Microfiche scanning

[Jules Richardson]

On Thu, 2005-04-21 at 10:43 -0500, Jim Leonard wrote:
> Jim Leonard wrote:
> > Depends on the scanner.  Mine is optical 1200x2400 and cost $200, it 
> > handles fiche just fine.  I just put a white sheet of paper behind it 
> > before I start scanning.
> 
> CORRECTION:  Filmstrip, not microfiche.  My apologies.
> 
> So what *is* enough?  The last microfiche I read at my local library was 12 
> pages by 16 pages on a 4"x6" film

I think these DEC ones are 13 x 16 pages per fiche. I was assuming they
were A4 pages, but maybe they're one of the US formats (would make more
sense for DEC I suppose).

Doing some scribbling I think I came up with a 1200dpi scan being
equivalent to about 30-40dpi equivalent against a real-life A4 page -
given that I normally scan A4 sheets at 300dpi that'd require a scanner
capable of something around 9600dpi.

Maybe my calculations were off though :)