Your print photos are scanned using a professional flatbed scanner.  Start by deciding how large you want to be able to print your pictures.  Most printers require 300 dots per inch (DPI).  If you have a 4 by 6 inch picture and you want to be able to print only 4 by 6 pictures from that scan.  Choose 300 DPI.  If you want to be able to print that picture twice as large, choose 600 DPI.  If you want to print 4 times as large, choose 1200 DPI.  Please have an approximate number of photos and the DPI resolution that you want when you call for a price.