[filmscanners] RE: Kodachrome green / scanner colorimetry

["Mike Brown" <mike.brown@mindblown.com>]

Thanks for all the suggestions so far.

I have tried tweaking the hue of what's there in Photoshop which sort of
works but doesn't really look like the original. Maybe I could get it better
if I persevered but I guess my first stop is to try Roger's suggestion of
adjusting the correction in Vuescan. I'm not sure Vuescan is actually wrong
because I'm getting identical results with the Minolta utility but a
before/after picture Roger kindly sent me looks pretty convincing that
Vuescan can produce a better initial match.


Mike


> -----Original Message-----
> From: filmscanners_owner@halftone.co.uk
> [mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Arthur Entlich
> Sent: 16 November 2002 12:23
> To: mike.brown@mindblown.com
> Subject: [filmscanners] Re: Kodachrome green / scanner colorimetry
>
>
> One suggestion that I found with Kodachrome when I was having problems
> with the color response with my good ol' HP S-10 and S-20 scanner.  I
> could never get the color rendition correct via levels or curves of
> individual channels without considerable work.  However, I found I was
> able to make a ballpark correction by going into HUE in Photoshop, and
> moving the top slider around a bit for each color required (via the drop
> down menu).
>
> A little unorthodox, but it worked.
>
> Art
>
> Bob Frost wrote:
>
> > Roger,
> >
> > I wish it was that simple. I usually find that with old Kodachromes the
> > shadows go green and highlights go red and it is about right
> somewhere in
> > the middle, so it takes a bit of playing about with curves etc
> to remove the
> > casts accurately.
> >
> > Bob Frost.
> >
> > ----- Original Message -----
> > From: "Roger Smith" <rsmith@unb.ca>
> >
> >  What I've always
> > found with Kodachrome is that it scans bluish-cyan when I leave the
> > colour sliders at the default (1) position. Greens seem particularly
> > affected by this. I have to dial in some yellow and red to match the
> > original slides. Other films like EliteChrome usually come out just
> > about right at default.
> >
> >
> >
> >
>
>
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