21 Apr
2005
21 Apr
'05
9:11 a.m.
On Thu, 2005-04-21 at 10:43 -0500, Jim Leonard wrote:
Jim Leonard wrote:
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 :)
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