This may be what you are thinking of:
"There is no scaling or color correction of the raw CCD data in the scanning
step. Some scanners either always or sometimes convert 10-bit or 12-bit CCD
data to 8 bits before transferring it to VueScan, and then VueScan converts it
back to 10-bit or 12-bit CCD data. This is done using a gamma correction table
(gamma 2.2 with a linear segment as specified by Rec. 709)."
Maris
----- Original Message -----
From: <filmscanner@gmx.net>
To: <filmscanners@halftone.co.uk>
Sent: Wednesday, October 24, 2001 12:25 AM
Subject: Re: filmscanners: LS-4000, calibration and Windows XP
| > I've noticed that I get much better results from Nikon Scan 3.1 if I
| > disable color management. If I continue using this technique, I assume I
| should
| > make a profile for the scanner that I'd assign to images in Photoshop. I
| could
| > also use this profile with VueScan when scanning in raw format - at least,
| > that's what I think.
|
| Do not use VueScan for a 'real' raw scan. Vuescan does something to the CCD
| data (I forgot what exactly, but it is in the help file).
|
| As for the Nikon device profile: The only place you can use it is in
| Photoshop opening the raw scan and assigning the device profile in the
|'missing
| profile' dialog. Vuescan uses its own version while scanning, not a
|custom-made
| one. And after the image comes out of Vuescan, you don't want to assign a
| device profile anymore, but rather use a working space profile.
|
| Barbara Nitz
|
|
| --
| GMX - Die Kommunikationsplattform im Internet.
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