Comment Lens (Score 1) 172
I do the same but use the pages for references. Sometimes I up-load pages to EVERNOTE for searching on words, like indexing. THE ANSWER TO YOUR QUESTION IS THE LENS SHAPE. The lens is concave and gives you a sloping-up contrast on the edges. In a software program one will write a logarithm to flatten the lens. However, if you roll-up the page's sides before taking the picture it will work too.
