Hi,

I got it.
My Linux (Elementary OS Freya(based on Ubuntu 14.04)) uses Sane Backends 1.0.23. After installing Sane Backends 1.0.26 I can use brightness and contrast, and the scan quality is much better.
Thanks

Am 18.05.2016 um 01:50 schrieb Axel Schneider:
Hi,

I wrote a Sane GUI (OSX & Linux) for my HP ScanJet 2300C.
see http://goodoldsongs.jimdo.com/news/

The 2300C uses Sane genesys.
In OSX I can use brightness and contrast, in Linux I get "unrecognized option brightness".

Can anyone tell me why.

Greetings Axel



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