Rene Rebe schrieb: > litlle girl wrote: >> AFE settings looks more stable: >> >> grep "\[gt68xx\] afe" ./* >> ./color-1.log:[gt68xx] afe 0x0f 0x04 0x10 0x05 0x0f 0x04 >> ./color-2.log:[gt68xx] afe 0x0f 0x04 0x10 0x05 0x0f 0x04 >> ./color-3.log:[gt68xx] afe 0x0f 0x04 0x10 0x05 0x0f 0x04 >> ./gray-1.log:[gt68xx] afe 0x0f 0x04 0x10 0x05 0x0f 0x04 >> ./gray-2.log:[gt68xx] afe 0x0f 0x04 0x0f 0x04 0x0f 0x04 >> ./gray-3.log:[gt68xx] afe 0x0f 0x04 0x0f 0x04 0x0e 0x03 >> ./lineart-1.log:[gt68xx] afe 0x0f 0x04 0x0f 0x04 0x0e 0x03 >> ./lineart-2.log:[gt68xx] afe 0x0f 0x04 0x0f 0x04 0x0e 0x03 >> ./lineart-3.log:[gt68xx] afe 0x0f 0x04 0x0f 0x04 0x0f 0x04 > > Aside exposure and AFE the backend probably uploads a > scaling value for each image sensor element (white / dark > shading etc.?) that should be pretty constant. > > (And no, I still have not read the genesys backend source > to verify what it's doing, this is just from other > educated experience.)
I don't know what the gt68xx uses for calibration data, but the highly experimental genesys/calibration-cache code stores(in memory only) for each combination of color mode and resolution: * exposure time * AFE offset and gain * per pixel offset and gain(actually just the black/white levels, but the offset and gain are fully defined by those) > I bet the Windows driver also does not re-calibrate every > scan, at least the Mac driver for the Canon Lide 70 does > only calibrate once after unpacking. > > Yours, > Regards, Pierre
