Re: Nikon D1x
Re: Nikon D1x
- Subject: Re: Nikon D1x
- From: Rob Galbraith <email@hidden>
- Date: Sat, 05 Apr 2003 16:22:12 -0700
Hi All,
In regards to the message from Roger Breton:
>
"I would be surprised if the camera would internally convert from a 'native'
>
space to AdobeRGB. I don't think Nikon's engineering is that advanced.
>
Kodak's engineers, on the other hand, are doing just that.
>
>
I believe that the camera raw pixels are just slapped with AdobeRGB on the
>
way out to the storage media."
First, I don't think any particularly advanced engineering is required to
process a photo out to a specific colour space within a camera, or later
within processing software if the camera was set to shoot RAW files. This is
pretty basic stuff that, as I understand it, can be accomplished within the
architecture of Nikon, Kodak, Canon and I'm sure other brands of digital SLR
cameras. In fact, it would be largely self-defeating for Nikon to pronounce
that photos from one of its cameras should be defined with Adobe RGB when
the colour space is something else, since they would essentially be
forsaking the ability to define what they want Nikon camera colour to look
like. So, I think it's safe to discard this notion altogether.
In regards to the message from Tom Lianza:
>
When I first got my D100 I ran a Color Checker through the system and tested
>
that, when properly configured, and color managed, the results were the same
>
through each of the color spaces, after color management. The D100 has two
>
sRGB modes, each with it's own bias towards color errors in the final space.
>
Nikon recommends that a photographer select the WORKFLOW that they feel most
>
comfortable with.
I'm perhaps misreading what you're writing, but one interpretation is that
all three of the D100's Color Mode settings deliver photos that look the
same when viewed in their intended colour space (ie sRGB or Adobe RGB).
If that's what you mean, that's incorrect. Each of the D100's Color Mode
settings combines a colour look and a colour space into one switch. The more
important consideration here is the colour look that Nikon has wired into
each of the three settings, as each setting is different in overall
saturation in particular, but there are also differences in hue/brightness,
especially between settings I/II when compared to III.
So, when choosing a Color Mode, the first and most important consideration
for a photographer is which setting produces photos that look the best for
their purpose and preference. The secondary consideration is which colour
space does that setting happens to use (though of course the picture has to
be viewed in the colour space that matches the Color Mode setting to
properly to determine which setting is the preferred one).
For my purposes, I happen to prefer Color Mode II most of the time because
of the look of the colour on this setting, and this just happens to be Adobe
RGB, which fits well with my workflow too.
Incidentally, what I describe above can be tested easily if you shoot the
D100 (or D1X and D1H, for that matter) on RAW and open the photo in a recent
version of Nikon Capture, then change the Color Mode setting in the Advanced
RAW tool palette. The visual appearance of the photo will change on screen
as I describe. If that9s not sufficiently convincing, process the same photo
out to TIFF or JPEG three times, once each on the three Color Mode settings,
then open in Photoshop. The same differences in hue, saturation and
brightness will be apparent.
In addition, you can also configure Capture to process out to TIFF or JPEG
into the same colour space as what the camera offers, ie Mode I sRGB, Mode
II Adobe RGB, Mode III sRGB. But you can also unlink colour space and colour
look (which is not possible in the camera itself, unfortunately), processing
Mode I into Adobe RGB, or any other old RGB space for that matter, if you
wish.
If this is not in line with how you think Nikon's Color Mode settings work,
I encourage you to try the above. If I misread what you meant in your
earlier message, my apologies for making you read this Tom!
FYI, for those interested, Kodak's Photo Desk software allows for roughly
the same control: it's possible to choose the colour look, then output to
any colour space you can load into your system. Probably even Beta RGB!
As to the original question:
>
This camera saves images in either sRGB or Adobe 98 (well, really,
>
Nikon-branded versions of those spaces, but whatever). How do you
>
characterize it? Throw away the embedded profile and run a colorchecker
>
through your profiling app of choice?
The way that I've created a profile for the D1X is to set the camera to Mode
II, shoot the target, then run the resulting pic through profiling software.
This is a highly, highly condensed description of the process of course, but
starting with Mode II pics, JPEG or RAW out to TIFF, has worked very well
for me when profiling with ColorEyes from Integrated Color Corporation.
ColorEyes is a Photoshop plug-in, so it's important when opening the photo
into Photoshop that no colour space conversion is performed (ie no change to
the numbers that make up the pic) before reading the pic of the target in
ColorEyes.
-Rob
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| | >Nikon D1x (From: "tlianza" <email@hidden>) |