[sane-devel] Possible bug in canon backend or scanimage
m.kavatsyuk at yahoo.com
Thu Nov 4 13:57:05 UTC 2010
Just recently I bought CanoScan 2700F film scanner (SCSI, canon ackend).
It works fine with the xsane/xscanimage frontends. However, I have troubles to make it working with the scanimage frontend. Namely, I can not path some scanner-specific options (--af, --afonce, --highlight).
According to the manual this options are there:
>scanimage -d canon:/dev/sg2 -h
--highlight 0..255 
Selects what radiance level should be considered "white".
Enable/disable auto focus
Do auto focus only once between ejects
When I execute
>scanimage -d canon:/dev/sg2 --resolution 2720 --film-type Slides --highlight 150 > out.pnm
I get the error message:
> scanimage: unrecognised option --highlight
I have checked the source code of the canon backend and I can not see gross mistakes. Moreover I can control these options with the xsane GUI.
Please give me a hint where should I look to find a solution of the problem.
Thank you in advance,
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