You know..you ought to do this... do a test print.. take a smaller size ..normal photo size print..and then check. My printer chap normally does test prints..all on their cost.. they lighten/ darken it once they see the print..as printers vary. What you see on a comp varies from what the printer machine gives.. rule of thumb. If you need to do prints.. really professionally..go to a photo studio..ask for a test print..normally not charged..or at nominal cost.. and then you either do it yourself..or get them to do it on their comp.They won't mind doing it..esp if you go to one where professionals hang out. (I love New Lab in San Fransisco for this..and the one I go to in Bombay.) You get excellence..at a price worth it.