Photographers know that light is one of the most important aspects in taking great shots and many use a light meter to make sure they get most accurately exposed photo. The problem with this is that Light Meters are expensive and difficult to use and many times they may not be on you when you need it. Enter the Luxi Light Meter for the iPhone, a portable and easy to use device that clips onto the rear camera of your phone. When used with the free app, it can help you determine the best settings for your DSLR camera and is just as accurate as more expensive Light Meters available on the market. Accessories like this are what make the iPhone so versatile and for $19 this is something that any photographer, amateur or serious, should not pass up.