Re: Media Testing for maclife.de
Re: Media Testing for maclife.de
- Subject: Re: Media Testing for maclife.de
- From: Robin Myers <email@hidden>
- Date: Sun, 7 Sep 2008 20:27:01 -0700
What I would like is a completely objective test of ALL the camera
profiling products, ICC compliant or not (e.g. ACR) so that we can
make informed choices. Mr. Zappe has tested only a subset of the
available products.
The ColorEyes 20/20 product, InCamera, and any product that works as a
Photoshop plugin was deliberately eliminated by Mr. Zappe from his
testing as he noted in a message to me:
The InCamera plug-in generates ICC profiles which ARE used system-
wide.
Uhm, yes, but you need Photoshop installed to build the profiles,
don't you? I only review applications that are not dependant on
Adobe products. Requiring an application from a company that tries
to monopolize an application area with applications that almost
completely disregard the GUI guidelines of the host platform is not
in conformance with my concept of "system-wide".
Some people have suggested that Adobe needs to abandon its current
Camera Raw color management and embrace ICC technology in ACR. I
suggest quite the opposite; that what is needed is not a single
approach (i.e. ICC) but more new thinking on the matter. Adobe has
done some work and developed the color model embedded in DNG and
presented in it's Camera Raw product. I give them kudos for attempting
something new. What other companies are developing new approaches?
It is clear from the comments and arguments that not everyone is
satisfied with the current choices. I believe we need more companies
that are willing to invest the resources into new approaches that
perform better than the current ones.
In my own testing of a few camera profiling packages, I found that ALL
the packages I tested had faults. Some had problems reproducing in-
gamut colors within certain regions of the camera space. Some could
not even get the gray scale correct. Some were always performing
perceptual transformations even though colorimetric rendering was
requested. My tests lead me to believe that Camera Raw works well for
perceptual rendering situations but it is not very well suited for
colorimetric profiling. Other products (e.g. ICC profile generators)
work better than ACR for colorimetric rendering but they may, or may
not, be better than ACR for perceptual imaging.
The current camera profiling products can stand improvement. With
testing we might be able to find methods for improvement, or perhaps
we might discover that the ICC camera model is flawed. We will not
know for sure until full testing and analysis is performed, and the
current products are tested against alternate models and methodologies.
Camera profiling is still in its infancy. There is much work to be done.
Robin Myers
On Sep 7, 2008, at 18:37 , MARK SEGAL wrote:
Edmund,
Yes, but as you probably know, this "open secret" is being
challenged (interesting article):
http://www.integrated-color.com/cecamera/index.html
and of particular interest, this explanation of it - important to
watch the embedded video:
http://www.luminous-landscape.com/reviews/accessories/coloreyes-commercial.shtml
Mark
----- Original Message ----
From: edmund ronald <email@hidden>
To: Mark Segal <email@hidden>
Cc: Andrew Rodney <email@hidden>; Terence Wyse <email@hidden
>; 'colorsync-users?lists.apple.com' List <email@hidden
>
Sent: Sunday, September 7, 2008 9:22:27 PM
Subject: Re: Media Testing for maclife.de
Mark,
It's an open secret in the industry that camera profiling doesn't
work well. There is some technology out there to solve the problem,
namely computing the camera response on the fly from good data about
the sensor and the scene lighting.
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden