RE: input camera profiles
RE: input camera profiles
- Subject: RE: input camera profiles
- From: "Michael Fox Photography News Account" <email@hidden>
- Date: Thu, 1 Jun 2006 08:01:16 -0700
- Organization: Michael Fox Photography
Eugene,
I'll add something here since I'm currently profiling a Phase One P45 and
trying several packages, including Gretag Macbeth ProfileMaker Pro, Monaco
Profiler, inCamera, and ColorEyes 20/20.
You are correct about embedding "No Color Correction" and then stripping it
off. Capture One should have a choice for "Do Not Embed Profile". I put in
the feature request. I'm told that C1 used to have that option but the
option was removed because too many people didn't understand color
management and used it incorrectly. But stripping it in Photoshop works
fine.
In fact, another P45 shooter did the following test: if you take the same
raw file, open it in C1 and in Raw Developer, follow the above process with
C1, turn off color management in Raw Developer, and do not make any
adjustments, the output is identical.
You mentioned EyeOne. I haven't tried EyeOne Match. But I did find that
the ProfileMaker Pro produced more accurate color and tone than the supplied
Phase One profiles, but it had the smallest gamut of all the packages -
significantly smaller than the supplied Phase One profiles. So just be
aware. It does have lots of controls and adding saturation helps. But it's
still smaller than one would think would be normal for a camera.
I don't have any numerical analysis to share at this point - still trying
different options of the different packages to compare results. But,
unscientifically, the ColorEyes 20/20 package seems to provide the best,
most accurate color. Main problem is that it lacks shadow detail. Some may
like the added contrast (rather like Velvia) but I prefer more separation in
the shadow values. So my project for this morning is to use ProfileMaker
Editor to adjust the tone curve of the ColorEyes profile to match the tone
curve of the Gretag Profile. Since the editor does not have an L* curve
(only RGB curves), I do this at the peril of changing hue. Monaco
Profiler's editor has an L* curve but only edits output profiles.
If anyone knows of a good profile editor for input profiles that can edit in
L* (must run on a PC), I'd be appreciative of a pointer.
Michael
> -----Original Message-----
> From: colorsync-users-bounces+news=email@hidden
> [mailto:colorsync-users-bounces+news=email@hidden]
> On Behalf Of eugene appert
> Sent: Thursday, June 01, 2006 6:49 AM
> To: Mark Buckner
> Cc: email@hidden
> Subject: Re: input camera profiles
>
> Mark Bruchner wrote:
>
> > Capture One allows you to embed rather than convert to a profile when
> > processing a RAW file.
>
> Thanks for clearing this up for me I hadn't found the time to look at this
> closely , I had noticed the embedded " no colour correction" profile and
> wasn't sure if it was a targeted work space or simply assigned. When I
> looked at it in Colorthink it was identical to sRGB so I got worried. So
> if
> I am understanding you, using Phase One Capture for the raw conversion
> and
> stripping the "no color correction".icc profile we will have produced an
> untagged tif ready for profiling.
>
> > I also feel (and have said before) that the concept of just adjusting
> the
> > color in a RAW converter by "how it looks" is
> > a step backwards. We wouldn't tell people to adjust their monitors by
> "how
> > it looks", would we?
>
> Actually the calibration of the raw file in Adobe Camera Raw has little to
> do with "how it looks". If you follow Bruce Fraser's instruction on pages
> 60
> to 65 in Camera Raw, you are tweaking the file of a 24 patch gretag
> towards
> the RGB numbers of the target space selected. So if I have have chosen
> Prophoto I am targeting the Gretag RGB numbers in Prophoto mostly for the
> three primary patches R3 C1 -2 and 3. Its not a profile but it is a series
> of twists and turns in response to key values of an external reference
> which are used to deduce the larger model.
>
> My next step will be to compare an ACR converted capture into Prophoto of
> artwork reproduction and a Phase One converted capture profiled with Eye
> One
> and converted to Prophoto. I'll let you know.
>
> Thanks of the info
>
> Eugene
>
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