What do you use to take pictures of your kids, your friends, your family, your vacation destinations? It's all but surely a digital camera of some kind --- and it might well be a "personal device" such as an iPhone, iPad, Android phone, Windows phone, or Blackberry. Photography --- like everything else nowadays connected with technology --- ain't what it used to be.... Our guest on ST is the British photographer Adam Bronkhorst, whose written several books on taking pictures, including the recently-published "SnApp Shots: How to Take Great Pictures with Smartphones and Apps" (Chronicle Books). It's an accessible guidebook, intended for both beginning and veteran shutterbugs, that sorts through the multitude of photography apps, demonstrating and clarifying the many different effects made possible by such apps. It's a how-to photography text for the twenty-first century, so to speak.