using an ICC camera
profile designed for one raw converter with another raw converter nearly
always produces incorrect (though sometimes entertaining) results."
from their website FAQs on the new camera profiles.
Bob Frost.
----- Original Message -----
From: "Iliah Borg" <email@hidden>
To: "ColorSync Mailing" <email@hidden>
Sent: Thursday, September 04, 2008 8:22 PM
Subject: Re: Media Testing for maclife.de
Dear Group,
Another, not Adobe-related question, is - are ICC-compliant LUT-based
profiles are suitable for quality raw conversion at all. On this topic I
would love to hear the opinions of other folks involved in raw convertor
development if any are present in this list at all. ICC approach is
pretty easy, and I fully understand why users (especially on
ColorSync-Users mailing list) want it. But is it a swiss army knife to
open all cans?
--
Best regards,
Iliah Borg
email@hidden
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