Instruct: Classify the given Amazon review into its appropriate rating category
Query: Don't buy if you plan on using for document scanning to PDF.

If you plan on using this to scan documents, expect to have to buy 3rd party PDF generator software. Photo and negative scans work well. The document scanning software that comes with it is nearly useless because it doesn't allow you to change the brightness/contrast or tone curves of black and white or grayscale scanning for PDF generation. This makes documents lose half the text to fading to whiteness. My 12 year old Canon scanner would allow you to set the grayscale parameters before PDF generation, so the new software is a step backwards.