[sane-devel] xsane support of 16-bit grayscale scanner output

[Oliver Rauch]

XSane does get this information from the backend.

May be you have to select an option (Scanmode or in standard or advanced
options window) to tell the backend to use 16bits/sample. May be the
scanner does not support 16 bit output, only uses 16 bit internal and
outputs 8 bits/sample.

Oliver

Am Mit, 2005-09-07 um 05.52 schrieb Dale Braden:
> I have an Epson 2580 scanner, which is capable of 16-bit output for each 
> channel, including what it calls monochrome.  I'd like to use xsane to 
> preview the old black-and-white photographs that I have, and to set the 
> tone levels appropriately for each photograph, and then acquire the scan 
> with 16-bit depth.  I understand that xsane's preview mode is 8-bit 
> only, and that is fine.  But it isn't clear to me whether xsane can 
> actually receive 16-bit data from this scanner, because if I click on 
> File->Info, I see that the scanner output depth is 8-bit.  Where does 
> xsane get this information, and how can I change it?  Is this a 
> limitation of the snapscan backend?  I do not have the preference set 
> for reduction of 16-bit to 8-bit on output.
> 
> Dale
>