On 10/05/12 01:43, Olaf Meeuwissen wrote: > > You may get improved results with Image Scan! for Linux when selecting > Color Document (or B/W Document) for the Image Type. > > This white correction is not done by the device. It is all done in a > non-free software component used by the iscan frontend. The Image Type > setting influences this image processing, but may still not be able to > arrive at the desired result. Your only option remaining (within the > scope of iscan) is fiddling with the Tone Correction settings. > > # That non-free software component has not been updated for ages. The > # Windows driver however has seen additions and improvements in that > # area, hence the whiter backgrounds. > > Hope this clarifies, Thanks for the explanation, Olaf.
As you say, when using Image Scan! for Linux, then 'Document' setting does produce a slightly lighter 'white' than the 'Photo' setting, but not very significantly, and not enough. What I do now with iscan, without bothering to check carefully, is to always make the same Tone correction, actually in the black rather than colour tabs & this gives a 'near enough' result for general use - see link: http://s838.photobucket.com/albums/zz309/2CV67/?action=view¤t=correction.png If iscan would just remember my settings, that would be the end of the story, at least for iscan... I assume from your explanation that nothing is going to make this white correction automatically for me, in any app, but is there nowhere in the whole chain of events I can make a once & for all manual adjustment? Thanks for your patience ( as well as expertise, of course)! 2CV67
