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. allan -- "The truth is an offense, but not a sin"
