blue hue to scanned slide

[jzbrd]

I'm using Vuescan 8.1.43 with a LS-2000 Nikon slide scanner to scan
Kodachrome slides. For some reason the scanned slide ends up with a
distinct bluish hue if I choose image and if I choose color slide the
colors are better but still kind of a bluish hue to the background.
Of course I can try and do the correction in Photoshop but it seems
that the slide should scan initially with "truer" colors. Any ideas?
Thanks

 

[degrub]

used to be a kodachrome type selectable in Vuescan.

 

[bmoag]

Does this happen when you use the Nikon software?
Is there a reason you need Vuescan rather than the software the manufacturer
supplies?
On some scanners with some materials Vuescan yields better results than the
software supplied by the manufacturer.
This is not uniformly the case in my experience.

 

[Eastside]

A blue cast is characteristic of Nikon scanners scanning KR. Try looking at
this:
http://www.marginalsoftware.com/LS2000Notes/casestudyI/scanning_kodachrome_on_the_nikon_caseI.htm



Dane

 

[jzbrd]

There is no Nikon software available for the LS-2000 and MacOS 10.3 so
that is why I use Vuescan

 

[Erik Krause]

I'm using Vuescan 8.1.43 with a LS-2000 Nikon slide scanner to scan
Kodachrome slides. For some reason the scanned slide ends up with a
distinct bluish hue if I choose image and if I choose color slide the
colors are better but still kind of a bluish hue to the background.
Of course I can try and do the correction in Photoshop but it seems
that the slide should scan initially with "truer" colors. Any ideas?

Try playing with Analog Gain. If the blue cast is visible in a clear
area too, use advanced workflow and 'generic slide' or 'kodachrome' to
determine film base color.

After you checked 'lock film base color' go to the color tab and look
for the three film base color values. Divide the highest one by one of
the others and set Analog Gain to the result value for the
corresponding channel. Do this for the remaining channel, too.

If f.e. the highest value was for the blue channel you should end up
with 1.0 Analog Gain for the blue channel and some higher values for
the others. Now uncheck 'Lock film base color', preview or scan again
and lock again.

The film base color values on color tab should be more or less equal
now. Set them to 1.0 each and scan your slides using this settings.
This way you can color correct your scans and use the whole dynamic
range of the scanner (which you would need!).