Seize the light

Introducing Lumu Power

The light, exposure, flash and color temperature meter for iPhone.
Shipping in February 2017


One device. Power of many.

Pre-Order for 229$
Using the iPhone

One iOs App. Simple and intuitive.

Color temperature

Green and magenta compensation. Measure chromaticity as well.


See measurements in lux or fc.

Flash Exposure

See the flash output curve. Effective flash duration time. Flash vs. ambi ratio.

Spot metering

Uses iPhone's built in camera.

Lumu Power in the press

A good photographer doesn’t say,
I’ll fix it later

A next-gen attachment that doesn’t just meter light — it can measure and calculate flash and color temperature as well.

Lumu Power lets your iPhone double as a powerful light meter