Photographs by Bloomberg; Getty ImagesSome other noteworthy innovations that utilize just a single button

The Want: An advanced, eye-catching, and user-friendly camera for the experimental chronicler and wannabe Cartier-Bresson who has no idea how to set an F-stop.
 
The Get: The Lytro camera is a pocket-size digital marvel: It uses a unique “light field technology” to create elastic photographs—images that can be edited afterward to alter the focus and perspective and even make a two-dimensional picture 3D. In a masterstroke of Jobsian simplicity, the Lytro has only one button. At long last, a camera that’s truly as simple as “point and shoot.” ($399 for 8 GB or $499 for 16 GB, www.lytro.com)