SD9 color adjustment techniques

Jeffrey Knapp · Mar 10, 2003

Let me know if any of the images in my pbase gallery would be of use to you. You're free to use any of them as you like.
--
Jeff-at-work (LC-5,S602,S2)

KIM MIN-SU · Mar 11, 2003

My opinions.

Ladehaug said:
1. The RGB curves are not corrected for linear output (leads to
abnormal greys and makes it impossible to set the white balance
correctly).
2. Highlights are not color clipped, but the accelerating hue shift
with intensity leads to very abnormal colors.
3. The relation between color intensity and luminance level is more
or less incorrect. Luminance level within highlights is kept at the
same level for a long time and then abrubtly cut off.

the reason of the 1,2,3 is the same.
If you don't want to use the look-up,
the profile should be separated the 3 range modeling.
and Some interpolation routines required at the high light area.
Maybe some idea be need at this point.

Ladehaug said:
4. Noise, considerably more than PhotoPro generates.

Yes, the rate of color separation is increase with the noise same time.

Ladehaug said:
Geir

--
SD9 with 24-70DG2.8

Ladehaug · Mar 11, 2003

Jeffrey Knapp said:
Let me know if any of the images in my pbase gallery would be of
use to you. You're free to use any of them as you like.
--
Jeff-at-work (LC-5,S602,S2)

Thanks Jeffrey, nice to see you around again. Several of your SD9 images are still among my top favorites. As you know, I have already used your images in some examples, and I have really enjoyed having those excellent quality raw files you provided last autumn! For example, the picture of the red poinsetta leaves with the water droplets is simply nothing else than completely out of this (bayer) world!

Geir

Dominic Groß · Mar 13, 2003

I emailed you, maybe I can make those testshoots...

Joseph S. Wisniewski said:
Dominic Groß said:

Joseph S. Wisniewski said:

Hope you folks don't mind a quick lesson on color calibration.

Click to expand...

Well thanks a lot for explaining this issue.

Joseph S Wisniewski said:

Now, if I can just get an SD-9 in my basement lab long enough to
get a real spectral response by projecting a spectrum directly into
the camera....

Click to expand...

How good are the chances?

Click to expand...

Very good. It's just a question of will it be weeks or months.

One of three things will happen. Either I'll finally be able to
borrow the SD-9 from work, or I'll be able to borrow one from one
of the big camera stores in the area (they do like getting
publicity from things like this), or someone in the Detroit area
will finally acquire one and come looking for good color profiles.

Ciao!

Joe

--
http://www.pbase.com/dgross
ICQ UIN: 289647506

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SD9 color adjustment techniques

Jeffrey Knapp

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KIM MIN-SU

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Ladehaug

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Dominic Groß

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