No doubt light meter can help you capture perfect photos when you use your SLR/DSLR camera, but if you use iPhone 5 or iPhone 4/4S, Luxi incident light meter adapter should be a nice solution.
Luxi is a practical, portable adapter designed to offer you an easy to convert your iPhone 5 or iPhone 4/4S into an incident light meter. As we can see from the images, the iPhone adapter features ultra compact design for portability, and similar with normal incident light meter, the adapter also comes with an integrated diffusion dome. When attached on your iPhone, the dome fits securely over the iPhone’s front-facing camera, while its custom designed light meter app will clearly show you the best settings for your SLR or DSLR camera just like using a professional incident light meter.
At present the inventor of Luxi is raising fund at Kickstarter. Pledging $19 will let you own the light meter adapter. If you’re interested, jump to Kickstarter official site for more details.