[sane-devel] Benq 5150C / 5250C users: please test

Brendan Macmillan melbourne.research at gmail.com
Fri Apr 30 15:54:38 UTC 2010

Hi Oliver,

I'm replying to the below 2006 message, to confirm that the factor of
two problem is present in the latest version. Here's a link to it in
the archive: http://lists.alioth.debian.org/pipermail/sane-devel/2006-January/015908.html

I had a look at the source code and found the calibration code for
5150 and 5250, but I don't understand it.

It would be great to be able to use my 5250C scanner with linux -
google also turned up a few other users with the same problem, on
ubuntu and other forums.

many thanks!

>[sane-devel] Benq 5150C / 5250C users: please test
>Oliver Schwartz Oliver.Schwartz at gmx.de
>Mon Jan 9 23:24:13 UTC 2006
>> Ok, I did some testing with my BenQ 5150C.
>> My first try was in 300dpi color mode (because this was default).
>> There are no color stripes anymore. However, the scanned area was
>> not very wide. Although the full available range
>> ((0,0)x(216.0,297.0)mm^2) was selected in xscanimage. The resulting
>> image had only 109 mm in width and approx. 145 mm in height
>> (measured with millimetre graph paper)
>> This is independent of selected resolution and colour mode.
>Looks like the measurements are off by a factor of 2. That should be
>easy to fix.

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