Re: Re-Camera profiling
Re: Re-Camera profiling
- Subject: Re: Re-Camera profiling
- From: Ben Goren <email@hidden>
- Date: Tue, 3 Aug 2010 06:57:29 -0600
On 2010 Jul 30, at 9:47 PM, Roger Breton wrote:
> I learned the hard way, a long time ago (you know who you are),
> that strict colorimetric accuracy is not necessarily the best criterion for
> judging the quality of a camera profile.
The only thing I would suggest is that, even if the desired end result is something other than colorimetric accuracy, the most predictable starting point is colorimetric accuracy.
If you know that the skin tones will always be rendered the exact same color as they are in the real world, you can then use your editing workflow of choice (which could be anything from Photoshop curves or other adjustments to non-colorimetric ICC profiles) to ensure that they get changed to whatever palette you prefer.
On the other hand, if you rely on the RAW processing software to interpret skin tones (or other colors) directly to your artistic vision, you're at the mercy of a great number of variables. If your lighting changes, if you get a new camera, if there's an update to the RAW software, if any of a number of things change, the rendering of the skin tones will change, too. You might like the changes or you might not.
If you know that you can ensure that they always come back to the same starting place -- colorimetrically correct -- then the remainder of your workflow remains unchanged. (Of course, colorimetric accuracy is impossible to achieve, but one can get surprisingly close.)
That, and, at least in my experience, Photoshop and / or ICC profiles offer a lot more control and predictability than RAW conversion software.
As a last thought, if you do decide to go the route of colorimetric accuracy, you'll almost certainly want a target with lots of skin tones on it. Which, in turn, might mean working with a local artist whose portraiture you like to build a palette of paints that are a good match for skin tones, and to build a target with those (and other) paints on it.
Cheers,
b&
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