- Vuescan Raw setting
- Posted by Forest on July 11th, 2004
Are there any settings in Vuescan that would effect a raw scan ?
- Posted by Henk de Jong on July 11th, 2004
Yes, when using an ICC Profile and the "Output|Raw output with" is set to
"Save".
In an e-mail Ed Hamrick wrote to me:
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It turns out that the "Color|Scanner color space" option affects
the raw image data when "Output|Raw output with" is set to
"Save". VueScan produces profiles that attempt to correct for
a non-linear CCD response, and the scanner profile can have
a gamma between 0.95 and 1.05. This non-linearity
correction is being done on the data before being written with
the scan.
It's best to save the raw file at the same time as the scan.
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There were two treads in this newsgroup "comp.periphs.scanners" starting in
October 2003 with the subjects:
"Colours way of when scanning the Raw file of the same slide in VueScan"
"VueScan raw file is not a true raw file!"
If you are interested I advice to do a newsgroup search with Google on those
two subjects.
With kind regards,
Henk de Jong
--
http://www.hsdejong.nl/
Nepal and Burma (Myanmar) - Photo Galleries
- Posted by Mendel Leisk on July 12th, 2004
"Henk de Jong" <henk@nospam-hsdejong.nl> wrote in message news:<40f18b67$0$34762$e4fe514c@news.xs4all.nl>...
Also, setting Input|Media to "Color Negative", changes the color
balance a lot. It's mentioned somewhere in the Vuescan help html.
- Posted by Ed Hamrick on July 12th, 2004
"Henk de Jong" <henk@nospam-hsdejong.nl> wrote:
Yes, but if you use a built-in profile for your scanner, the
raw file is independant of the "Output|Raw output with" option.
As another person noted, the main thing that affects the
raw file is the "Input|Media" option - negative settings
expose the green and blue channels longer than positive
settings.
Regards,
Ed Hamrick
