[sane-devel] Reflecta ProScan 7200

m. allan noah kitno455 at gmail.com
Tue Apr 26 21:41:32 UTC 2011

On Tue, Apr 26, 2011 at 5:17 PM, Michael Rickmann <mrickma at gwdg.de> wrote:
> Hi Jan,
> Am 24.04.2011 00:58, schrieb Vleeshouwers, J.M.:
>> Hi Michael,
>> A short update on a couple of settings (mode normal/quality,
>> auto-exposure, auto-gamma, and ICE).
>> For details see:
>> http://www.stadspartijeindhoven.nl/jv/SettingsAnalysis.ods I'm not
>> completely ready with all settings yet, but If you
>> have suggestions for additional tests, let me know.
> Thanks a lot, I am constantly looking up things in your tables instead of
> doing test scans under Windows. I have been busy teaching the pie backend
> 16-bit colours and larger read sizes than a single line. That kept me busy,
> so I have not done much progress with regard to the interpretation of
> snoops. But from the practical point of view, I wonder whether GAMMA can be
> sent to the scanner or has to be handled by software - my native scans are
> far to dark - it nags - and a preset GAMMA of 2.2 as Windows-Silverfast uses
> would be just ideal. So far I have seen no indication that the Win progs
> send any related information over USB. And GAMMA as sent by the pie backend
> is not accepted by my scanner: IO-error.

extract the image data from a windows snoop, and see if it is dark too.

"The truth is an offense, but not a sin"

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