----- Original Message -----
From: "photoscientia" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, December 10, 2000 1:40 PM
Subject: Re: filmscanners: RE: Film Scanners and what they see.
>
> > > It wouldn't take much to combine an area of 4 samples into one,
> > > using a true RMS algorithm. This would mean that the scanner
> > > would output only 5,000 dpi, but the brightness level could be
> > > much more accurately represented than simple area integration allows.
> >
> > Unfortunately, the hardware would probably be beyond affordability for
> > most of us. :(
>
> I don't see why. Those 10K (and 14.4k) pixel sensors are being used in
mid-price
> flatbeds all over the place. The pixel combining would be done by the host
computer.
Are those CCDs good enough for film?
Another approach would be taking two proven 4000 dpi CCDs from a unit like the
Polaroid and doubling them up into a staggered array. The 1/4000 inch element
size coupled with 8000 dpi offset sampling could provide a nice anti-aliased
4000 dpi output. And provide better Dynamic Range than one element used
alone.
Epson went from single 600/800 dpi arrays to dual offset 600/800 dpi arrays
with their latest flatbeds and the price went DOWN (not up). So it can't be
that hard... Epson used to sell film scanners...maybe its time they got back
into the market.
Byron
