Re: Custom profiles with RAW
Re: Custom profiles with RAW
- Subject: Re: Custom profiles with RAW
- From: bruce fraser <email@hidden>
- Date: Tue, 1 Nov 2005 09:27:36 -0800
At 9:52 AM -0600 11/1/05, Rich Apollo wrote:
Years ago, we had a client (a photo group as luck would have it) who
liked to submit RGB files. We'd go through round after round of
proofs for these guys. I stumbled onto a very good table for
converting their files to CMYK. It worked pretty darn well. That,
however, did not preclude us from adopting a color managed workflow.
And we reaped the quality benefits.
The calibration script for ACR by Thomas Fors helps eliminate
inter-camera variability and improves the accuracy of ACR.
No it doesn't. You're balancing for a certain set of RGB numbers.
You're establishing a set of "curves" or "tables" to use in your
conversion. It's roughly the same as running old scanning software.
This is a totally untrue statement that indicates either that you're
completely unaware of how Camera Raw interprets color, or you have an
agenda that necessitates spreading disinformation. The Calibrate
controls in Camera Raw adjust the primaries of the built-in matrix
profiles for the camera model being used to account for interunit
variation, the main cause of which is differences in the thickness of
the CFAs, and Tom's script merely automates that process. It
establishes no curves or tables, it simply moves the coordinates of
the primaries in the xy chromaticity plot.
Now, I ask you, if Adobe allowed you to choose a camera profile of
your own making that represented the abilities of your camera would
you use it?
Only if it produced better results than the ones Thomas Knoll has
already built for me. Based on my experience thus far, that would
translate to a resounding "no".
Do you suppose it would simplify or complicate the process?
It would complicate the process by forcing me to make a decision
instead of relying on automatic behavior.
And what sort of impact do you suppose it would have on the quality
of your work?
Every time I've tried it so far, the impact has been negative.
--
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