[sane-devel] Poor quality with Plustek OpticBook 3600 and XSane 0.998

[Jens Herrmann]

Hello,
I found today that there is a huge difference in quality between the 
original vendor software (Windows) and XSane (Ubuntu) for the Plustek 
OpticBook 3600. While the first one looks quite well the second is 
barely readable.

Take a look at
http://img5.fotos-hochladen.net/uploads/examplescanbwlri1gw0dp5.png
for the scan black/white.

and at
http://img5.fotos-hochladen.net/uploads/examplescangr1hu8el7vzd.png
for the scan grey.

(all scans with brightness 0, contrast 0 and gamma 0)

Is this a known issue? Any comments?

Regards
Jens