[Preacherman]

Hi Rick. I trust you found dcclark's answer above helpful. Don't forget that this is the Digital Photography "SCHOOL". Just click on 'About DPS' at the top of the screen, then on 'Photography Tips & Tutorials', then on 'For beginners'. Then go down to the topic in question and hey presto, it's all there. Enjoy your read and just come back if you need to. Keep on clicking and posting. God bless for now. PAUL