I noticed some strange behavior while scanning with a Nikon Super Cool Scan scanner and SilverFast. In order to get the most info I scanned with
16 bits per channel and set file output to jpeg2000 and "100% quality". This seemed to be a good compromise in file size between lossless and smaller jpg-files.
Unfortunately, after a while the jpeg2000 converter (?) seems to introduce errors and writes faulty picture info to the file. The first half (or
two thirds) of the bottom of the scanned image are fine. The last part is a combination of very blurred to blurred areas making up the image.
Since I have already scanned in a lot of pictures I am "not amused".
Here the pic of the downstripped selection of the original picture converted to 8 bits per channel and saved in jpg to save bandwith.
Nikon Scan does not show this effect. But then, it can't save jpf-files.
Any hints as to what causes the problem ?
Any workarounds to save the images other than rescanning the whole lot?
Might this be an encoding kind of problem such that the "real" info is
present in the file but the viewers (photoshop, ImageMagick, ...) just can't read the file correctly.
Thanks
Curious

