Lumu review: A clever and well designed light meter
for your phone | Olivier Duong

Conclusion

At the end of the day, the Lumu is a well designed and well thought of device. I used it for professional purposes, and will continue to do so, but I like it so much and it’s so useful while being so small, I’ll use it for many things, portraits, street, etc. If you have a compatible smartphone, I highly recommend the Lumu……..

Source: www.theinspiredeye.net