Here is a second video showing the descreening options in the Epson Scan software.
Below is a scanned image of material that was offset printed. (scan from a magazine) without using the Descreening feature. It displays obvious moire patterns that become even more apparent on printed material. The Descreeneing feature should never be used on actual photographs or film.
![](http://1.bp.blogspot.com/_McsukdAAso8/S7ETbJwVmwI/AAAAAAAAAH4/aWPA4zkR5os/s400/nondescreened.jpg)
Then next image was scanned using the Descreening feature and can be used for comparative analysis. Both photos are a cropped section of original image. The image below does not contain the sharpness in detail and seems a bit blurry, but it is also missing are the moire patterns.
![](http://2.bp.blogspot.com/_McsukdAAso8/S7EUD4fTTvI/AAAAAAAAAIA/DI9BClTkyVs/s400/descreened.jpg)