Filmscanners mailing list archive (filmscanners@halftone.co.uk)
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[filmscanners] Re: Scanner Profiling
On Tue, 15 Jul 2003 21:00:04 -0230, michael shaffer wrote:
> What difference does it make if the film is negative or positive?
> All the scanner understands, and scans, is color ... the rest of
> it is in software.
Because the positives (slides) don't have a mask layer, and they all
come out to colors that are directly viewable (perceivable), and they
all come out in the same color space: that of the human eye. Negative
films, however, do not. The (orange) mask layer is different from film
to film, and must be subtracted out before the "mechanical" color
inversion takes place.
TTYL, DougF KG4LMZ
----------------------------------------------------------------------------------------
Unsubscribe by mail to listserver@halftone.co.uk, with 'unsubscribe
filmscanners'
or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or
body
|
