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RE: filmscanners: Sprintscan 120 and new negative proile scheme



Austin,
All scanning software characterises film in some way as an attempt to get
you near where you want to be. You can still use your individual artistic
talents to effect the final product.
In no scanner software of which I am aware will give you by default the raw
data from the ccd. The raw data fom the scanner is processed through a
matrix filter or profile. What you see on the CRT is NOT what the scanner.
The goal of these profiles and matrix filters is to recover correctly as
much information from the film as possible, removes the base, do general
corrections based on what it knows about the ccd/scanner system and film.
All of these tasks are done in the process of printing negatives. Not a
whole lot different.
David

> -----Original Message-----
> From: Austin Franklin [mailto:darkroom@ix.netcom.com]
> Sent: Wednesday, June 06, 2001 8:14 PM
> To: filmscanners@halftone.co.uk
> Subject: RE: filmscanners: Sprintscan 120 and new negative 
> proile scheme
> 
> 
> David,
> 
> That is what I believed you would say, and I completely 
> disagree with that
> philosophy.  Films have certain characteristics that photographers use
> particular films for.  I don't want every film to give me the 
> same results!
> People never did this in the darkroom, so why do it in digital?
> 
> Just my opinion having been a professional photographer for 
> 20+ years...
> Also note, no one ever used film profiles for the Leafscan, 
> which was one of
> the most prolific high end scanner used for the past 10 
> years, nor did they
> ever ask for them.  I don't know if they were ever used for any other
> scanners, the SS4k was the first one I found that had them, 
> and I didn't
> like them.
> 
> Austin
> 
> > Austin,
> > Profiles are used to characterize a scanner/E6 film system 
> into a device
> > independent space. There is very little difference in the 
> system response
> > for E6 films so one profile per device works well.
> > Negatives have several differences, one being the base changes
> > form film to
> > film and the negative is not the final product the prints is. These
> > complications are why there are no "ICC" profiles for 
> negatives. Polaroid
> > and others have developed profiles that help characterize 
> various specific
> > negative films. Currently we have about 12 negative 
> profiles for the 120
> > scanner and more for the SS4000. We have found that these 
> profiles are
> > either dead on or unusable in which case you would do a raw 
> scan. We are
> > developing a "ring around" profiling scheme where each 
> profile will have
> > several related profiles to address common exposure differences.
> > All to get better scans quicker.
> > David
> >
> >
> > > -----Original Message-----
> > > From: Austin Franklin [mailto:darkroom@ix.netcom.com]
> > > Sent: Wednesday, June 06, 2001 7:25 PM
> > > To: filmscanners@halftone.co.uk
> > > Subject: RE: filmscanners: Sprintscan 120 and new negative
> > > proile scheme
> > >
> > >
> > >
> > > >     Polaroid is developing a new scheme for negative 
> profile's. I
> > > > am looking
> > > > for any Sprintscan 120 user who would like to help evaluate this
> > > > new scheme.
> > >
> > > Perhaps you could explain exactly what you mean by "negative
> > > profiles", and
> > > why one would need them.
> > >
> 




 




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