Why Should I Add 600 DPI Scanning?
The quick answer is that higher resolutions lead to better scans for reproducing your images. 600 DPI scans produce much larger files but help ensure every detail in your print is recorded in digital form. If you want to be sure as much detail as possible is captured during scanning, add 600 DPI scanning (for an average 2,000 scan order, you are getting 600 DPI scans for under 14¢ per scan). If you want files that are easier to work with, 300 DPI scans would be a better choice.
600 DPI Scans Allow for Double the Enlargement
Part of the benefit of scanning your old photos, in addition to the added security of backing them up in a digital format, is the ability to create new prints, enlargements and photo products such as photo books. The quality and size of the prints you will be able to reproduce will depend upon both the quality of the original photo and the resolution the photo is scanned at. See the charts below for a guide comparing original print size, resolution and reproduction size. Scanning at a higher DPI will give you more options for reprints and copies to be passed down to future generations.