Re: Custom profiles with RAW
Re: Custom profiles with RAW
- Subject: Re: Custom profiles with RAW
- From: Richard Wagner <email@hidden>
- Date: Mon, 31 Oct 2005 18:04:09 -0700
Shouldn't be tough. What you want to map is the camera's response to
light, right? If the scene you're shooting has light that is casted
one
way or another, that should be rendered by the converter —
automatically — without operator intervention (other than establishing
the correct color-space or profile).
Ah, Rich, if it were only so simple! A point-and-shoot RAW
converter! And all the hours I waste trying to get it right... ;-)
The link Andrew gave to the ICC paper is a good starter. ICC
profiling digital cameras is a huge can of worms... and after
investing a lot of time on the problem, like most other
photographers, I've decided to work with what works, rather than beat
the ideological drum and never accomplish what I need to do. ACR
works, and it's fast, particularly with Bridge. Often what's needed
is an image that "looks good" or looks even better than the original
scene - and so much is in the eye/mind of the beholder. The
calibration script for ACR by Thomas Fors helps eliminate inter-
camera variability and improves the accuracy of ACR. Unfortunately,
white balance is one of the most important processing variables, and
auto-WB or even measured WB often will not give the mood that you
want. Small differences from "accurate" can get the mind to give a
completely different interpretation of a scene. As Andrew also
mentioned, it is literally impossible to compress the reality of a
scene into a RAW file with the current recording capabilities of
digital cameras - it's simply not possible. So, when you hear
photographers start laughing when a graphic artist says they're going
to start doing digital photography, you've got some idea why. Just
as it was with film, there's still a lot involved in getting a good
image - perhaps even more so.
By the way, with all this new ICC technology that eliminates the need
for subjective adjustments, you've started hiring color-blind
pressmen, right? All they have to do now is hang plates and play with
the buttons. Back when I was a pressman, we actually had to turn the
ink fountain keys by hand... ;-)
--Rich
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