While reading about DOF, I came across this tutorial: http://www.trustedreviews.com/digit.../Digital-Photography-Tutorial-Focul-Length/p4 It states that "...due to the increased depth of field in the wide angle shot, the background, although apparently more distant, is much sharper." And has two pictures to prove it. However, this does not concur with every other tutorials that I have read. My explanation for the photos that he shows is because he decreased the aperture size (increase f number) in order to get the background in focus in the second shot. Who is right? EDIT: Clarified "decrease" aperture.