Re: Profiling Digital Cameras (long)
Re: Profiling Digital Cameras (long)
- Subject: Re: Profiling Digital Cameras (long)
- From: Andrew Rodney <email@hidden>
- Date: Sun, 10 Mar 2002 10:35:04 -0700
on 3/10/02 9:47 AM, email@hidden at email@hidden wrote:
>
This type of solution is based on matrix profiles, which in turn are based on
>
liniar devices. So we are not making subtle corrections for rusty reds being
>
a bit too bright, while saturated purples are a bit too blue, or other
>
details that only a LUT based profile can manage. Instead we are correcting
>
only the RGB primaries and the way they interact with neutaral grays, whites
>
and blacks. All this without even the video card corrections a matrix monitor
>
profile gets! So if that is all one wants from a camera profile, then indeed
>
it would be possible to get that by trial and error or other manual solutions.
We are simply doing our best to produce a description of the RGB numbers so
we get an accurate preview and an ultimate conversion into some kind of
output space. This isn't a prefect solution but for some conditions, it's
the best we have.
You posted minutes ago about NOT needing a scanner profile and suggested a
user instead use a display space. I don't see much of a difference here. We
do this when we scan color negs too. Are you agreeing that this "solution"
(admittedly a kludge) is effective or not?
You've got a set of RGB numbers that are undefined from a digital camera.
Using a monitor profile doesn't help. Modifying a Working Space (with some
help from a input profile tuner for those subtle color issues) at least
produces a decent looking preview. From that point on, what's the difference
between your suggestion of tagging the file with this modified Working Space
verses your display profile?
Andrew Rodney
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