http://www.zocalo.net/~mgr/DigitalPhoto/derCurveMeister/index.htm
I came across this site yesterday and haven't checked his procedure yet, but
he includes Photoshop curves files for correcting several negative films
scanned as positives. He also includes a procedure for designing curves for
other films.
I've always thought the correct curves were dependant on the image content
and attempting to write general curves, even for each roll of film, would
not be successful.
Bob Wright
----- Original Message -----
From: Raphael Bustin <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, January 12, 2001 7:50 AM
Subject: Re: filmscanners: orange mask
>
>
> On Fri, 12 Jan 2001, fotografia - tomasz zakrzewski wrote:
>
> > Do Nikon filmscanners come with special colour profiles for scanning
> > different colour negatives? Somebody told they don't. In that case, how
can
> > I automatically remove the orange mask?
> > What about the new Nikon scanners?
>
>
> Don't know about Nikon scanners in particular,
> but every film scanner I've worked with has
> some facility to do this, and it works with
> reasonable success, most of the time. Different
> scanners will come with different sets of such
> profiles; some have more, some have less. The
> "quality" of such profiles is debatable, in almost
> all cases, but you can usually find one that
> gets you close.
>
> Problem is that the color characteristics
> of the orange mask vary -- from one film
> lot to another, and in particular, as a
> function of the processing of the film.
>
> It would be nice if the scanner vendors
> provided an applet that allowed one to
> create an orange-mask filter for any
> particular film. All you really need,
> I think, is a blank (unexposed) frame.
>
> Another problem, I think, is that "pros"
> are assumed to be working with positive
> transparencies (slides) -- so the scanner
> vendors regard the scanning of negatives
> to be a low priority. But this is changing,
> I think, as folks realize some of the
> benefits of scanning negative film.
>
>
> rafe b.
>
>
