RE: filmscanners: Re: Polaroid SS120 Scan Size

["Hemingway, David J" <HEMINGD@POLAROID.COM>]

The fine movement is controled by a precision worm gear of which a portion
is highly calibrated at the factory. This information is stored in the
firmware so we know EXACTLY where the slide is in relation to its position
on the worm gear at all times. The length of this calibrated section is the
limiting factor. We will eventually be able to scan the 6 x 17 and present
the user with the entire image. In actuality we will scan both portions and
stitch. Stiching in one direction is not that difficult, just time and a lot
of data to move around.
By the way the sensor and light source are fixed, it is the carriage that
moves.
David

> -----Original Message-----
> From: Op's [mailto:martin@wollongong.apana.org.au]
> Sent: Tuesday, August 21, 2001 9:29 AM
> To: filmscanners@halftone.co.uk
> Subject: Re: filmscanners: Re: Polaroid SS120 Scan Size
> 
> 
> Thanks Michael
> 
> thats the first answer to address the mechanics of the 
> scanners - two motors and
> thats why.
> 
> rob
> 
> 
> >  One motor apparently moves the slide or negative into
> > position and another one moves the sensors.
> 
> > > >
> > > > >From looking at there 4000 the mechanics will allow long scans
> > > which I
> > > > assume
> > > > that the SS120 is the same.
> > > >
> > > > Can this be made to scan 6x17 or is there any intention 
> by Polaroid
> > > to allow
> > > > scans longer than 9cm. ( Is there inherent problems 
> scanning longer
> > > > material) or
> > > > are there restrictions within the scanner?
> > > >
>