[Gllug] OT Scanners
Chris Bell
chrisbell at overview.demon.co.uk
Tue Aug 13 22:46:47 UTC 2002
On Tue 13 Aug, will wrote:
>
> Hello all,
>
> I am going to buy a scanner so I can convert all my colour print photo's to an
> online photo album and to preserve them. I have looked on scan.co.uk and they
> have a few, but I am looking for recommendations on scanners that Gllug members
> might used and found to produce good results under Linux. I have a budget of
> about £150 and am looking for pretty good quality scans. The interface can be
> parallel, SCSI, USB or magic as long as it works with Linux (and preferably the
> Gimp). I have a SCSI card that I don't currently use that has an external
> connector about 30 x 5 mm and I think the chipset is 'NCR 53c801 (written on one
> of the chips) but I don;t know any more about it than that. Any suggestions?
>
If you have the choice, use a good quality film scanner rather than a
print scanner as a lot of quality is lost in the printing. The density range
on film should be at least 30:1, the normal 8 bit limit is 256:1, but a
print will stuggle to manage 9:1 because of flare and reflections. The
negative-and-print system also tends to use a low contrast film with high
contrast print, so that the input range that a well exposed film will handle
can be even higher. The normal printing process will then distort the
density curve much more than will a good electronic scanner, tending to
reduce the gain of the darkest and lightest areas but stretch the middle.
I have a Nikon Coolscan 1000 35mm scanner, Epson Perfection 1200S A4
flatbed, and Agfa StudioScan IIsi foolscap/oversize A4 with transparency
adaptor (full size top illuminator), all SCSI, so I have a choice of methods
for producing huge files.
--
Chris Bell
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