John, the Apple Genius, led the walk after some iPhone camera instruction in the store. The theme of the the day was light and shadows. I have held iPhone classes myself but you're never too old to learn something new. John reminded us of the great exposure options in the iPhone camera, using filters before shooting and some of the great editing options. On Apple.com there are numerous short videos that give the highlights of iPhone photography to improve your images. Follow the Apple videos links to see some of the iPhone camera operation tips.