SilverFast V 6.5.5r5 with Multi-Exposure Enhanced
Dear SilverFast User,
please note that with SilverFast Multi-Exposure 6.5.5r5 numerous enhancements have been done during the last months. But due to the complex function of MEX it must be understood that the auto-alignment cannot function properly when the scanner ist not delivering enough precision at high 100% resolution.
As a rule of thumb no more than 75% of the maximum optical resolution should be used for reliable and good image quality results.
Please also read the comments from my senior developer Nils Heidorn below!
President & CEO
LaserSoft Imaging AG
PS. Some insight into the subject of optical resolution: http://www.smirnov.sp.ru/scanner/scan02.html
a colleague of mine *is* working on improving the results for those of you that get unsatisfying scans at higher res.
So be assured that we finally were able to recreate your problems on some scanners and that we are working on it.
To our current knowledge there are 3 principal sources for problems:
-1- very blurry or pastel tone images that simply do not show enough contrasts / edges to properly realign the scans ( we are working on wider edge comparison )
-2- Scanners in a vibrating / unstable environment and / or films that are not fixed on the flatbed or in the holder --> this is something you can optimize ( taping films / books on scanner / etc. ). Obiously these scans will also benefit form better alignment routines ( see -1- and -3- ) but better work against the shifted images from the beginning...
-3- Scanners that ( surprisingly for us ) do not only misalign in vertical ( scan direction ) but also horizontal direction, we will implement full 2d alignment in the near future...
Nils Heidorn, R & D, LaserSoft Imaging AG
flatbed scanners for Epson
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