13 Sep
2001
13 Sep
'01
12:55 p.m.
Hi Tom,
I have a Bell&Howell 500FB 11x17 scanner with ADF that I a pretty
happy with. It'll do 400DPI native, and 600DPI interpolated, up
to 256 grayscale (no color). I've used it to scan a small number
of 11x17 schematics, and the results are reasonable, the main
problem is page skew. I've been working on a program to automatically
deskew pages (which works ok), and recenter the image in the page
(which doesn't). IIRC, I paid ~$1200US for it.
I also have a Microtek MRS-800AJ which is 11x17 color (i forget the
resolution) but flatbed only. This scanner is too slow to use for
any sort of document scanning. You will die of boredem waiting to
switch pages and start the next scan. I'm happy with the color
reproduction however. Lots cheaper, ~$600US.
Both are SCSI, which I consider to be a requirement because of the
amount of time required to transfer an image across USB. A zippy
machine to drive it (600MHZ/PIII) is also very desirable...
Clint
On Mon, 10 Sep 2001, Tom Uban wrote:
I started looking for an 11x17 scanner (also called A3
or tabloid, from what
I can gather). They are hard to find and I was wondering if you have
suggestions
for a quality flat bed scanner which can handle the larger format, but is not
to pricey. The ones which I have found also appear to be SCSI, is OK, but
would not be my first choice.
--tom
At 02:16 PM 9/10/01 -0700, you wrote:
This topic has gone over the list a few times,
from experience, the "best"
scans are 600 DPI black and white compressed into PDF files. This achieves
exactly what is needed, get the data without a lot of excess. The KA655 TM
that is on the DFWCUG site appears from the PDF to be 100 DPI/8 bit (note
that's 800 bits per inch net and the result is harder to read) I'll add
scanning this manual to my list. They don't appear to have come up with a
'standard' for their scans. That would help too.
--Chuck
At 01:01 PM 9/10/01, you wrote:
However,
someone decided to scan some of the manuals as low
resolution 8 bit grey scale (what a waste of someone's scanning time!)
Do you mean low or high resolution? There's no need for 48 or even 16
bit for anything not continuous tone. I got three manuals from DFWCUG
and am very happy with the quality. Perhaps they could look into more
efficient compression, though.
John A.