What is Descreen? I found this option in the scanner software. What if i select Descreen? How the photo will be scanned if i select "Descreen" and "NoDescreen"? Which one should I use while scanning the photo? either "Descreen" or "NoDescree"?
I think it has to do with reducing or removing moire pattern.
If you scan in a photo from magazine using a high dpi, you should see moire pattern. You know, funny little offset pattern of colours from the printing process.
Just a heads-up, I tried scanning and saving as
PDF - text over image and
PDF - image over text.
I'm scanning in sheet music from a playbook so that I can reprint and place the prints in plastic page protectors in a 3 ring binder, thus saving my original songbook, which will otherwise be ripped to shreds by an accompanist during performance.
When I tried PDF - text over image, the guitar chords turned into big black dots. They were perfectly shaped, but hardly what I needed.
When I tried PDF - image over text, the guitar chords were rendered perfectly.