Recent content by Josh T.

Glad to be able to provide some useful info. And thanks for the link. For the time being I'll probably keep photos centered to keep distortion minimized. But it may be interesting to so some experimenting with ImageMagick at some point down the road, probably scanning the same image...

After digging into the issue further a few days ago, it seems to be related to CCD scanners specifically, as opposed to CIS scanners, due to the particular use of a lens to transfer the image data to the CCD sensor. Related Links: CCD or CIS (web - by the WideTEK scanner folks) CIS vs. CCD (pdf...

I did some further experimentation with this scanner at 600dpi, and it appears that the distortion is progressive (as one would expect from lens distortion). Interestingly enough, the distortion appears non-centered on the platen and does not follow a symmetrical pattern across the width...

Are you still interested in researching this issue? I just purchased a Canoscan 9000F MkII a couple weeks ago and started doing a few experiments last week before I start scanning a bunch of old photos. After scanning the same images vertically and horizontally and flipping back and forth in a...