Photographers have used the iPhone in a lot of experimental ways to take better photos. I’ve seen people use the phone as a light panel, amongst other things. What I haven’t seen, at least until today, was a way to turn your iPhone into a light meter. The Luxi attachment, and app, turn your front facing camera on your iPhone into a light meter. It’s only going to cost you $29.95.

Pretty nifty little tool to have on hand when you’re heading out to a photo shoot.