iPhone becomes a reliable light meter with Lumu Power [Review]


Lumu Power light meter
Is that an iPhone or a light meter? It's both.
Photo: David Pierini/Cult of Mac

Lumu Power light meter for iPhone

The iPhone democratized photography and disrupted the video and camera industry. Now a new product that plugs into the iPhone’s Lightning port aims to replace an important photographer’s tool — the handheld light meter.

The Lumu Power light meter is a small, plug-in photodiode that looks like a pingpong ball cut in half. The light meter, a product of Lumu Labs from Slovenia, rose out of a Kickstarter campaign in 2015. It’s won favorable reviews from photographers and photo websites as the company works to improve the companion app.

iPhone light meter will make your photos shine


Turn your iPhone into a trusted lighting assistant on photo shoots with the Luma Power.
Turn your iPhone into a trusted lighting assistant on photo shoots with the Luma Power.
Photo: Lumu Labs

A good photographer doesn’t say, I’ll fix it later in Photoshop. Lumu Labs understood this when they developed an accessory in 2013 that turns the iPhone into a light meter.

Though heralded by working photographers and tech journalists at the time, Lumu Labs wasn’t satisfied with the bulbous little device that hooks into the headphone jack. They continued to tinker and came up with the next generation of light meter that is like having a knowledgeable photo assistant in the palm of your hand.

Luxi, The Little Light Meter For the iPhone


The little Luxi turns your iPhone’s front camera into a light meter. A what? A light meter, a device that measures the amount of light falling on a subject so that you can set the exposure correctly on your camera.

But wait, doesn’t you camera already set its own exposure? Doesn’t it have a light meter built in for when i want to kick it old school in manual mode? Yes and yes, but this $30 widget might still be handy.

Luxi Turns Your iPhone Into An Old-School Light Meter [Kickstarter]



In the olden days, where getting the exposure of your photos right was much harder thanks to the fact that you didn’t get to see the result until your prints came back from the lab, people would sometimes rely on a separate incident light meter, which would measure the light falling on the subject, and not the light reflected by it.

Now, such a piece of hardware is being made for the iPhone…