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The Lumu iPhone Light Meter shows just how useful this smartphone has become for photographers. Whether it is snapping photos with it or using it as an additional tool for better shots, the iPhone is proving incredibly indispensable. Now it can help read the light conditions in a particular area so photographers capture the best image they can.

Essentially a plug-in, the Lumu iPhone Light Meter doesn't require a battery to function. Like an old-school camera bulb, it pokes unobtrusively from the top of the phone to read the intensity of light reflecting off the subject. Designed by Lumu Labs, which is located in Ljubljana, Slovenia, it is currently vying for funds on Kickstarter. It has surpassed its original $20,000 goal.